CN108534210B - Implementation method of stacked energy storage type heat pump heating system - Google Patents
Implementation method of stacked energy storage type heat pump heating system Download PDFInfo
- Publication number
- CN108534210B CN108534210B CN201810612173.7A CN201810612173A CN108534210B CN 108534210 B CN108534210 B CN 108534210B CN 201810612173 A CN201810612173 A CN 201810612173A CN 108534210 B CN108534210 B CN 108534210B
- Authority
- CN
- China
- Prior art keywords
- heat
- electric
- user
- valve
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 49
- 238000010438 heat treatment Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 200
- 238000005338 heat storage Methods 0.000 claims abstract description 57
- 230000001502 supplementing effect Effects 0.000 claims abstract description 14
- 230000002411 adverse Effects 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 15
- 238000009825 accumulation Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 13
- 238000013461 design Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 4
- 239000011232 storage material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000004069 differentiation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Central Heating Systems (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a stacked energy-storage type heat pump heating system, which comprises an A heat source assembly (1), a B heat source assembly (2), a circulating pump group (3), a heat storage tank (4), a full-automatic water supplementing module (6) and a user end, wherein the user end comprises a user water supply end (13) and a user water return end (14), the inlet end of the B heat source assembly (2) is connected with the outlet end of the circulating pump group (3), and the outlet end of the B heat source assembly is connected with the inlet end of the A heat source assembly (1) and the user water supply end (13); the inlet end of the heat source module A (1) is connected with the user water supply end (13), and the outlet end is connected with the inlet end of the heat storage tank (4); the inlet end of the heat storage tank (4) is connected with the outlet end of the circulating pump set (3), and the outlet end of the heat storage tank is connected with the user water supply end and the user water return end. The invention has the beneficial effects that: a group of circulating pump sets (3) is adopted to solve the system circulation problem, and a two-stage heat pump mode of the heat source module A (1) and the heat source module B (2) is adopted to overcome the adverse factors of one-stage heating, so that heat can be well supplied in extremely cold climates.
Description
Technical Field
The invention belongs to the technical field of heat supply engineering, and particularly relates to a stacked energy storage type heat pump heat supply system.
Background
At present, the urban scale is rapidly increased, and the heating area is enlarged year by year. The country is actively advancing the implementation of the policy of changing coal into electricity for reducing air pollution caused by heat supply. Heat pump technology has been dominant as a representative of clean energy in heat supply to reduce environmental pollution caused by primary energy heat supply. In the design of the heat pump heating system of the urban district at present, the electricity storage equipment is operated to supply heat and store heat in the power supply valley period by using the valley electricity storage clean energy. Heat release during peak power supply, peak and the like is beneficial to reducing running cost and power distribution capacity, and an energy storage heat pump system is a current main heat supply mode.
In the existing energy storage type air source heat pump system, an energy storage pump and an energy release pump are generally arranged in a system design respectively and independently, the energy storage pump is connected with a heat source device and an energy storage tank, and the energy release pump is connected with the energy storage tank and a user side. The energy storage and heat supply system of the conventional system is generally divided into valley price electricity, peak price electricity, flat price electricity and other operation modes:
(1) The heat supply is in the 'valley electricity' period, the system enters a heat storage mode, the communication valve of the heat source equipment and the energy storage tank is opened, the communication valve of the heat source equipment and the user side is closed, the heat water circulation of the heat source equipment and the energy storage tank is carried out through the energy storage pump, and an energy storage process is completed.
(2) The heat supply is in the period of 'low price electricity', the system enters a direct heat supply mode, the communication valve of the heat source equipment and the user side is opened, the communication valve of the heat source equipment and the energy storage tank is closed, the heat source equipment and the user side are subjected to hot water circulation through the energy release pump, and a direct heat supply process is completed.
(3) The heat supply is in the period of 'peak electricity price', the system enters into a heat release mode, the communication valve between the energy storage tank and the user side is opened, the communication valve between the heat source equipment and the energy storage tank is closed, and the heat source equipment and the energy storage tank are subjected to hot water circulation through the energy release pump, so that a heat release and heat supply process is completed.
The energy storage type air source heat pump system has the following defects:
(a) The conventional energy storage type cold and heat supply system is characterized in that an energy release pump and an energy storage pump are designed in a distinguishing mode, the energy storage pump and the energy release pump are respectively configured according to different design working conditions, and the switching of heat storage and heat release is realized by starting and stopping a pump set between the energy release pump and the energy storage pump.
Because the power of the energy storage pump and the energy release pump of the energy station in the social heat supply project is usually about 22KW-90KW, the frequent start-stop switching of the high-power equipment can frequently generate large start-up current, so that the safety of the water pump relay is reduced under the frequent switching operation.
(b) In the original system, the heat pump adopts a single-stage heat increasing mode, so that the efficiency of a unit system is reduced along with the reduction of the temperature of weather, the water supply temperature is reduced along with the reduction of the system efficiency, and the reduction of the temperature of hot water is difficult to reach the phase change temperature point of an energy storage material, so that the condition that heat cannot be stored is caused.
Disclosure of Invention
The invention aims to provide a superposition type energy storage heat pump heating system, which adopts a two-stage heat pump mode to overcome the adverse factors of one-stage heating, and adopts a combination design of an energy storage pump and an energy release pump to solve the system circulation problem.
The utility model provides a stack formula energy storage heat pump heating system, includes B heat source module 1, A heat source module 2, circulating pump group 3, heat accumulation jar 4, full-automatic moisturizing module 6 and user's end, the user's end include user water supply end 13 and user return water end 14, the entrance point of A heat source module 2 and circulating pump group 3 exit end connect, its exit end and B heat source module 1's entrance point, user water supply end 13 homogeneous phase connect; the inlet end of the heat source module B1 is connected with a user water supply end 13, and the outlet end of the heat source module B is connected with the inlet end of the heat storage tank 4; the inlet end of the heat storage tank 4 is connected with the outlet end of the circulating pump set 3, and the outlet end of the heat storage tank is connected with the user water supply end 13 and the user water return end 14; the water supply system comprises an inlet end of a circulating pump set 3, a full-automatic water supplementing module 6 and a user end, wherein the user end comprises a user water supply end 13, an outlet end of a user water return end 14 and a user water return end 14 which are connected; the outlet end of the full-automatic water supplementing module 6 is connected with the user water return end 14.
