CN111442446B - An integrated dual-cold source chiller - Google Patents
An integrated dual-cold source chiller Download PDFInfo
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- CN111442446B CN111442446B CN202010379789.1A CN202010379789A CN111442446B CN 111442446 B CN111442446 B CN 111442446B CN 202010379789 A CN202010379789 A CN 202010379789A CN 111442446 B CN111442446 B CN 111442446B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 221
- 238000001816 cooling Methods 0.000 claims abstract description 118
- 239000007921 spray Substances 0.000 claims abstract description 66
- 238000005057 refrigeration Methods 0.000 claims abstract description 31
- 238000004378 air conditioning Methods 0.000 claims abstract description 30
- 230000006835 compression Effects 0.000 claims abstract description 28
- 238000007906 compression Methods 0.000 claims abstract description 28
- 239000003507 refrigerant Substances 0.000 claims description 25
- 239000000498 cooling water Substances 0.000 claims description 19
- 230000003068 static effect Effects 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000001704 evaporation Methods 0.000 description 16
- 230000008020 evaporation Effects 0.000 description 16
- 239000007788 liquid Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 239000002918 waste heat Substances 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229960000074 biopharmaceutical Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
本发明公开的属于制冷设备技术领域，具体为一种集成双冷源冷水机组，包括位于主机箱体内主机段和位于冷却箱体内的冷却段；所述主机段包括：压缩制冷回路、水冷自然冷却回路、冷冻水循环水回路；所述冷却段包括：喷淋水回路，有别于传统空调设备系统的水冷自然冷却系统，其切换依据采用环境湿球温度为切换依据，极大地提高了自然冷源的全年使用时长，同时水冷自然冷却系统的COP是传统风冷自然冷却系统的COP的2～3倍，系统全年运行节能优势明显。
The invention discloses a refrigeration equipment technical field, specifically an integrated dual-cold source chiller, comprising a main section located in a main box body and a cooling section located in a cooling box body; the main section comprises: a compression refrigeration circuit, a water-cooled natural cooling circuit, and a chilled water circulation water circuit; the cooling section comprises: a spray water circuit, which is different from the water-cooled natural cooling system of a traditional air-conditioning equipment system. Its switching basis adopts the ambient wet-bulb temperature as the switching basis, which greatly improves the annual use time of the natural cold source. At the same time, the COP of the water-cooled natural cooling system is 2 to 3 times that of the traditional air-cooled natural cooling system, and the system has obvious energy-saving advantages in year-round operation.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to an integrated double-cold-source water chilling unit.
Background
With the rapid development of economy in China, the demand of all industries for annual refrigerating air conditioning systems is larger and larger, especially the industries of metallurgical industry, power plant, bio-pharmaceuticals, data center and the like, the existing annual refrigerating unit mainly uses air-cooled compression refrigeration and water-cooled compression refrigeration, and meanwhile, an air-cooled natural cooling or cooling tower is introduced as a natural cooling auxiliary cold source, so that the annual refrigerating is ensured to be safe and the requirements of refrigerating processes are met, but the optimal combination of the compression refrigerating and the natural cooling modes is adopted, and a great optimizing space is provided for further reducing the energy consumption of the whole air conditioning system in annual operation and the integration of the compression refrigerating and the natural cooling.
Disclosure of Invention
The invention aims to provide an integrated double-cold-source water chilling unit, which aims to solve the problems that the prior compression refrigeration and natural cooling modes proposed in the background art further reduce the energy consumption of the whole air conditioning system in the whole year operation and how the compression refrigeration and natural cooling are integrated and have a large optimization space.
