CN101922773A - Changeable flow ground source heat pump unit system, controller and control method - Google Patents
Changeable flow ground source heat pump unit system, controller and control method Download PDFInfo
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- CN101922773A CN101922773A CN2009101478876A CN200910147887A CN101922773A CN 101922773 A CN101922773 A CN 101922773A CN 2009101478876 A CN2009101478876 A CN 2009101478876A CN 200910147887 A CN200910147887 A CN 200910147887A CN 101922773 A CN101922773 A CN 101922773A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 238000004378 air conditioning Methods 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 238000004891 communication Methods 0.000 claims description 26
- 238000010792 warming Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 238000010977 unit operation Methods 0.000 claims description 3
- 230000001413 cellular effect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Abstract
The invention discloses a changeable flow ground source heat pump unit system, which comprises a ground source side circulating water pump, a ground source heat pump unit and an air conditioning system circulating water pump, which are integrated in a unit to form the ground source heat pump unit system. The invention also discloses a changeable flow ground source heat pump unit system controller, which comprises a room temperature acquisition unit and a changeable flow master control unit and is used for controlling circulating consumption coordinate conversion of the ground source circulating water pump, the heat pump unit and the air conditioner in the system unit. The invention also discloses a control method for the changeable flow ground source heat pump unit system, which realizes effect maximization of the unit system.
Description
Technical field
The present invention relates to the earth source heat pump field, a kind of or rather changeable flow ground source heat pump unit system and controller and controller method.
Background technology
The geothermal heat pump air-conditioner unit has a wide range of applications in building heat-energy, is widely used in the buildings such as office building, school, local-style dwelling houses, is used to provide warming and summer refrigeration.
In source pump, the height of COP value has determined the efficiency of unit, and therefore, how making unit improve efficiency is the important topic of art of heat pumps research.
In the winter time during heat supply, heating capacity (W) and the ratio of input power (W) are defined as the cycle performance coefficient COP of heat pump; When freezing summer, the ratio of refrigerating capacity (W) and input power (W) is defined as the Energy Efficiency Ratio EER of heat pump.For not causing ambiguity, we with winter the heat pump cycle coefficient of performance and summer heat pump the Energy Efficiency Ratio expression-form all adopt COP (Energy Efficiency Ratio) expression.COP value (refrigerating efficiency) is actual to be exactly the heat pump refrigerating capacity (heating capacity) that can realize and the ratio of input power, and under identical operating mode, the efficient of big more this heat pump of explanation of its ratio is high more energy-conservation more.People have carried out many research around the raising of the COP value of earth source heat pump unit, but the research of the COP value raising of whole ground source heat pump unit system be yet there are no report.
An earth-source hot-pump system, comprise the ground source circulatory system, earth-source hot-pump system and air-conditioning system, compressor in this system and water circulating pump consume part for system's main energy sources, how to reduce system energy consumption, make ground source heat pump unit system obtain higher Energy Efficiency Ratio COP, we have invented following technical scheme.
Summary of the invention
What the present invention will solve is that problem has provided a kind of changeable flow ground source heat pump unit system and controller and control method thereof, realizes the changeable current control of heat pump, thereby improves the COP value of cellular system.
For achieving the above object, the technical scheme of embodiments of the invention proposes a kind of earth source heat pump changeable flow cellular system, comprise ground source water circulating pump, earth source heat pump unit and air-conditioning system water circulating pump (or air-conditioning circulating fan), it is integrated in the unit, forms a ground source heat pump unit system.
For achieving the above object, the technical scheme of embodiments of the invention proposes a kind of earth source heat pump changeable flow generator set controller, comprise changeable flow Master Control Unit and room temperature collecting unit, make water circulating pump, source pump and the air-conditioner circulating water pump of its ground origin system can realize coordinating frequency conversion, thereby the energy consumption of the low system unit of degraded, and the COP value of raising cellular system.
Described room temperature is gathered control module 2 and is used to gather the design temperature of room temperature and input, passes to the changeable flow Master Control Unit and passes to middle RS485 communication module 22 in the total unit 1 of changeable flow by RS485 communication module 21.