Further, the outlet end of the heat source module A2 is connected with the inlet end of the heat source module B1 and the user water supply end 13 through an electric three-way valve VT 18.
Further, the outlet end of the heat storage tank 4 is connected with the user water supply end 13 and the user backwater end 14 through an electric three-way valve VT 29.
Further, the heat storage device also comprises an auxiliary electric heater 5, wherein the auxiliary electric heater 5 is arranged on a connecting pipeline between the outlet end of the heat source module A and the inlet end of the heat storage tank 4.
Further, the outlet end of the circulating pump group 3 is communicated with a connecting pipeline of the heat storage tank 4 and the auxiliary electric heater 5 through an electric valve V110, and the communicating point is a.
Further, an electrically operated valve V312 is provided in the connection line between the heat storage tank 4 and the communication point a.
Further, the connection line of the electric valve V3 and the communication point a communicates with the connection line of the heat storage tank 4 and the electric three-way valve VT18 through the electric valve V2.
Further, the intelligent module 7 is further included, and the intelligent module is connected with the user backwater end 14, the electric three-way valve VT18, the electric three-way valve VT29, the electric valve V110, the electric valve V211 and the electric valve V3.
Further, the circulating pump set 3 is a variable-frequency water pump set, and the full-automatic water supplementing module 6 is a full-automatic water dispenser.
Further, each of the B heat source block 1 and the a heat source block 2 includes a plurality of air source heat pumps.
The beneficial effects of the invention are as follows:
(1) The energy storage pump and the energy release pump in the energy storage type air source heat pump system are combined and designed into the circulating pump set 3, so that the system circulation problem is solved.
(2) The circulating pump set 3 adopts a variable-frequency water pump set, can be adjusted by utilizing the motor frequency according to different operation conditions of an energy storage side and an energy release side, and always enables the variable-frequency pump to work under different operation conditions so as to meet the operation requirements under different operation conditions; the circulating pump set 3 adopts a frequency conversion design, so that the starting current of the circulating pump set 3 during starting is reduced, and the safe operation of a cable distribution line and a power distribution element is protected; the release pump and the energy storage pump are integrated, so that the investment cost of projects is reduced by using the circulating pump set 3, meanwhile, the differentiation of the release pump and the energy storage pump is reduced, and the maintenance of the circulating pump set 3 is easy.
(3) Adopting a two-stage heat pump mode of the B heat source module 1 and the A heat source module 2, and fully avoiding the condition that the hot water temperature of the 1-stage heat pump is not up to the standard due to weather; the water outlet temperature can be guaranteed in extremely cold weather, and the safety of the system is enhanced; the heat pump can not meet the phase change temperature requirement of the energy storage material when the temperature is reduced in winter.
(4) The intelligent module 7 not only can control the working frequency of the motor of the circulating pump set 3 according to the temperature difference between the user water supply end 13 and the user water return end 14; the working efficiency of the motor of the circulating pump set 3 can be controlled according to different states of heat supply and heat storage of the system, so that the water supply amount reaches a required value; and the switching conditions of the electric three-way valve VT1, the electric three-way valve VT2, the electric valve V1, the electric valve V2 and the electric valve V3 can be controlled to switch heat supply and heat storage according to the valley electricity and peak electricity time periods.
(5) When the direct heat supply is performed, the intelligent module 7 controls the working efficiency of the motor of the circulating pump set 3 according to the temperature difference relation between water supply and backwater, the water supply temperature is X, when the backwater temperature is Y, and the difference value between X and Y reaches a certain threshold value, the heat source modules A2 and B1 start to increase the machine, and the circulating pump set 3 starts to increase the frequency along with the increase of the number of air source heat pumps of the heat source modules A2 and B1; along with the rise of the return water temperature, the heat required by the user water supply end 13 is reduced, the number of the air source heat pumps of the A heat source module 2 and the B heat source module 1 is reduced, and the circulating pump set 3 performs the frequency-reducing operation.
(6) During energy storage, the intelligent module 7 controls the frequency of the water pump required by the circulating pump group 3 according to the water flow required by the heat supply quantity generated by the circulating pump 3 participating in energy storage and the water resistance between the heat source module A2 and the heat source module B1 and the energy storage tank to be overcome.
(7) During energy release, the intelligent module 7 controls the frequency of the water pump required by the circulating pump group 3 according to the water flow required by the heat pump participating in energy release to generate heat supply and the water resistance between the heat source module A2, the heat source module B1 and the user water supply end 13.
(8) The intelligent module 7 can also control the opening of the electric three-way valve VT29 according to the pressure difference between the user water supply end 13 and the user water return end 14 so that the temperature difference between the user water supply end 13 and the user water return end 14 can operate within a preset range.