In order to achieve the above purpose, the present invention provides the following technical solutions: an integrated double-cold-source water chilling unit comprises a main machine section positioned in a main machine box body and a cooling section positioned in a cooling box body;
the host segment includes: a compression refrigeration loop, a water-cooling natural cooling loop and a chilled water circulating water loop;
the cooling section includes: a shower water circuit;
The compression refrigeration loop comprises a compressor, wherein an inlet of the compressor is connected to a refrigerant outlet of the evaporator, an exhaust port of the compressor is connected to an air inlet of the evaporation condenser, a liquid discharge outlet of the evaporation condenser is connected to a throttling mechanism, and an outlet of the throttling mechanism is connected to a refrigerant loop inlet of the evaporator;
the water cooling natural cooling loop comprises a cooling circulating water pump, a suction port of the cooling circulating water pump is connected to a cooling water loop outlet of the plate heat exchanger, a water outlet of the cooling circulating water pump is connected to a natural cooler inlet, and the natural cooler outlet is connected to a cooling water loop inlet of the plate heat exchanger;
The chilled water circulation water loop comprises an evaporator, wherein a chilled water inlet of the evaporator is connected to a water supply pipeline of an air conditioning system, a chilled water outlet of the evaporator is connected to an a water outlet of an electric three-way valve, water inlets a and b of the electric three-way valve are divided into two branches, one branch water inlet a is connected to a return water loop of the air conditioning system, the other branch water inlet b is connected to a chilled water inlet of a plate heat exchanger, and a chilled water outlet of the plate heat exchanger is connected to the return water loop of the air conditioning system;
The spray water loop comprises a spray water pump, a suction port of the spray water pump is connected to a water outlet of the circulating water tank, a water outlet of the spray water pump is connected to a spray water distribution device, the spray water distribution device is positioned above an evaporation condenser and a natural cooler, and the evaporation condenser and the natural cooler are positioned above the circulating water tank.
Preferably, the middle of cooling section is equipped with the static pressure device of airing exhaust, and this static pressure device of airing exhaust is located intermediate position, and upper portion is equipped with exhaust fan, and the lower part is equipped with circulating water tank, and the both sides of this static pressure device of airing exhaust all are equipped with the cooling combination section, and this cooling combination section all includes from last to down: spray water distribution device, evaporative condenser, natural cooler, circulation water tank, this cooling combination section all includes from left to right: the device comprises a water retaining machine core, an evaporation condenser, a natural cooler and an air inlet grille.
Preferably, the number and the upper and lower relation of the evaporative condenser and the natural cooler which are positioned between the spray water distribution device and the circulating water tank in the cooling combined section can be adjusted.
Preferably, the evaporative condenser comprises a tubular, plate-and-tube evaporative condenser and combinations thereof.
Preferably, the natural cooler comprises a coil pipe type, a fin-and-tube type heat exchanger and a spiral pipe type.
Preferably, the compression refrigeration loop and the water-cooling natural cooling loop in the main machine section are separated from the cooling section by an intermediate baffle.
Preferably, the middle part of the cooling combined section, which is positioned between the spraying water distribution device and the circulating water tank, replaces the area of a part of the evaporative condenser or the natural cooler with the filler.
Compared with the prior art, the invention has the beneficial effects that:
1) The invention is different from the water-cooling natural cooling system of the traditional air conditioning equipment system, the switching basis adopts the temperature of the ambient wet bulb as the switching basis, the annual use time of a natural cold source is greatly improved, meanwhile, the COP of the water-cooling natural cooling system is 2 to 3 times of that of the traditional air-cooling natural cooling system, and the annual operation energy-saving advantage of the system is obvious;
2) The invention adopts the integrated design concept to perfectly combine the compression refrigeration system and the water-cooling natural cooling system, the system can flexibly select a refrigeration mode according to the needs, combines the characteristics of the evaporative condensation/cooling water chilling unit, and maximally improves the energy efficiency of the compression refrigeration system while fully utilizing the free refrigeration characteristic of the natural cold source, thereby having the characteristics of lower operation energy consumption, water saving, high natural cold energy efficiency, high utilization rate, high system integration level and the like. In addition, due to the unique arrangement form of the spraying sections, the water chilling unit is more compact in arrangement, and the occupied area of the system and the equipment is smaller;
3) The invention has unique cooling section structure design and natural cooler and evaporative condenser double-cooling (heat exchange) design concept, greatly improves the heat exchange performance of the respective heat exchangers, reduces the heat exchange material cost, and improves the energy efficiency of the respective systems of compression refrigeration and natural cooling.