Described changeable flow Master Control Unit 1, its centralized control unit 11 are used to control RS485 communication module 12, GPRS transceiver module 13, cold acquisition module 14, hot water circulating pump start-stop 15, power supply supply and current/voltage detection module 16, heat pump unit 17, water source pump frequency conversion module 18 and air conditioner water frequency-variable module 19;
Described DSP center cell, further comprise, A/D analog-to-digital conversion module, 2 I/O input/output modules, 1 stepper drive, outside temperature signal converts data signal to by the A/D analog-to-digital conversion module, and deliver to dsp controller, carrying out analytical calculation through dsp controller, to send a command to frequency converter be that the frequency of frequency converter changes, and then make the rotating speed of compressor or water pump reach successive control.
Described RS485 communication module 12 is used for receiving the room temperature that passes over and the design temperature of temperature collecting cell 2 RS485 communication modules 12, and passes to centralized control unit 11.
Described GPRS transceiver module 13, be used for receiving the operation information of unit and passing to host computer from centralized control unit 11, in the information communication of the carrying out of described and host computer, described information comprises operational factor and instruction, the operational factor of water source pump and the operational factor and the instruction of instruction and air-conditioning water pump of compressor.
Described cold and hot amount acquisition module 14, further comprise air-conditioning Inlet and outlet water temperature temperature collect module and flow collection module, described air-conditioning Inlet and outlet water acquisition module further comprises, place the temperature sensor on the air-conditioning inlet and outlet pipe, described flow collection module further comprises flow sensor.
Described hot water circulating pump start-stop 15 is used for the productive life water.
Power supply is supplied with and current/voltage detection module 16 comprises current detecting and isolated-phase buses electric current, calculates the electric current of compressor, water source pump and air-conditioning water pump according to described bus current, thereby calculates the consumed power of motor.
Described heat pump unit 17 comprises that further compressor variable frequency module 171 and four-way cross valve and electronic expansion valve module 172, is used to control the startup and the frequency conversion of compressor.
Water source pump frequency conversion module 18 comprises that 1 is followed water pump and 1 frequency converter, is used for the frequency conversion of water source pump.
Air conditioner water frequency-variable module 19 comprises 1 water pump and 1 frequency converter, is used for the frequency conversion of air-conditioning water pump.
Described centralized control unit is the DSP data processor.
For achieving the above object, the technical scheme of embodiments of the invention proposes a kind of changeable flow control method, may further comprise the steps:
A, room temperature controller pass to the DSP master controller with information such as desired temperature, start-stops;
B, centralized control unit pass to host computer with the unit operation parameter by GPRS;
C, DSP according to room cooling and warming information start the frequency conversion heat pump unit, source variable frequency pump and air-conditioning variable frequency pump;
D, cold and hot amount collection and electric current and voltage acquisition module are gathered related data and are provided foundation for usefulness control;
E, heat pump unit, water pump module require control compressor and pump rotary speed according to DSP control;
F, DSP calculate contrast by usefulness and change the parameter adjustment pump rotary speed, allow the usefulness at different control points reach maximization;
G, energy recovery module controls hot water follow water pump at unit refrigerating state midwifery next time hot water alive.
Described steps A further may further comprise the steps:
Information such as A1, room temperature controller 21 set temperature value, start-stop;
Information such as A2, set temperature value, start-stop pass to RS485 communication module 22;
A3, RS485 communication module 22 pass to RS485 communication module 12 with information such as set temperature value, start-stops;
A4, RS485 communication module 12 pass to the DSP master controller with information such as set temperature value, start-stops.
Described step B further may further comprise the steps:
B1, heat pump unit, water circulating pump unit, source and the air-conditioner circulating water pump unit operational factor of gathering unit and water circulating pump;
B2, operational factor are delivered to the DSP control module
B3, be uploaded to host computer by GPRS.