(9) When the heat source modules A and B2 and 1 cannot meet the heat supply condition, the auxiliary electric heater valve (not shown) is manually switched to start the auxiliary electric heater.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
in the figure: b heat source block; a heat source block; 3. a circulating pump group; 4. a heat storage tank; 5. an auxiliary electric heater; 6. a full-automatic water supplementing module; 7. an intelligent module; 8. an electric three-way valve VT1;9. an electric three-way valve VT2;10. an electric valve V1;11. an electric valve V2;12. an electric valve V3;13. a user water supply end; 14. a user backwater end; 15. an emergency valve; the dotted line is a water return line, and the solid line is a water supply line.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a stacked energy-storage heat pump heating system comprises a heat source module 1, a heat source module 2, a circulating pump group 3, a heat storage tank 4, a full-automatic water supplementing module 6 and a user side, wherein the user side comprises a user water supply end 13 and a user water return end 14; the inlet end of the heat source module A2 is connected with the outlet end of the circulating pump set 3, and the outlet end of the heat source module A is connected with the inlet end of the heat source module B1 and the user water supply end 13; the inlet end of the heat source module B1 is connected with a user water supply end 13, and the outlet end of the heat source module B is connected with the inlet end of the heat storage tank 4; the inlet end of the heat storage tank 4 is connected with the outlet end of the circulating pump set 3, and the outlet end of the heat storage tank is connected with the user water supply end 13 and the user water return end 14; the water supply system comprises an inlet end of a circulating pump set 3, a full-automatic water supplementing module 6 and a user end, wherein the user end comprises a user water supply end 13, an outlet end of a user water return end 14 and a user water return end 14 which are connected; the outlet end of the full-automatic water supplementing module 6 is connected with the user water return end 14.
When directly supplying heat, water is pressurized by the circulating pump group 3 and then directly supplies heat to the water supply end of the user side by the air source heat pumps of the heat source modules B1 and A2.
During heat storage, water is pressurized by the circulating pump set 3, and then the heat storage tank is subjected to heat storage through the heat source module B1 and the heat source module A2.
When releasing heat, the water in the heat storage tank releases heat to the water supply end of the user end.
The beneficial effects of this embodiment are:
(1) The energy storage pump and the energy release pump in the energy storage type air source heat pump system are combined and designed into the circulating pump set 3, so that the system circulation problem is solved.
(2) Adopting a two-stage heat pump mode of the B heat source module 1 and the A heat source module 2, and fully avoiding the condition that the hot water temperature of the 1-stage heat pump is not up to the standard due to weather; the water outlet temperature can be guaranteed in extremely cold weather, and the safety of the system is enhanced; the heat pump can not meet the phase change temperature requirement of the energy storage material when the temperature is reduced in winter.
As a preferred embodiment of the above embodiment, the outlet end of the heat source module a 2 is connected to the inlet end of the heat source module B1 and the user water supply end 13 through the electric three-way valve VT 18. The electric three-way valve VT18 has two flow directions, namely B-A, B-C, one part of water heated by the first stage of the heat source module A2 flows to the user water supply end 13 through the B-C of the electric three-way valve VT18, and the other part flows to the heat source module B1 through the B-A of the electric three-way valve VT 18.
The B-C branch of the electric three-way valve VT18 can be connected with the emergency valve 15 in parallel, the B-A branch of the electric three-way valve VT18 can be connected with the emergency valve 15 in parallel, the emergency valve 15 can be started when the B-C branch and/or the B-A branch of the electric three-way valve VT18 cannot work, and water can enter the inlet end of the B heat source module 1 and/or the user water supply end 13 through the branch of the emergency valve 15.
As a preferred embodiment of the above embodiment, the outlet end of the heat storage tank 4 is connected to the user water supply end 13 and the user water return end 14 through an electric three-way valve VT 29. The electric three-way valve VT29 has two flow directions, namely E-F, E-D respectively, and water flowing from the electric three-way valve VT18 and water flowing from the heat storage tank 4 partially flow to the user water supply end 13 through E-F and partially flow to the user water return end 14 through E-D.
The E, F branch of the electric three-way valve VT29 can be connected with the emergency valve 15 in parallel, the E, D branch of the electric three-way valve VT29 can be connected with the emergency valve 15 in parallel, and when the electric three-way valve VT29E-F branch and/or the E-D branch cannot work, the emergency valve 15 can be started, so that water energy can enter the user water supply end 13 and/or the user water return end 14 through the branch of the emergency valve 15.
As a preferred embodiment of the above embodiment, the heat storage device further comprises an auxiliary electric heater 5, wherein the auxiliary electric heater 5 is arranged on a connecting pipeline between the outlet end of the heat source module A2 and the inlet end of the heat storage tank 4. Advantageous effects of the preferred embodiment: in case the two-stage heat pump of the heat source module A2 and the heat source module B1 can not meet the phase change temperature requirement of the energy storage material in the case of extremely cold weather, the auxiliary electric heater (5) can be started by manually switching the valve (not shown) of the auxiliary electric heater (5), the water outlet temperature can be ensured in extremely cold weather, and the safety of the system is enhanced.
As a preferred embodiment of the above embodiment, the outlet end of the circulating pump set 3 is connected to the connection pipeline of the heat storage tank 4 and the auxiliary electric heater 5 through the electric valve V110, and the connection point is a. When the electric valve V110 is opened during heat release, the circulation pump group 3 pressurizes the heat storage tank 4 through the opened electric valve V110, and water in the heat storage tank 4 flows to the user water supply end 13 through the electric three-way valve VT 29.
As a preferred embodiment of the above embodiment, the connection line of the heat storage tank 4 and the communication point a is provided with an electric valve V3 12. When the electric valve V3 is opened during heat accumulation, hot water flows through the electric valve V3 to be stored in the heat accumulation tank 4 through heating, when the electric valves V110 and V312 are opened during heat accumulation, the circulation pump group 3 pressurizes the heat accumulation tank 4 through the opened electric valves V110 and V312, and water of the heat accumulation tank 4 flows to the user water supply end 13 through the electric three-way valve VT 29.
As a preferred embodiment of the above embodiment, the connection line of the electric valve V3 and the communication point a communicates the connection line of the heat storage tank 4 and the electric three-way valve VT18 through the electric valve V2. The hot water from the outlet of the B heat source block 1 flows to the user water supply end 13 through the electric valve V2 when directly supplying heat.
