CN112413908A - Double-heat-compensation multi-source heat pump coupling energy supply system - Google Patents
Double-heat-compensation multi-source heat pump coupling energy supply system Download PDFInfo
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- CN112413908A CN112413908A CN202011336438.9A CN202011336438A CN112413908A CN 112413908 A CN112413908 A CN 112413908A CN 202011336438 A CN202011336438 A CN 202011336438A CN 112413908 A CN112413908 A CN 112413908A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a double-heat-compensation multi-source heat pump coupling energy supply system, which is characterized in that: the water outlet of the solar heat collector is connected with the inlet of the first circulating pump, the outlet of the first circulating pump is connected with the water inlet of the heat storage water tank, the water outlet of the heat storage water tank is connected with the hot water inlet of the plate heat exchanger, the fin heat exchanger is fixed in the heat source tower, the cold water inlet of the plate heat exchanger is connected with the cold water outlet of the fin heat exchanger, the hot water outlet of the plate heat exchanger is connected with the water inlet of the evaporator, the water outlet of the evaporator is connected with the inlet of the second circulating pump, the hot water inlet of the fin heat exchanger is respectively connected with the second circulating pump and the outlet of the third circulating pump, the inlet of the third circulating pump is connected with the outlet of the ground source side heat exchanger. The solar energy auxiliary double-source heat pump system is adopted, and effective complementary utilization of energy is achieved.
Description
Technical Field
The invention belongs to the technical field of renewable energy utilization, and particularly relates to a double-heat-compensation multi-source heat pump coupling energy supply system.
Background
There are various natural energies of low grade in nature, and they exist in air, soil, underground water, and the like. The natural energy directly affects the performance of the heat pump when being used as a cold source and a heat source due to different temperatures and different utilization modes. The air source heat pump scheme has the advantages of stable operation, high energy utilization rate, small occupied area, environmental protection and the like, is widely applied, but is greatly influenced by outdoor air state parameters, and has a serious frosting problem during heating in winter. The ground source heat pump has the advantages of energy conservation, environmental protection, high energy utilization and the like, but the efficiency is restricted by the problems of soil environment, soil texture and the like, and the initial investment is higher.
Therefore, aiming at the problem of frosting of the air source heat pump, the heat source tower is adopted to replace an air heat exchanger, the heat source tower can be used as a cooling tower in summer, the antifreezing medium is utilized to absorb low-grade heat energy from the low-temperature environment in winter to supply heat, and the heat source tower is adopted to supplement heat for the buried pipe in transitional seasons. Since the performance of the heat pump system is seriously influenced by the temperature change of the cold and heat source sides (air and soil), the solar-assisted heat pump heating is an effective method for solving the problem. Therefore, the system develops a multi-source heat pump coupling system by complementary utilization of solar energy, air energy and geothermal energy, supplements heat to the buried pipe by the aid of the solar energy and the air energy in transitional seasons, and realizes stable and efficient operation all the year around.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a double-heat-compensation multi-source heat pump coupling energy supply system.
The utility model provides a two heat supply multiple source heat pump coupling energy supply systems, includes solar collector, evaporimeter, condenser, heat source tower, its characterized in that: the water outlet of the solar heat collector is connected with the inlet of a first circulating pump, the outlet of the first circulating pump is connected with the water inlet of a heat storage water tank, the water outlet of the heat storage water tank is connected with the hot water inlet of a plate heat exchanger, the cold water outlet of the plate heat exchanger is connected with the water inlet of the solar heat collector, a fin heat exchanger is fixed in the heat source tower, the cold water inlet of the plate heat exchanger is connected with the cold water outlet of the fin heat exchanger, the hot water outlet of the plate heat exchanger is connected with the water inlet of an evaporator, the water outlet of the evaporator is connected with the inlet of a second circulating pump, the hot water inlet of the fin heat exchanger is respectively connected with the outlets of a second circulating pump and a third circulating pump, the inlet of the third circulating pump is connected with the outlet of a ground source side heat exchanger, and, the working medium import of evaporimeter is connected with the first end of expansion valve, the second end of expansion valve is connected with the working medium export of condenser, the working medium import of condenser is connected with the working medium export of compressor, the working medium import of compressor is connected with the working medium export of evaporimeter, the delivery port of condenser is connected with the import of fourth circulating pump, the export of fourth circulating pump is connected with hot user's water supply port, hot user's return water mouth is connected with the water inlet of condenser, the water supply port of heat storage water tank is connected with the import of fifth circulating pump, the export of fifth circulating pump is connected with hot user's water supply port, hot user's return water mouth is connected with heat storage water tank's return water mouth.