Drawings
FIG. 1 is a front view and a system schematic diagram of an integrated double-cooling (evaporative condensing/natural cooling) chiller according to a first embodiment of the present invention;
FIG. 2 is a top view of an integrated double-cooling (evaporative condensing/natural cooling) chiller according to a first embodiment of the present invention;
FIG. 3 is a right side view of a cooling section of an integrated double-cooling (evaporative condensing/natural cooling) chiller according to a first embodiment of the present invention;
Fig. 4 is a front view and a system schematic diagram of an integrated double-cooling (evaporative condensing/natural cooling) chiller according to a second embodiment of the present invention.
In the figure: the device comprises a compressor 1, an evaporation condenser 2, a throttling mechanism 3, an evaporator 4, a spray water pump 5, a circulating water tank 6, a spray water distribution device 7, a cooling section 8, a heat extraction fan 9, an exhaust static pressure device 10, a cooling circulating water pump 11, a natural cooler 12, a plate heat exchanger 13, an electric three-way valve 14, a return water loop of an air conditioning system 15, a water supply loop of the air conditioning system 16, a cooling combination section 17, a partition plate 18, an air inlet grille 19, a main machine box 20 and a water retaining machine core 21.
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.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The present invention relates to an integrated double-cooling (evaporative condensing/natural cooling) chiller, as shown in fig. 1-3, the first embodiment includes: a main machine section located in the main machine box 20 and a cooling section 8 located in the cooling box. The host section includes: a compression refrigeration loop, a water-cooling natural cooling loop and a chilled water circulating water loop; the cooling section includes: and a spray water loop.
The compression refrigeration circuit comprises a compressor 1, an inlet of the compressor 1 is connected to a refrigerant outlet of an evaporator 4, a discharge outlet of the compressor 1 is connected to an inlet of an evaporation condenser 2, a drain outlet of the evaporation condenser 2 is connected to a throttle mechanism 3, and an outlet of the throttle mechanism 3 is connected to a refrigerant circuit inlet of the evaporator 4.
The natural cooling circuit comprises a cooling circulation water pump 11, a suction port of the cooling circulation water pump 11 is connected to a cooling water (primary side) circuit outlet of a plate heat exchanger 13, a water outlet of the cooling circulation water pump 11 is connected to an inlet of a natural cooler 12, and an outlet of the natural cooler 12 is connected to a cooling water (primary side) circuit inlet of the plate heat exchanger 13.
The chilled water circulation water circuit comprises an evaporator 4, wherein the chilled water inlet of the evaporator 4 is connected to an air conditioning system water supply pipeline 16, the chilled water outlet of the evaporator 4 is connected to an a water outlet of an electric three-way valve 14, water inlets a and b of the electric three-way valve 14 are divided into 2 branches, one branch water inlet a is connected to an air conditioning system water return circuit 15, the other branch water inlet b is connected to the chilled water inlet of a plate heat exchanger 13, and the chilled water outlet of the plate heat exchanger 13 is connected to the air conditioning system water return circuit 15.
The waterway of the electric three-way valve is a-c when the unit is in the compression refrigeration mode, and is b-c when the unit is in the combined refrigeration mode or the full natural refrigeration mode.
The spray water loop comprises a spray water pump 5, a suction port of the spray water pump is connected to a water outlet of a circulating water tank 6, a water outlet of the spray water pump 5 is connected to a spray water distribution device 7, the spray water distribution device 7 is positioned above an evaporative condenser 2 and a natural cooler 12, and the evaporative condenser 2 and the natural cooler 12 are positioned above the circulating water tank 6.
Further, the middle of the cooling section 8 is provided with an air exhaust static pressure device 10, the air exhaust static pressure device 10 is located at the middle position, the upper part is provided with a heat exhausting fan 9, the lower part is provided with a circulating water tank 6, two sides of the air exhaust static pressure device 10 are respectively provided with a cooling combination section 17, and the cooling combination section 17 comprises from top to bottom: the spray water distribution device 7, the evaporative condenser 2, the natural cooler 12 and the circulating water tank 6, and the cooling combination section 17 comprises the following components from left to right: the water retaining machine core 21, the evaporation condenser 2, the natural cooler 12 and the air inlet grille 19.