As the preferred embodiment of the above embodiment, the circulating pump set 3 is a variable-frequency water pump set, and the fully-automatic water supplementing module 6 may be a fully-automatic water dispenser or another device capable of realizing automatic water supplementing. Advantageous effects of the preferred embodiment: the circulating pump set 3 adopts a variable-frequency water pump set, can be adjusted by utilizing the motor frequency according to different operation conditions of an energy storage side and an energy release side, and always enables the variable-frequency pump to work under different operation conditions so as to meet the operation requirements under different operation conditions; the circulating pump set 3 adopts a frequency conversion design, so that the starting current of the circulating pump set 3 during starting is reduced, and the safe operation of a cable distribution line and a power distribution element is protected; the release pump and the energy storage pump are integrated, so that the investment cost of projects is reduced by using the circulating pump set 3, meanwhile, the differentiation of the release pump and the energy storage pump is reduced, and the maintenance of the circulating pump set 3 is easy. The operation of the preferred embodiment will be described by direct heat supply, heat storage, severe weather conditions, etc.
As a preferred embodiment of the above-described embodiments, each of the B heat source block 1 and the a heat source block 2 includes a plurality of air source heat pumps. The air source heat pump has the advantages of wide application range, low operation cost, no pollution, stable performance and small occupied space.
The preferred embodiment works as follows:
(I) Direct heat supply: the water is pressurized by the circulating pump group 3 and then heated by the heat source modules B1 and A2, and is split in the directions A-B/B-C after being split by the electric three-way valve VT18, at the moment, the opening of the directions is A-B5%, B-C95%, the electric valves V1 and V2 are closed, and the electric valve V3 is opened to control the EF opening of the electric three-way valve VT2 according to the pressure difference of the user side; in extreme weather and cold weather, the air source heat pumps of the heat source modules A and B2 and 1 directly supply heat. The opening A-B70%, B-C30% of the electric three-way valve VT18, the electric valve V110 and the electric valve V312 are closed, the electric valve V211 is opened, and the EF opening of the electric three-way valve VT29 is controlled according to the temperature difference between the user water supply end 13 and the user water return end 14, so that the auxiliary electric heater valve (not shown) is manually switched to enable the auxiliary electric heater under the condition that the air source heat pump of the heat source modules A2 and B1 can not meet the heat supply.
(II) heat storage: the water is pressurized by the circulating pump group 3 and then heated by the heat source module A2, and is split along the directions A-B/B-C after being split by the electric three-way valve VT18, at the moment, the opening A-B70% and the opening B-C30% of the electric three-way valve VT18, the electric valve V110 and the electric valve V211 are closed, the electric valve V312 is opened, the opening of the electric three-way valve VT29 is controlled according to the backwater temperature of the backwater end 14 of a user, and when the water temperature entering the heat storage tank does not reach the heat storage temperature, the auxiliary electric heater valve (not shown) is manually switched to enable the auxiliary electric heater.
(III) exothermic: the water is pressurized by the circulating pump set 3 and then heated by the heat source module A2, and is split in the directions A-B/B-C after being split by the electric three-way valve VT18, at the moment, the opening A-B95% and the opening B-C5% of the electric three-way valve VT18 are achieved, the electric valve V211 is closed, the electric valves V312 and V110 are opened, and the opening E-F100% and the opening E-D0% of the electric three-way valve VT29 are achieved.
The opening degrees of the electric three-way valves VT18 and VT29 are only exemplary, the opening ranges are selected according to the needs, and the specific opening ranges are adjusted according to the relations between users and heat sources under different operation conditions.
As the preferred embodiment of the embodiment, the intelligent module 7 is further included, and the intelligent module is connected with the user backwater end 14, the electric three-way valve VT18, the electric three-way valve VT29, the electric valve V110, the electric valve V211 and the electric valve V3.
The electric three-way valve VT18 includes two directions AB/BC, and the electric three-way valve VT29 includes two directions EF/ED.
The preferred embodiment works as follows:
(1) when the direct heat supply is performed, the intelligent module 7 controls the working efficiency of the motor according to the temperature difference relation between water supply and water return, if the water supply temperature is X, when the water return temperature is Y, the difference value between X and Y exceeds a threshold value, the heat supply of the user water supply end 13 is insufficient, the B heat source module 1 and the A heat source module 2 start to increase the machine, and the circulating pump group 3 starts to increase the frequency along with the increase of the number of air source heat pumps of the B heat source module 1 and the A heat source module 2; along with the rise of the return water temperature, the heat required by the user water supply end 13 is reduced, the opening quantity of the air source heat pumps of the heat source modules B1 and A2 is reduced, and the circulating pump set 3 performs the frequency-reducing operation; the circulating pump set 3 adopts a frequency conversion design, so that the starting current of the circulating pump set 3 during starting is reduced; the safe operation of the cable line and the power distribution element is protected, the cost is saved, the intelligent module 7 can also control the opening of the electric three-way valve VT29 according to the temperature difference between the user water supply end 13 and the user water return end 14, so that the water supply and the water return reach an equilibrium state, and direct heat supply is performed in the most energy-saving state.
(2) During heat accumulation, the intelligent module 7 controls the water pump frequency required by the circulating pump set 3 according to the water flow required by the heat pump which participates in heat accumulation to generate heat supply and the water resistance between the heat pump and the heat accumulation tank 4 (wherein the water resistance comprises a part of water resistance, such as B-C30 percent, of the part of water resistance which is used for ensuring that the user side does not freeze at night) to overcome an air source, controls the water pump frequency required by the circulating pump set 3 according to the water flow required by the circulating pump set 3 which participates in energy release to generate heat supply, and controls the water pump frequency required by the circulating pump set 3 to be always in a dynamic frequency conversion state when the water resistance between the B heat source assembly 1, the A heat source assembly 2 and the user water supply side 13 is required to overcome (wherein the water resistance comprises a part of water resistance, such as B-C5 percent, of water resistance which is used for ensuring that the energy accumulation tank does not freeze to the user side). (3) During electricity consumption, the intelligent module 7 can control the opening A-B70%, B-C30% and the electric valve V110 of the electric three-way valve VT18, the electric valve V211 is closed, the electric valve V312 is opened to store heat, when the backwater temperature is lower than the heat storage temperature, the opening of the electric three-way valve VT29 can be controlled to enlarge the EF opening, the auxiliary electric heater 5 can be manually opened to heat when the weather is cold, the temperature difference between the water supply end 13 of a user and the backwater end 14 of the user is enabled to run in a preset range, during heat release, the intelligent module 7 controls the opening of the electric three-way valve VT18 to be AB95%, BC5%, the electric valve V211 is closed, the electric valve V110 is opened, the electric valve V312 is opened, the opening of the electric three-way valve VT29 is E-F100%, E-D0% to release heat, the whole system just avoids the electricity consumption peak period, the use cost is greatly reduced, and meanwhile, the pressure of a power supply center is also reduced.