Described step D may further comprise the steps:
Inlet and outlet water acquisition module in D1, the cold and hot acquisition module is gathered the temperature of air-conditioning Inlet and outlet water, and calculates temperature difference Δ T;
Flow collection module in D2, the cold and hot acquisition module is gathered the specific discharge M of fluid in the air-conditioning duct;
The data that D3, basis collect are calculated the energy that unit produces
Q=CM Δ T (Q represents energy, C unit's specific heat);
The electric current and voltage of the electric current of D4, electric current and voltage acquisition module parsing unit, water source pump, air-conditioning water pump, and calculate unit consumed power W=IV=I1V1+I2V2+I3V3, wherein: I1, V1, I2, V2, I3, V3 be respectively compressor bank, the voltage and current of source water circulating pump and air-conditioner circulating water pump;
Described step F may further comprise the steps:
F1, by gathering and calculating gained Q and W, calculate unit usefulness COP value, COP=Q/w;
F2, DPS use fuzzy control technology, calculate contrast by usefulness and change the parameter adjustment pump rotary speed, allow the usefulness at different control points reach maximum
Description of drawings:
Fig. 1 is the controller architecture block diagram
Fig. 2 is a control flow chart
The specific embodiment
About feature of the present invention and practical application, now be described in detail as follows as most preferred embodiment in conjunction with the accompanying drawings:
A kind of changeable flow generator set controller of the present invention comprises changeable flow Master Control Unit 1 and room temperature collecting unit 2 as shown in Figure 1.Wherein room temperature control module 2 be provided with and terminal house between the temperature controller that is equal to of quantity, the temperature that is used to gather the temperature in room and sets the room, RS485 communication module 12 is used to realize the communication of temperature controller and master control flow controlling unit 1; Described master control flow Master Control Unit 2 further comprises DSP centralized control unit 11, RS485 communication module 12, GPRS transceiver module 13, cold and hot amount acquisition module 14, hot water circulating pump start-stop 15, power supply supply and electric current and voltage detection module 16, heat pump control module 17, water source pump frequency conversion module 18 and air conditioner water pump frequency conversion module 19.
Embodiment one, adopts changeable flow controller shown in Figure 1, and the flow process of the changeable flow control method of its invention the present invention includes following steps as shown in Figure 2:
Step S01: room temperature controller sends information such as desired temperature temperature to DSP, and room temperature controller 21 passes to RS485 communication module 22 with information such as set temperature value, start-stops information such as set temperature value, start-stop are passed to RS485 communication module 12 and pass to the DSP master controller.
Step S02: centralized control unit is sent to host computer with the unit operation parameter, and step S02 further comprises: the heat pump unit operational factor is delivered to the DSP control module; Water circulating pump unit, source, ground operational factor is delivered to the DSP control module; The operational factor that unit and water circulating pump are gathered in air-conditioner circulating water pump unit is delivered to the DSP control module; Be uploaded to host computer by GPRS.
Step S03:DSP is according to room cooling and warming information heat pump unit, earth source air conditioner variable frequency pump and air-conditioning variable frequency pump, and step S03 further may further comprise the steps:
DSP starts heat pump unit according to room cooling and warming information; DSP starts cross valve according to room cooling and warming information, to determine the unit refrigeration or to heat; DSP starts electric expansion valve according to room cooling and warming information, determines the acting size of unit with the size of its switching value; DSP starts source, ground variable frequency pump according to room cooling and warming information; DSP starts the air-conditioning variable frequency pump according to room cooling and warming information.
Step S04: cold and hot amount collection and current/voltage module are gathered related data, and for efficiency control provides foundation, step S04 is divided into following steps again: the Inlet and outlet water acquisition module in the cold and hot acquisition module is gathered the temperature of air-conditioning Inlet and outlet water, and calculates temperature difference Δ T; Flow collection module in the cold and hot acquisition module is gathered the specific discharge M of fluid in the air-conditioning duct; According to the data that collect, calculate the energy that unit produces, Q=CM Δ T (Q represents energy, C unit's specific heat); The electric current and voltage of the electric current of electric current and voltage acquisition module parsing unit, water source pump, air-conditioning water pump, and calculate unit consumed power W=IV=I1V1+I2V2+I3V3, wherein: I1, V1, I2, V2, I3, V3 be respectively compressor bank, the voltage and current of source water circulating pump and air-conditioner circulating water pump;
Step S05: heat pump unit, water pump module require control compression and pump rotary speed according to DSP control, and step S05 may further comprise the steps again: outside temperature signal converts data signal to by the A/D analog-to-digital conversion module, and delivers to dsp controller; Carrying out analytical calculation through dsp controller, to send a command to frequency converter be that the frequency of frequency converter changes; And then make the rotating speed of compressor or water pump reach successive control.
Step S06:DSP calculates by system effectiveness and regulates pump rotary speed, allows the energy at different control points maximize, and its step S06 may further comprise the steps again:
Energy Efficiency Ratio COP calculates according to energy and consumed power that unit produces in system; Utilize fuzzy control technology to regulate the rotating speed of water pump, make the COP value of its system maximum.
Step S07: energy recovery module controls hot water circulating pump is recovery waste heat productive life hot water under the unit refrigerating state.