Preferably, the water inlet and the water outlet of the heat storage water tank are in short connection through a water tank short connecting pipe.
Preferably, the water inlet and the water outlet of the evaporator are in short connection through an evaporator short-circuiting pipe.
Preferably, an axial flow fan is fixed at the top of the heat source tower, a solution absorber and a spraying device are arranged at the upper part of the heat source tower, a hot air outlet pipe is arranged at the lower part of the heat source tower, a spraying tank is arranged at the bottom of the heat source tower, the spraying tank is connected with an inlet of a sixth circulating pump, and an outlet of the sixth circulating pump is connected with the spraying device.
Compared with the prior art, the invention has the beneficial effects that:
1. the solar energy auxiliary double-source heat pump system combines natural solar energy, air energy and geothermal energy, the air energy and the geothermal energy can be simultaneously or independently used as cold and heat sources of a heat pump unit, the air energy and the geothermal energy are preheated by the solar energy, effective complementary utilization of energy is realized, the performance of the heat pump unit is improved, the unit is enabled to operate efficiently and stably, and the system is energy-saving and environment-friendly.
2. The double heat supplementing system combines the solar heat collecting system and the heat pump unit through the plate heat exchanger, and utilizes solar energy and air energy to realize simultaneous or independent heat supplementation on the heat exchanger on the ground source side, thereby being beneficial to maintaining the stability of soil and ensuring the always high-efficiency operation of the heat pump unit.
3. The heat source tower is used as a cooling tower in summer, the heat radiating efficiency of the heat pump unit is improved, low-grade heat energy is extracted from the nature as a heat source of the heat pump unit in winter, the heat exchange efficiency is high compared with that of a traditional air heat exchange unit, the frosting problem is avoided, heat can be supplemented to the ground source side heat exchanger in transition seasons of the heat source tower, and refrigeration, heat supply and heat supplementation can be achieved with one machine for three purposes.
Drawings
FIG. 1 is a system flow chart of a double-heat-compensation multi-source heat pump coupling energy supply system according to the present invention;
FIG. 2 is a system flow diagram of the present invention in a transitional season with supplemental heat;
FIG. 3 is a schematic view of the heat source tower of the present invention.
In the figure, the solar heat collector 1, the solar heat collector 2, the heat storage water tank 3, the plate heat exchanger 4, the evaporator 5, the condenser 6, the compressor 7, the expansion valve 8, the heat source tower 9, the ground source side heat exchanger 10, the heat consumer 11, the first circulating pump 12, the second circulating pump 13, the third circulating pump 14, the fourth circulating pump 15, the fifth circulating pump 16, the sixth circulating pump 17, the axial flow fan 18, the solution absorber 19, the spray device 20, the fin heat exchanger 21, the spray tank 22, and the hot air outlet pipe.
Detailed Description
Referring to fig. 1, fig. 2 and fig. 3, a double-heat-compensation multi-source heat pump coupling energy supply system includes a solar heat collector 1, an evaporator 4, a condenser 5 and a heat source tower 8, and is characterized in that: the water outlet of the solar heat collector 1 is connected with the inlet of a first circulating pump 11, the outlet of the first circulating pump 11 is connected with the water inlet of a heat storage water tank 2, the water outlet of the heat storage water tank 2 is connected with the hot water inlet of a plate heat exchanger 3, the cold water outlet of the plate heat exchanger 3 is connected with the water inlet of the solar heat collector 1, a fin heat exchanger 20 is fixed in the heat source tower 8, the cold water inlet of the plate heat exchanger 3 is connected with the cold water outlet of the fin heat exchanger 20, the hot water outlet of the plate heat exchanger 3 is connected with the water inlet of an evaporator 4, the water outlet of the evaporator 4 is connected with the inlet of a second circulating pump 12, the hot water inlet of the fin heat exchanger 20 is respectively connected with the outlets of the second circulating pump 12 and a third circulating pump 13, the inlet of the third circulating pump 13 is, the inlet of the ground source side heat exchanger 9 is connected with the cold water outlet of the fin heat exchanger 20, the working medium inlet of the evaporator 4 is connected with the first end of the expansion valve 7, the second end of the expansion valve 7 is connected with a working medium outlet of the condenser 5, a working medium inlet of the condenser 5 is connected with a working medium outlet of the compressor 6, the working medium inlet of the compressor 6 is connected with the working medium outlet of the evaporator 4, the water outlet of the condenser 5 is connected with the inlet of the fourth circulating pump 14, the outlet of the fourth circulation pump 14 is connected with the water supply inlet of the heat consumer 10, the water return inlet of the heat consumer 10 is connected with the water inlet of the condenser 5, the water supply port of the hot water storage tank 2 is connected with the inlet of a fifth circulating pump 15, the outlet of the fifth circulating pump 15 is connected with the water supply port of the hot user 10, and the water return port of the hot user 10 is connected with the water return port of the hot water storage tank 2.