(4) Under extremely cold weather, the intelligent module 7 can also automatically control the opening degree of the electric three-way valve VT18 to be A-B70%, B-C30%, the electric valve V110 and the electric valve V312 to be closed, the electric valve V211 to be opened, and the opening degree of the electric three-way valve VT2 to be controlled according to the temperature difference between the user water supply end 13 and the user water return end 14, and under the condition that the B heat source module 1 and the A heat source module 2 can not supply heat, the auxiliary electric heater 5 is manually opened to supply heat, and the system is divided into the B heat source module 1 and the A heat source module 2 to perform two-stage heating, so that the adverse factors of one-stage heating are overcome.
The opening degrees of the electric three-way valves VT18 and VT29 are only exemplary, the opening ranges are selected according to the needs, and the specific opening ranges are adjusted according to the relations between users and heat sources under different operation conditions.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (1)
1. A method for implementing a superposition type energy-storage heat pump heating system is characterized in that,
the stacked energy-storage type heat pump heating system comprises an A heat source assembly (2), a B heat source assembly (1), a circulating pump group (3), a heat storage tank (4), a full-automatic water supplementing module (6) and a user end, wherein the user end comprises a user water supply end (13) and a user water return end (14), the inlet end of the B heat source assembly (1) is connected with the outlet end of the circulating pump group (3), and the outlet end of the B heat source assembly is connected with the inlet end of the A heat source assembly (2) and the user water supply end (13); the inlet end of the heat source module A (2) is connected with the user water supply end (13), and the outlet end of the heat source module A is connected with the inlet end of the heat storage tank (4); the inlet end of the heat storage tank (4) is connected with the outlet end of the circulating pump set (3), and the outlet end of the heat storage tank is connected with the user water supply end (13) and the user water return end (14); the inlet end of the circulating pump set (3) is connected with the outlet end of the full-automatic water supplementing module (6) and the user water return end (14); the outlet end of the full-automatic water supplementing module (6) is connected with the user water return end (14); the outlet end of the heat source module B (1) is connected with the inlet end of the heat source module A (2) and the user water supply end (13) through an electric three-way valve VT1 (8); the outlet end of the heat storage tank (4) is connected with the user water supply end (13) and the user backwater end (14) through an electric three-way valve VT2 (9); the circulating pump set (3) is a variable-frequency water pump set, and the full-automatic water supplementing module (6) is a full-automatic water dispenser; the heat source module B (1) and the heat source module A (2) comprise a plurality of air source heat pumps;
the intelligent water return device further comprises an intelligent module (7), wherein the intelligent module is connected with a user water return end (14), an electric three-way valve VT1 (8), an electric three-way valve VT2 (9), an electric valve V1 (10), an electric valve V2 (11) and an electric valve V3 (12); the heat source module comprises a heat storage tank (4) and is characterized by also comprising an auxiliary electric heater (5), wherein the auxiliary electric heater (5) is arranged on a connecting pipeline between the outlet end of the heat source module A and the inlet end of the heat storage tank (4);
the electric three-way valve VT1 (8) has two flow directions which are respectively B-A, B-C, one part of water heated by the first stage of the heat source module A (2) flows to the user water supply end (13) through the B-C of the electric three-way valve VT1 (8), and the other part flows to the heat source module B (1) through the B-A of the electric three-way valve VT1 (8); the B-C branch of the electric three-way valve VT1 (8) can be connected with an emergency valve (15) in parallel, the B-A branch of the electric three-way valve VT1 (8) can be connected with the emergency valve (15) in parallel, when the B-C branch and/or the B-A branch of the electric three-way valve VT1 (8) cannot work, the emergency valve (15) can be started, and water can be ensured to enter the inlet end of the B heat source module (1) and/or the user water supply end (13) through the branch of the emergency valve (15);
the electric three-way valve VT2 (9) has two flow directions, namely E-F, E-D respectively, one part of water flowing from the electric three-way valve VT1 (8) and water flowing from the heat storage tank (4) flows to the user water supply end (13) through E-F, and the other part flows to the user water return end (14) through E-D; the E, F branch of the electric three-way valve VT2 (9) can be connected with an emergency valve (15) in parallel, the E, D branch of the electric three-way valve VT2 (9) can be connected with the emergency valve (15) in parallel, when the E-F branch and/or the E-D branch of the electric three-way valve VT2 (9) cannot work, the emergency valve (15) can be started, and water can be ensured to enter the user water supply end (13) and/or the user water return end (14) through the branch of the emergency valve (15);
the outlet end of the circulating pump set (3) is communicated with a connecting pipeline of the heat storage tank (4) and the auxiliary electric heater (5) through an electric valve V1 (10), and the communication point is a; when the electric valve V1 (10) is opened during heat release, the circulating pump set (3) pressurizes the heat storage tank (4) through the opened electric valve V1 (10), and water in the heat storage tank (4) flows to the user water supply end (13) through the electric three-way valve VT2 (9);