When the cooling device is in operation, outdoor air is subjected to air inlet by the air inlet grille 19 under the action of the heat exhausting fan 9, and heat generated by the cooling combination 17 is exhausted out of the cooling section 8 through the evaporative condenser 2, the natural cooler 12, the water retaining machine core 21 and the air exhaust static pressure device 10 respectively.
Furthermore, the number and the up-down relation of the evaporative condenser 2 and the natural cooler 12 which are positioned between the spray water distribution device 7 and the circulating water tank 6 in the cooling combined section 17 can be adjusted according to the system arrangement requirement.
Further, the evaporative condenser 2 includes tubular, plate-type, plate-tube type evaporative condensers and combinations thereof.
Further, the natural cooler 12 includes coil type, fin-tube type heat exchanger, and spiral tube type.
Further, the compression refrigeration circuit and the water-cooling natural cooling circuit in the main machine section are separated from the cooling section 8 by an intermediate partition 18.
Furthermore, the middle part of the cooling combination 17 between the spray water distribution device 7 and the circulating water tank 6 can be added with filler to improve the heat exchange effect, or the filler is used for replacing the area of the partial evaporation condenser 2 or the natural cooler 12, so that the heat exchanger cost is reduced.
The invention relates to an integrated double-cooling (evaporative condensation/natural cooling) water chilling unit which has different operation modes, and the specific implementation modes are as follows:
1) Compression refrigeration mode: in this mode, chilled water in the circulating water system enters the unit through the air conditioning system water return loop 15, then enters through the a of the electric three-way valve 14, then enters the evaporator 4 through the c port, is cooled, and enters the air conditioning system water supply pipeline 16 to provide a cold source for the tail end equipment of the air conditioning system, and the chilled water enters the main machine section through the air conditioning system water return loop 15 again after absorbing indoor heat, so that the circulating is repeated. The refrigerant side of the evaporator 4 works by adopting a compression refrigeration system, the refrigerant in the evaporator 4 absorbs the heat of chilled water in the circulating water system and is vaporized into low-temperature low-pressure steam, the compressor 1 sucks the refrigerant steam, and the refrigerant steam is changed into high-temperature high-pressure steam after compression. The high temperature and high pressure refrigerant vapor enters the evaporative condenser 2. The spray water pump 5 sucks the water in the circulating water tank 6 into the spray water distribution device 7, and the spray water distribution device 7 sprays spray water. The refrigerant steam entering the evaporative condenser 2 gives off heat, and spray water sprayed by the spray water distribution device 7 takes away heat to condense the refrigerant steam into high-pressure low-temperature liquid. The condensed high-pressure low-temperature refrigerant liquid is throttled by the throttle mechanism 3 and then becomes low-pressure low-temperature liquid, the low-temperature low-pressure refrigerant liquid enters the evaporator 4 and absorbs heat and evaporates again, and the circulation is performed in this way, so that the cooling process of the chilled water in the evaporator 4 is realized. In addition, spray water sprayed by the spray water distribution device 7 in the circulation process flows through the lower layer evaporation condenser 2 and the natural cooler 12 after passing through the evaporation condenser 2 and being cooled by the natural cooler 12, and falls into the circulation water tank 6 for circulation use. The natural cooler 12 may exchange heat between the shower water with the waste heat and the air, transferring the waste heat to the air and dispersing it into the atmosphere. In addition, the natural cooling circuit is in a closed state at this time. The compression refrigeration system has the advantages that the heat exchange is more direct, so that the condensation temperature is lower, and the energy efficiency of compression refrigeration is higher.