And the water inlet and the water outlet of the heat storage water tank 2 are in short connection through a water tank short connecting pipe.
And the water inlet and the water outlet of the evaporator 4 are in short connection through an evaporator short connecting pipe.
An axial flow fan 17 is fixed at the top of the heat source tower 8, a solution absorber 18 and a spraying device 19 are arranged at the upper part of the heat source tower 8, a hot air outlet pipe 22 is arranged at the lower part of the heat source tower 8, a spraying tank 21 is arranged at the bottom of the heat source tower 8, the spraying tank 21 is connected with an inlet of a sixth circulating pump 16, and an outlet of the sixth circulating pump 16 is connected with the spraying device 19.
The working principle of the invention is as follows:
when the solar energy-saving heat pump runs in winter, solar energy is preferentially utilized to supply energy to heat users. In the daytime, when solar radiation is strong, high-temperature water generated by the solar heat collector 1 firstly enters the heat storage water tank 2 to supply heat to a heat user 10 or provide domestic hot water, then flows into the plate heat exchanger 3, exchanges heat with fluid on the side of the evaporator 4 of the heat pump unit, and then returns to the solar heat collector 1; when solar radiation is weak, high-temperature water generated by the solar heat collector 1 directly enters the plate heat exchanger 3 through the water tank short connecting pipe for heat exchange. When the solar energy is insufficient, the double-source heat pump unit is started. And simultaneously starting the heat source tower 8 or the ground source side heat exchanger 9 according to the environmental temperature or load requirements, preheating the antifreezing medium flowing out of the heat source tower 8 or the ground source side heat exchanger 9 through the plate heat exchanger 3, then entering a heat pump unit, exchanging heat through the evaporator 4, and then returning to the heat source tower 8 or the ground source side heat exchanger 9.
When the solar water heater operates in summer, the solar heat collector 1 receives solar radiation, generates high-temperature water, and the high-temperature water enters the heat storage water tank 2 to provide domestic hot water for a heat user 10. The heat pump unit can select the heat source tower 8 or the ground source side heat exchanger 9 or both to dissipate heat according to the load condition so as to supply cold for the heat consumer 10.
When the solar heat collector operates under the heat supplementing working condition in the transition season, the heat pump unit stops operating in the transition season, and the solar heat collector 1 system and the heat source tower 8 heat supplementing system are started. When solar radiation is strong in the daytime, high-temperature water generated by the solar heat collector 1 firstly enters the heat storage water tank 2 to provide domestic hot water for a heat user 10, then flows into the plate heat exchanger 3, and carries heat to the ground source side for soil heat supplement through heat exchange with fluid flowing out of the ground source side heat exchanger 9. In the daytime, when the solar radiation is weak, high-temperature water generated by the solar heat collector 1 directly enters the plate heat exchanger 3 through the water tank short connecting pipe, and the solar energy is used for supplementing heat for the ground source side heat exchanger 9. And meanwhile, selectively starting the heat source tower 8 according to the user requirement to supplement heat for the ground source side heat exchanger 9. The solar energy heat compensation and the heat source tower 8 heat compensation can be carried out simultaneously or independently.
Technical solution of the invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive method concept and technical solution, or to apply the inventive concept and technical solution to other occasions without modification.