the electric valve V3 (12) is arranged on the connecting pipeline between the heat storage tank (4) and the communication point a; when the heat is stored, the electric valve V3 (12) is opened, hot water flows through the electric valve V3 (12) to be stored in the heat storage tank (4), when the heat is released, the electric valve V1 (10) and the electric valve V3 (12) are opened, the circulating pump group (3) pressurizes the heat storage tank (4) through the opened electric valve V1 (10) and the opened electric valve V3 (12), and the water of the heat storage tank (4) flows to the user water supply end (13) through the electric three-way valve VT2 (9);
the electric valve V3 (12) is communicated with the connecting pipeline of the communication point a through the electric valve V2 (11) and the connecting pipeline of the heat storage tank (4) and the electric three-way valve VT1 (8); when directly supplying heat, hot water from the outlet of the B heat source module (1) flows to the user water supply end (13) through the electric valve V2 (11);
the implementation method comprises the following steps:
(1) when the direct heat supply is performed, the intelligent module (7) controls the working efficiency of the motor according to the temperature difference relation between water supply and water return, if the water supply temperature is X, when the water return temperature is Y, the difference value between X and Y exceeds a threshold value, the heat supply of the user water supply end (13) is insufficient, the B heat source module (1) and the A heat source module (2) start to perform machine increasing, and the circulating pump group (3) starts to increase frequency along with the increase of the numbers of the air source heat pumps of the B heat source module (1) and the A heat source module (2); along with the rise of the return water temperature, the heat required by a user water supply end (13) is reduced, the opening quantity of the air source heat pumps of the heat source modules B (1) and A (2) is reduced, and the circulating pump set (3) performs the frequency-reducing operation; the circulating pump set (3) adopts a frequency conversion design, so that the starting current of the circulating pump set (3) during starting is reduced; the safe operation of the cable distribution line and the power distribution element is protected, the cost is saved, the intelligent module (7) can also control the opening of the electric three-way valve VT2 (9) according to the temperature difference between the user water supply end (13) and the user water return end (14), so that the water supply and the water return reach an equilibrium state, and the direct heat supply is carried out in the most energy-saving state;
(2) when in heat accumulation, the intelligent module (7) controls the frequency of the water pump required by the circulating pump group (3) according to the water flow required by the heat pump which participates in heat accumulation to generate heat supply and the water resistance between the heat pump and the heat accumulation tank (4) to overcome the air source, wherein the water resistance comprises a part of water resistance which is used for ensuring that a user side does not freeze at night and reaches a part of the user side, and the B-C30% is controlled; when energy is released, according to the water flow required by the heat supply quantity generated by the circulating pump set (3) participating in energy release and the water resistance between the B heat source module (1), the A heat source module (2) and the user water supply end (13) to be overcome, the frequency of the water pump required by the circulating pump set 3 is controlled, so that the circulating pump set (3) is always in a dynamic variable frequency state, and the water resistance comprises a part of water resistance which is a part of water resistance reaching the user end for ensuring that the energy storage tank is not frozen, and B-C5% is controlled;
(3) when electricity is used, the intelligent module (7) can control the opening A-B70%, B-C30% and the electric valve V1 (10) of the electric three-way valve VT1 (8), the electric valve V2 (11) is closed, the electric valve V3 (12) is opened to store heat, when the backwater temperature is lower than the heat storage temperature, the opening of the electric three-way valve VT2 (9) can be controlled to enlarge the EF opening, the auxiliary electric heater (5) can be manually opened to heat in cold weather, so that the temperature difference between the water supply end (13) of a user and the backwater end (14) of the user is operated in a preset range, the intelligent module (7) controls the opening of the electric three-way valve VT1 (8) to be AB95%, BC5%, the electric valve V2 (11) is closed, the electric valve V1 (10) is opened, the electric valve V3 (12) is opened, the opening of the electric three-way valve VT2 (9) is E-F100%, E-D0% to release heat, the whole system is operated to avoid the electricity consumption peak, the use cost is greatly reduced, and the pressure of the power supply center is also reduced;
(4) under extremely cold weather, the intelligent module (7) can also automatically control the opening degree of the electric three-way valve VT1 (8) to be A-B70%, B-C30%, the electric valve V1 (10), the electric valve V3 (12) to be closed, the electric valve V2 (11) to be opened, and the opening degree of the electric three-way valve VT2 (9) to be controlled according to the temperature difference between the user water supply end (13) and the user water return end (14), under the condition that the B heat source assembly (1) and the A heat source assembly (2) cannot supply heat, the auxiliary electric heater (5) is manually opened to supply heat, and the system is divided into the B heat source assembly (1) and the A heat source assembly (2) to be heated in two stages, so that the adverse factors of one-stage warming are overcome;