2) Combined cooling mode: in this mode, chilled water of the circulating water system enters the unit through the air conditioning system water return loop 15, then the chilled water is pre-cooled through the plate heat exchanger 13, then enters the electric three-way valve 14 through the port b, exits through the port c, enters the evaporator 4 for cooling again, enters the air conditioning system water supply pipeline 16, provides a cold source for the tail end equipment of the air conditioning system, and enters the main machine section through the air conditioning system water return loop 15 after absorbing indoor heat, thus repeatedly circulating. The refrigerant side of the evaporator 4 works by adopting a compression refrigeration system, the refrigerant in the evaporator 4 absorbs the heat of chilled water in the circulating water system and is vaporized into low-temperature low-pressure steam, the compressor 1 sucks the refrigerant steam, and the refrigerant steam is changed into high-temperature high-pressure steam after compression. The high temperature and high pressure refrigerant vapor enters the evaporative condenser 2. The spray water pump 5 sucks the water in the circulating water tank 6 into the spray water distribution device 7, and the spray water distribution device 7 sprays spray water. The refrigerant steam entering the evaporative condenser 2 gives off heat, and spray water sprayed by the spray water distribution device 7 takes away heat to condense the refrigerant steam into high-pressure low-temperature liquid. The condensed high-pressure low-temperature refrigerant liquid is throttled by the throttle mechanism 3 and then becomes low-pressure low-temperature liquid, the low-temperature low-pressure refrigerant liquid enters the evaporator 4 and absorbs heat and evaporates again, and the circulation is performed in this way, so that the cooling process of the chilled water in the evaporator 4 is realized. In addition, spray water sprayed by the spray water distribution device 7 in the circulation process flows through the lower layer evaporation condenser 2 and the natural cooler 12 after passing through the evaporation condenser 2 and being cooled by the natural cooler 12, and falls into the circulation water tank 6 for circulation use. In addition, at this time, the natural cooling circuit is also in an operating state, the cooling water in the plate heat exchanger 13 absorbs heat in the chilled water, and is sucked by the cooling circulation water pump 11, and the cooling water enters the natural cooler 12 with the aid of the cooling circulation water pump 11. The spray water pump 5 sucks the water in the circulating water tank 6 into the spray water distribution device 7, and the spray water distribution device 7 sprays spray water. The cooling water entering the natural cooler 12 gives off heat, and the spray water sprayed by the spray water distribution device 7 takes away heat to cool the cooling water. Cooling water after cooling is fed into the plate heat exchanger 13 to absorb heat in the chilled water circulating water loop, and the chilled water is circulated. The cooling process of the chilled water in the plate heat exchanger 13 is achieved. Since a large amount of heat is borne by the natural cooling loop system in this mode, the power consumption of the unit in this mode is greatly reduced.
3) Full natural cooling mode: in this mode, chilled water of the circulating water system enters the unit through the air conditioning system water return loop 15, then the chilled water is cooled through the plate heat exchanger 13, then the cooled chilled water sequentially passes through the port b and the port c of the electric three-way valve 14 and the evaporator 4, and the cooled chilled water provides a cold source for the tail end equipment of the air conditioning system through the air conditioning system water supply pipeline 16, and enters the main machine section through the air conditioning system water return loop 15 after absorbing indoor heat, so that the chilled water is circulated repeatedly. At this time, the compression refrigeration system stops working, and the natural cooling circuit is in a working state. The cooling water in the plate heat exchanger 13 absorbs heat in the chilled water, is sucked by the cooling circulation water pump 11, and enters the natural cooler 12 with the aid of the cooling circulation water pump 11. The spray water pump 5 sucks the water in the circulating water tank 6 into the spray water distribution device 7, and the spray water distribution device 7 sprays spray water. The cooling water entering the natural cooler 12 gives off heat, and the spray water sprayed by the spray water distribution device 7 takes away heat to cool the cooling water. Cooling water after cooling is fed into the plate heat exchanger 13 to absorb heat in the chilled water circulating water loop, and the chilled water is circulated. The cooling process of the chilled water in the plate heat exchanger 13 is achieved. In addition, spray water sprayed by the spray water distribution device 2 in the circulation process is cooled by the evaporation condenser 2 and then passes through the natural cooler 12, flows through the lower layer evaporation condenser 2 and the natural cooler 12, and falls into the circulation water tank 6 for circulation use. The evaporative condenser 2 may exchange heat with the air from the shower water carrying the waste heat, so that the waste heat is transferred to the air and dissipated to the atmosphere. Because the whole heat is completely borne by the natural cooling loop system in the mode, the power consumption of the whole system is lower, and the energy efficiency of the unit is higher.