Claims (2)
1. The utility model provides a two heat supply multiple source heat pump coupling energy supply systems, mainly includes solar collector (1), evaporimeter (4), condenser (5), heat source tower (8), its characterized in that: the solar heat collector is characterized in that a water outlet of the solar heat collector (1) is connected with an inlet of a first circulating pump (11), an outlet of the first circulating pump (11) is connected with a water inlet of a heat storage water tank (2), a water outlet of the heat storage water tank (2) is connected with a hot water inlet of a plate heat exchanger (3), a cold water outlet of the plate heat exchanger (3) is connected with a water inlet of the solar heat collector (1), a fin heat exchanger (20) is fixed in a heat source tower (8), the cold water inlet of the plate heat exchanger (3) is connected with the cold water outlet of the fin heat exchanger (20), the hot water outlet of the plate heat exchanger (3) is connected with a water inlet of an evaporator (4), a water outlet of the evaporator (4) is connected with an inlet of a second circulating pump (12), and the hot water inlet of the fin heat exchanger (20) is respectively connected with, The outlet of a third circulating pump (13) is connected, the inlet of the third circulating pump (13) is connected with the outlet of a ground source side heat exchanger (9), the inlet of the ground source side heat exchanger (9) is connected with the cold water outlet of a fin heat exchanger (20), the working medium inlet of an evaporator (4) is connected with the first end of an expansion valve (7), the second end of the expansion valve (7) is connected with the working medium outlet of a condenser (5), the working medium inlet of the condenser (5) is connected with the working medium outlet of a compressor (6), the working medium inlet of the compressor (6) is connected with the working medium outlet of the evaporator (4), the water outlet of the condenser (5) is connected with the inlet of a fourth circulating pump (14), the outlet of the fourth circulating pump (14) is connected with the water supply port of a heat consumer (10), and the water return port of the heat consumer (10) is connected with the water inlet of the condenser (5), a water supply port of the heat storage water tank (2) is connected with an inlet of a fifth circulating pump (15), an outlet of the fifth circulating pump (15) is connected with a water supply port of a heat consumer (10), and a water return port of the heat consumer (10) is connected with a water return port of the heat storage water tank (2);
the water inlet and the water outlet of the heat storage water tank (2) are in short connection through a water tank short connecting pipe;
the water inlet and the water outlet of the evaporator (4) are in short connection through an evaporator short-circuiting pipe.
2. The dual-heat-compensation multi-source heat pump coupled energy supply system of claim 1, wherein: an axial flow fan (17) is fixed to the top of the heat source tower (8), a solution absorber (18) and a spraying device (19) are arranged on the upper portion of the heat source tower (8), a hot air outlet pipe (22) is arranged on the lower portion of the heat source tower (8), a spraying pool (21) is arranged at the bottom of the heat source tower (8), the spraying pool (21) is connected with an inlet of a sixth circulating pump (16), and an outlet of the sixth circulating pump (16) is connected with the spraying device (19).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011336438.9A CN112413908A (en) | 2020-11-25 | 2020-11-25 | Double-heat-compensation multi-source heat pump coupling energy supply system |
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| CN202011336438.9A CN112413908A (en) | 2020-11-25 | 2020-11-25 | Double-heat-compensation multi-source heat pump coupling energy supply system |
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| CN112413908A true CN112413908A (en) | 2021-02-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101008537A (en) * | 2007-01-11 | 2007-08-01 | 清华大学 | Integrated air-conditioning system of solar-assisted soil source CO2 trans-critical heat pump |
| CN102927605A (en) * | 2012-11-09 | 2013-02-13 | 沈阳建筑大学 | Solar energy-ground source heat pump and heat supply network complementary heating device |
| KR20150078380A (en) * | 2013-12-30 | 2015-07-08 | 주식회사 케이디파워 | Cooling and heating system using ground source |
| CN105276833A (en) * | 2015-11-10 | 2016-01-27 | 浙江大学 | Solar water heating system and heat pump heating and refrigerating system and method thereof |
| CN208382427U (en) * | 2018-04-13 | 2019-01-15 | 中节能先导城市节能有限公司 | Underground pipe heat balance system and buried pipe ground-source heat pump system |
-
2020
- 2020-11-25 CN CN202011336438.9A patent/CN112413908A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101008537A (en) * | 2007-01-11 | 2007-08-01 | 清华大学 | Integrated air-conditioning system of solar-assisted soil source CO2 trans-critical heat pump |
| CN102927605A (en) * | 2012-11-09 | 2013-02-13 | 沈阳建筑大学 | Solar energy-ground source heat pump and heat supply network complementary heating device |
| KR20150078380A (en) * | 2013-12-30 | 2015-07-08 | 주식회사 케이디파워 | Cooling and heating system using ground source |
| CN105276833A (en) * | 2015-11-10 | 2016-01-27 | 浙江大学 | Solar water heating system and heat pump heating and refrigerating system and method thereof |
| CN208382427U (en) * | 2018-04-13 | 2019-01-15 | 中节能先导城市节能有限公司 | Underground pipe heat balance system and buried pipe ground-source heat pump system |
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Application publication date: 20210226 |
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