the opening degree of the electric three-way valve VT1 (8) and the opening degree of the electric three-way valve VT2 (9) are selected to be an opening range according to requirements, and the specific opening degree range is adjusted according to the relation of users and heat sources under different operation conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810612173.7A CN108534210B (en) | 2018-06-14 | 2018-06-14 | Implementation method of stacked energy storage type heat pump heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810612173.7A CN108534210B (en) | 2018-06-14 | 2018-06-14 | Implementation method of stacked energy storage type heat pump heating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108534210A CN108534210A (en) | 2018-09-14 |
| CN108534210B true CN108534210B (en) | 2023-12-01 |
Family
ID=63470856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810612173.7A Active CN108534210B (en) | 2018-06-14 | 2018-06-14 | Implementation method of stacked energy storage type heat pump heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108534210B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340903A (en) * | 2018-11-01 | 2019-02-15 | 新疆新能源研究院有限责任公司 | Heat storing type electric boiler heat accumulation control method and dedicated unit |
| CN114383320A (en) * | 2020-10-06 | 2022-04-22 | 华东交通大学 | A heat pump hot water system based on fractal phase change accumulator |
Citations (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06288559A (en) * | 1993-03-31 | 1994-10-11 | Noritz Corp | Hot-water heating system |
| CN1133940A (en) * | 1996-02-16 | 1996-10-23 | 端木雨田 | Integrated comprehensive power device |
| WO1999062740A1 (en) * | 1998-06-02 | 1999-12-09 | Holland Neway International, Inc. | Suspension system for a vehicle seat having improved vibration reduction |
| CN1281128A (en) * | 1999-07-05 | 2001-01-24 | 清华同方股份有限公司 | Cold and heat accumulation type heat pump air conditioner |
| JP2001153381A (en) * | 1999-11-25 | 2001-06-08 | Kobe Steel Ltd | District heat supplying system |
| CN1766459A (en) * | 2003-10-31 | 2006-05-03 | 潘戈 | Hot water supplying and refrigerating device with solar heat collector and peak and valley electricity heat storage tank |
| CN1808002A (en) * | 2006-03-02 | 2006-07-26 | 游善宗 | Wind-energy water-energy storage and air conditioning integrated device |
| CN1945173A (en) * | 2006-11-09 | 2007-04-11 | 中国科学技术大学 | Multiple heat source multifunction solar energy heat pump |
| JP2007155232A (en) * | 2005-12-06 | 2007-06-21 | Hitachi Cable Ltd | Cold water circulation system |
| CN101482291A (en) * | 2009-02-06 | 2009-07-15 | 深圳市得益节能科技有限公司 | Open type dynamic circulating water heat accumulation apparatus |
| CN101621271A (en) * | 2009-07-31 | 2010-01-06 | 国网电力科学研究院 | Control method of low-speed stage starting of static frequency conversion starting of pumped storage power station |
| CN101900457A (en) * | 2010-07-29 | 2010-12-01 | 罗桂荣 | Shower, heating and air conditioning complex system device for producing hot water by using solar energy, air source and low power |
| CN102235775A (en) * | 2010-04-23 | 2011-11-09 | Lg电子株式会社 | Heat pump type speed heating apparatus |
| CN202947229U (en) * | 2012-09-10 | 2013-05-22 | 杭州华电华源环境工程有限公司 | Heat pump energy storage and temperature and humidity independent control system |
| CN103742966A (en) * | 2014-01-06 | 2014-04-23 | 昆明东启科技股份有限公司 | Central heating system with co-operation of carbon dioxide heat pump and solar energy |
| CN203586373U (en) * | 2013-11-25 | 2014-05-07 | 西安交通大学苏州研究院 | Solar centralized water heating system |
| CN104180418A (en) * | 2014-08-13 | 2014-12-03 | 华电电力科学研究院 | Direct heat accumulation system for heat supply network and heat accumulation and release method for direct heat accumulation system |
| CN104315629A (en) * | 2014-09-30 | 2015-01-28 | 山东中瑞新能源科技有限公司 | Buried pipe ground source heat pump system and method using peak power for assisting cold/heat storage |
| CN104654894A (en) * | 2013-11-17 | 2015-05-27 | 成都奥能普科技有限公司 | Heat accumulator combined segmental heat charging and discharging closed loop control system |
| CN104654896A (en) * | 2013-11-17 | 2015-05-27 | 成都奥能普科技有限公司 | Combined/split heat charge/release open-loop control system of heat accumulator |
| CN104913559A (en) * | 2015-06-15 | 2015-09-16 | 江苏苏源光一科技有限公司 | Method for refrigerating unit group control based on host coefficient of performance (COP) value |
| CN105370554A (en) * | 2014-08-15 | 2016-03-02 | 格兰富控股联合股份公司 | CONTROL METHOD FOR pump assembly |
| CN106352388A (en) * | 2016-09-05 | 2017-01-25 | 华北电力大学 | Electric heat pump and heat storage device combined thermal station system |
| CN206281096U (en) * | 2016-11-01 | 2017-06-27 | 中节能城市节能研究院有限公司 | A kind of new Regional Energy secondary pumping system of utilization transmission pipeline network accumulation of energy |
| CN106940033A (en) * | 2017-03-29 | 2017-07-11 | 哈尔滨工业大学 | Combine high/low temperature independence storage heating system based on many equipment for abandoning wind-powered electricity generation energy |
| CN107143948A (en) * | 2016-03-01 | 2017-09-08 | 王庆鹏 | Energy storage can the temperature difference greatly step cold and heat source system |
| CN208458055U (en) * | 2018-06-14 | 2019-02-01 | 济南金孚瑞供热工程技术有限公司 | Superposing type energy storage heat heat pump heating system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60332406D1 (en) * | 2002-03-15 | 2010-06-17 | Affymetrix Inc | System and method for scanning biological materials |
| CN102308155B (en) * | 2009-02-13 | 2014-01-08 | 东芝开利株式会社 | Secondary pump heat source system and secondary pump heat source control method |
| CA2964131C (en) * | 2016-04-13 | 2023-10-17 | Paul D. Mercier, Sr. | Enhanced convection, differential temperature managed, hydronic heating appliance |
| CA2975467C (en) * | 2016-08-04 | 2020-11-10 | Watershed Technologies Inc. | System and method for building climate control |
-
2018
- 2018-06-14 CN CN201810612173.7A patent/CN108534210B/en active Active
Patent Citations (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06288559A (en) * | 1993-03-31 | 1994-10-11 | Noritz Corp | Hot-water heating system |
| CN1133940A (en) * | 1996-02-16 | 1996-10-23 | 端木雨田 | Integrated comprehensive power device |
| WO1999062740A1 (en) * | 1998-06-02 | 1999-12-09 | Holland Neway International, Inc. | Suspension system for a vehicle seat having improved vibration reduction |
| CN1281128A (en) * | 1999-07-05 | 2001-01-24 | 清华同方股份有限公司 | Cold and heat accumulation type heat pump air conditioner |