In addition, in the working process of the three working modes, the heat exhausting fan 9 can accelerate air flow, and heat in the refrigerant, the cooling water and the spray water can be taken away rapidly through the air, so that the heat radiating efficiency is improved.
Fig. 4 is a schematic diagram of a second embodiment of a dual-cold-source water chiller based on an indirect evaporative cooling technology according to the present invention. In the second embodiment, the plate heat exchanger 13 and the cooling water circulation pump 11 are omitted. A cooling water loop is formed among the electric three-way valve 14, the air conditioning system backwater loop 15 and the natural cooler 12. Specifically, the difference between the third embodiment and the first embodiment is that: the water outlet of the air conditioning system water return loop 15 is connected to the natural cooler 12, and the natural cooler 1 is connected to the electric three-way valve 14.
The present invention has the advantages of the first embodiment: because the heat exchange links between the natural cooling loop and the chilled water circulating water loop are reduced, the heat exchange of the system is more direct, and the annual running time and energy efficiency of the combined refrigeration mode and the complete natural cooling mode are greatly improved.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010379789.1A CN111442446B (en) | 2020-05-08 | 2020-05-08 | An integrated dual-cold source chiller |
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| CN202010379789.1A CN111442446B (en) | 2020-05-08 | 2020-05-08 | An integrated dual-cold source chiller |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111442445A (en) * | 2020-05-08 | 2020-07-24 | 台佳空调系统(江苏)有限公司 | Double-cold-source water chilling unit refrigerating system based on indirect evaporative cooling technology |
| CN114340299A (en) * | 2020-09-30 | 2022-04-12 | 维谛技术有限公司 | Refrigeration station system and control method |
| CN112682976A (en) * | 2021-01-15 | 2021-04-20 | 珠海格力电器股份有限公司 | Evaporative water chilling unit and control method thereof |
| CN112556050A (en) * | 2021-02-26 | 2021-03-26 | 山东雅士股份有限公司 | Cold water (heat pump) unit with indirect natural cooling function for operating room |
| CN113483412B (en) * | 2021-06-21 | 2022-04-15 | 清华大学 | Multi-mode water and fluorine multi-line system |
| CN114198929B (en) * | 2021-06-30 | 2023-04-11 | 浙江青风环境股份有限公司 | Strong cold room refrigerating unit and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212057611U (en) * | 2020-05-08 | 2020-12-01 | 台佳空调系统(江苏)有限公司 | Integrated double-cold-source water chilling unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103574965B (en) * | 2012-07-20 | 2016-12-21 | 广州市华德工业有限公司 | A kind of handpiece Water Chilling Units of band filler coupling coil pipe evaporative condenser |
| CN104456786B (en) * | 2014-11-11 | 2017-05-17 | 陕西优斯达环境科技有限公司 | Evaporation cooling and mechanical refrigeration combined integrated air conditioning unit |
| CN106016548A (en) * | 2016-07-14 | 2016-10-12 | 昆山台佳机电有限公司 | Dual-cooling water cooling unit using natural cold source |
| CN107014015B (en) * | 2017-05-02 | 2018-08-10 | 浙江国祥股份有限公司 | Recovery type heat evaporating condensation type handpiece Water Chilling Units |
| CN108917238A (en) * | 2018-09-20 | 2018-11-30 | 昆山台佳机电有限公司 | A kind of compress is freezed with the air-conditioning system combined of freezing naturally |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212057611U (en) * | 2020-05-08 | 2020-12-01 | 台佳空调系统(江苏)有限公司 | Integrated double-cold-source water chilling unit |
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