Though the present invention discloses as above with aforesaid preferred embodiment, so its pass is non-does a little change and retouching in order to limit the present invention as not breaking away from the spirit and scope of the present invention, and these change with retouching and also are considered as protection scope of the present invention.
Claims (9)
1. changeable flow ground source heat pump unit system is characterized in that: comprise source, at least one tableland water circulating pump, source pump and air-conditioner circulating water pump (or a circulating fan), and be integrated in the unit, form a heat pump unit system.
2. the changeable flow device of an earth source heat pump unit is characterized in that: comprise a room temperature collecting unit and changeable flow Master Control Unit,
Described room temperature collecting unit is used to gather the design temperature of room temperature and input;
Described described changeable flow Master Control Unit is used for the unsteady flow amount control of unit.
3. as claims 2 described earth source heat pump generator set controllers, it is characterized in that: described room temperature collecting unit, be used to gather the design temperature of room temperature and input, pass to the changeable flow Master Control Unit and pass to middle RS485 communication module in the total unit of changeable flow by the RS485 communication module.
4. as claims 2 described earth source heat pump generator set controllers, it is characterized in that: described described changeable flow Master Control Unit comprises that further centralized control unit, RS485 communication module, GPRS transceiver module, cold acquisition module, hot water circulating pump start-stop, power supply are supplied with and current/voltage detection module, heat pump unit, water source pump frequency conversion module and air conditioner water frequency-variable module;
Described centralized control unit, further comprise, A/D analog-to-digital conversion module, 2 I/O input/output modules, 1 stepper drive are mainly used in control RS485 communication module, GPRS transceiver module, cold acquisition module, hot water circulating pump start-stop, power supply supply and current/voltage detection module, heat pump unit, water source pump frequency conversion module and air conditioner water frequency-variable module 19;
Wherein, described RS485 communication module is used for receiving room temperature and the design temperature that temperature collecting cell RS485 communication module passes over, and passes to centralized control unit;
Described GPRS transceiver module, be used for receiving the operation information of unit and passing to host computer from centralized control unit, in the information communication of the carrying out of described and host computer, described information comprises operational factor and instruction, the operational factor of water source pump and the operational factor and the instruction of instruction and air-conditioning water pump of compressor;
Described cold and hot acquisition module, further comprise air-conditioning Inlet and outlet water temperature temperature collect module and flow collection module, described air-conditioning Inlet and outlet water acquisition module further comprises, places the temperature sensor on the air-conditioning inlet and outlet pipe, and described flow collection module further comprises flow sensor.
Described hot water circulating pump start-stop module is used for the productive life water;
Power supply is supplied with and the current/voltage detection module further comprises current detecting and isolated-phase buses electric current, calculates the electric current of compressor, water source pump and air-conditioning water pump according to described bus current, thereby calculates the consumed power of motor;
Described heat pump unit comprises that further compressor variable frequency module and four-way cross startup and frequency conversion that valve and electronic expansion valve module are used to control compressor;
Described water source pump frequency conversion module comprises that further 1 is followed water pump and 1 frequency converter, is used for the frequency conversion of water source pump;
Described air conditioner water frequency-variable module further comprises 1 water pump and 1 frequency converter, is used for the frequency conversion of air-conditioning water pump.
5. the control method of a changeable flow ground source heat pump unit is characterized in that: may further comprise the steps:
A, room temperature controller pass to the DSP master controller with information such as desired temperature, start-stops;
B, centralized control unit pass to host computer with the unit operation parameter by GPRS;
C, DSP according to room cooling and warming information start the frequency conversion heat pump unit, source variable frequency pump and air-conditioning variable frequency pump;
D, cold and hot amount collection and electric current and voltage acquisition module are gathered related data and are provided foundation for usefulness control;
E, heat pump unit, water pump module require control compressor and pump rotary speed according to DSP control;
F, DPS calculate contrast by usefulness and change the parameter adjustment pump rotary speed, allow the usefulness at different control points reach maximization;
G, energy recovery module controls hot water follow water pump at unit refrigerating state midwifery next time hot water alive.
6. as the control method of claims 5 described changeable flow ground source heat pump units, described steps A further may further comprise the steps:
Information such as A1, room temperature controller 21 set temperature value, start-stop;
Information such as A2, set temperature value, start-stop pass to RS485 communication module 22;
A3, RS485 communication module 22 pass to RS485 communication module 12 with information such as set temperature value, start-stops;
A4, RS485 communication module 12 pass to the DSP master controller with information such as set temperature value, start-stops.
7. as the control method of claims 5 described changeable flow ground source heat pump units, described step B further may further comprise the steps:
B1, heat pump unit, water circulating pump unit, source and the air-conditioner circulating water pump unit operational factor of gathering unit and water circulating pump;
B2, operational factor are delivered to the DSP control module
B3, be uploaded to host computer by GPRS.
8. as the control method of claims 5 described changeable flow ground source heat pump units, described step D further may further comprise the steps:
Inlet and outlet water acquisition module in D1, the cold and hot acquisition module is gathered the temperature of air-conditioning Inlet and outlet water, and calculates temperature difference Δ T;
Flow collection module in D2, the cold and hot acquisition module is gathered the specific discharge M of fluid in the air-conditioning duct;
The data that D3, basis collect are calculated the energy that unit produces
Q=CM Δ T (Q represents energy, C unit's specific heat);
The electric current and voltage of the electric current of D4, electric current and voltage acquisition module parsing unit, water source pump, air-conditioning water pump, and calculate unit consumed power W=IV=I1V1+I2V2+I3V3, wherein: I1, V1, I2, V2, I3, V3 be respectively compressor bank, the voltage and current of source water circulating pump and air-conditioner circulating water pump.
9. as the control method of claims 6 described changeable flow ground source heat pump units, described step F further may further comprise the steps:
F1, by gathering and calculating gained Q and W, calculate unit usefulness COP value, COP=Q/w;
F2, DPS use fuzzy control technology, calculate contrast by usefulness and change the parameter adjustment pump rotary speed, allow the usefulness at different control points reach maximum.
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Cited By (7)
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| CN102818337A (en) * | 2012-07-13 | 2012-12-12 | 华中科技大学 | Device for monitoring ground source heat pump system based on internet of things |
| CN103134124A (en) * | 2011-11-24 | 2013-06-05 | 王春刚 | Ground source heat pump system and control method thereof |
| CN103216921A (en) * | 2013-03-08 | 2013-07-24 | 天津美意空调设备销售有限公司 | Control device for ground source heat pump unit |
| CN103941678A (en) * | 2014-03-28 | 2014-07-23 | 中国科学院沈阳应用生态研究所 | Ground source heat pump system monitoring method and device |
| CN106247441A (en) * | 2016-08-08 | 2016-12-21 | 山东华旗新能源科技有限公司 | Heat pump energy-conserving control system and method |
| CN111426059A (en) * | 2020-04-29 | 2020-07-17 | 广东芬尼能源技术有限公司 | Control method and device of multi-unit parallel heat pump system |
| CN113266471A (en) * | 2021-05-27 | 2021-08-17 | 国电环境保护研究院有限公司 | Gas turbine inlet air temperature control system based on ground source heat pump and control method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103134124A (en) * | 2011-11-24 | 2013-06-05 | 王春刚 | Ground source heat pump system and control method thereof |
| CN102818337A (en) * | 2012-07-13 | 2012-12-12 | 华中科技大学 | Device for monitoring ground source heat pump system based on internet of things |
| CN102818337B (en) * | 2012-07-13 | 2014-10-29 | 华中科技大学 | Device for monitoring ground source heat pump system based on internet of things |
| CN103216921A (en) * | 2013-03-08 | 2013-07-24 | 天津美意空调设备销售有限公司 | Control device for ground source heat pump unit |
| CN103941678A (en) * | 2014-03-28 | 2014-07-23 | 中国科学院沈阳应用生态研究所 | Ground source heat pump system monitoring method and device |
| CN106247441A (en) * | 2016-08-08 | 2016-12-21 | 山东华旗新能源科技有限公司 | Heat pump energy-conserving control system and method |
| CN106247441B (en) * | 2016-08-08 | 2019-05-21 | 山东华旗新能源科技有限公司 | Heat pump energy-conserving control system and method |
| CN111426059A (en) * | 2020-04-29 | 2020-07-17 | 广东芬尼能源技术有限公司 | Control method and device of multi-unit parallel heat pump system |
| CN113266471A (en) * | 2021-05-27 | 2021-08-17 | 国电环境保护研究院有限公司 | Gas turbine inlet air temperature control system based on ground source heat pump and control method thereof |
| CN113266471B (en) * | 2021-05-27 | 2022-04-08 | 国电环境保护研究院有限公司 | Gas turbine inlet air temperature control system based on ground source heat pump and control method thereof |
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