| JP2001153381A (en) * | 1999-11-25 | 2001-06-08 | Kobe Steel Ltd | District heat supplying system |
| CN1766459A (en) * | 2003-10-31 | 2006-05-03 | 潘戈 | Hot water supplying and refrigerating device with solar heat collector and peak and valley electricity heat storage tank |
| JP2007155232A (en) * | 2005-12-06 | 2007-06-21 | Hitachi Cable Ltd | Cold water circulation system |
| CN1808002A (en) * | 2006-03-02 | 2006-07-26 | 游善宗 | Wind-energy water-energy storage and air conditioning integrated device |
| CN1945173A (en) * | 2006-11-09 | 2007-04-11 | 中国科学技术大学 | Multiple heat source multifunction solar energy heat pump |
| CN101482291A (en) * | 2009-02-06 | 2009-07-15 | 深圳市得益节能科技有限公司 | Open type dynamic circulating water heat accumulation apparatus |
| CN101621271A (en) * | 2009-07-31 | 2010-01-06 | 国网电力科学研究院 | Control method of low-speed stage starting of static frequency conversion starting of pumped storage power station |
| CN102235775A (en) * | 2010-04-23 | 2011-11-09 | Lg电子株式会社 | Heat pump type speed heating apparatus |
| CN101900457A (en) * | 2010-07-29 | 2010-12-01 | 罗桂荣 | Shower, heating and air conditioning complex system device for producing hot water by using solar energy, air source and low power |
| CN202947229U (en) * | 2012-09-10 | 2013-05-22 | 杭州华电华源环境工程有限公司 | Heat pump energy storage and temperature and humidity independent control system |
| CN104654894A (en) * | 2013-11-17 | 2015-05-27 | 成都奥能普科技有限公司 | Heat accumulator combined segmental heat charging and discharging closed loop control system |
| CN104654896A (en) * | 2013-11-17 | 2015-05-27 | 成都奥能普科技有限公司 | Combined/split heat charge/release open-loop control system of heat accumulator |
| CN203586373U (en) * | 2013-11-25 | 2014-05-07 | 西安交通大学苏州研究院 | Solar centralized water heating system |
| CN103742966A (en) * | 2014-01-06 | 2014-04-23 | 昆明东启科技股份有限公司 | Central heating system with co-operation of carbon dioxide heat pump and solar energy |
| CN104180418A (en) * | 2014-08-13 | 2014-12-03 | 华电电力科学研究院 | Direct heat accumulation system for heat supply network and heat accumulation and release method for direct heat accumulation system |
| CN105370554A (en) * | 2014-08-15 | 2016-03-02 | 格兰富控股联合股份公司 | CONTROL METHOD FOR pump assembly |
| CN104315629A (en) * | 2014-09-30 | 2015-01-28 | 山东中瑞新能源科技有限公司 | Buried pipe ground source heat pump system and method using peak power for assisting cold/heat storage |
| CN104913559A (en) * | 2015-06-15 | 2015-09-16 | 江苏苏源光一科技有限公司 | Method for refrigerating unit group control based on host coefficient of performance (COP) value |
| CN107143948A (en) * | 2016-03-01 | 2017-09-08 | 王庆鹏 | Energy storage can the temperature difference greatly step cold and heat source system |
| CN106352388A (en) * | 2016-09-05 | 2017-01-25 | 华北电力大学 | Electric heat pump and heat storage device combined thermal station system |
| CN206281096U (en) * | 2016-11-01 | 2017-06-27 | 中节能城市节能研究院有限公司 | A kind of new Regional Energy secondary pumping system of utilization transmission pipeline network accumulation of energy |
| CN106940033A (en) * | 2017-03-29 | 2017-07-11 | 哈尔滨工业大学 | Combine high/low temperature independence storage heating system based on many equipment for abandoning wind-powered electricity generation energy |
| CN208458055U (en) * | 2018-06-14 | 2019-02-01 | 济南金孚瑞供热工程技术有限公司 | Superposing type energy storage heat heat pump heating system |
Non-Patent Citations (1)
| Title |
|---|
| 鄞州新城区某商业地块空调机房群控系统浅析;王凯;;宁波化工(03);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108534210A (en) | 2018-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108105831A (en) | A kind of glass factory's low temperature exhaust heat recycling system | |
| CN201412910Y (en) | Hot water device taking air source heat pump and solar energy as heat sources | |
| CN111207434B (en) | Solar energy coupling air source heat pump complementary heating system and control method | |
| CN203131932U (en) | Heating system combining solar energy and off-peak electricity | |
| CN108534210B (en) | Implementation method of stacked energy storage type heat pump heating system | |
| CN202719753U (en) | Secondary heat exchange type process hot water thermal storage system | |
| CN216790608U (en) | Cold accumulation type cold water supply system using cooling tower as cold source | |
| CN204693564U (en) | A kind of hot water heating device with solar energy, low ebb electric heating energy | |
| CN203719189U (en) | Solar energy and air energy combination hot water control system | |
| CN208458055U (en) | Superposing type energy storage heat heat pump heating system | |
| CN203432006U (en) | Cold storage and combined cold supplying type air-conditioning system | |
| CN206724390U (en) | The integrated energy system of building field | |
| CN214095003U (en) | Cooling and heating dual-supply system comprehensively utilizing solar energy and off-peak electricity | |
| CN215718996U (en) | Double-bypass control steam extraction type mixed heat exchange frequency modulation device | |
| CN211976984U (en) | Low-temperature air source heat pump and solar energy combined heating system | |
| CN211146893U (en) | Hot water system combining air compressor waste heat and air energy heat pump | |
| CN201368525Y (en) | Heat storage device with common heat source for domestic hot water and heating water | |
| CN203891948U (en) | Adjustable operation device achieving high back pressure by circulating water heat supplying condensers of cogeneration units | |
| CN210241721U (en) | Air source heat pump heating device | |
| CN202034924U (en) | Coupling device for photoelectric and photothermal integrated system, fuel cell and composite condensing heat pump | |
| CN201273643Y (en) | Energy-saving air conditioning system | |
| CN209068646U (en) | Water loop heat pump air conditioning system operating system based on data center | |
| CN110631255A (en) | Hot water system combining air compressor waste heat and air energy heat pump | |
| CN208095438U (en) | The greenhouse heating system that directly-heated and accumulation of energy intelligently switch | |
| CN221614005U (en) | Energy storage power station temperature regulation system based on energy storage tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |