CN210801383U - Solar heat pump energy storage heating system in alpine region - Google Patents
Solar heat pump energy storage heating system in alpine region Download PDFInfo
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- CN210801383U CN210801383U CN201921269897.2U CN201921269897U CN210801383U CN 210801383 U CN210801383 U CN 210801383U CN 201921269897 U CN201921269897 U CN 201921269897U CN 210801383 U CN210801383 U CN 210801383U
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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
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- 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
Abstract
A solar heat pump energy storage heating system in alpine regions belongs to the technical field of heat pump heating. The system comprises a compressor, a condenser, a filter, three electronic expansion valves, an economizer, a solar heat collecting plate, a gas-liquid separator and an evaporator, wherein all the components are communicated with one another through copper transmission pipelines to form a loop. The condenser is connected with the heat storage water tank through a water conveying pipeline, and the heat storage water tank is provided with a water inlet and a water outlet. Refrigerant freon flows through the transmission pipeline. The air energy is added to be used as an auxiliary heat source, so that the defect of intermittent solar energy supply is overcome. Meanwhile, the air-supplementing enthalpy-increasing device is arranged, so that the heating capacity of the system in a low-temperature environment is improved, the system can run efficiently and stably under cold working conditions in alpine regions, and the running efficiency of the system is improved; the heat storage water tank can provide heating and domestic water for users, and is a heat storage device at the same time, so that the heating requirement of the users at night is met.
Description
Technical Field
The utility model relates to a solar energy thermal-arrest is main, air can be for assisting to have the heating system that the tonifying qi increases the enthalpy and heat accumulation function concurrently, be a heat pump heating system who is applicable to alpine region, belong to heat pump heating technical field.
Background
At present, a heat pump heating system mainly utilizes the state change of a refrigerant in a compressor, a condenser, a throttling device and an evaporator so as to convert a low-level heat source into utilizable high-level heat energy and achieve the purposes of heating and energy saving. The air source heat pump is widely applied, but in cold regions, the outdoor environment temperature can be reduced to below 0 ℃ in winter, and at the moment, the air source heat pump has the problems of reduced heating capacity, low energy efficiency ratio and even incapability of running, and additional auxiliary heating equipment is needed. The solar heat pump can exert a good operation effect only in an area with sufficient illumination, and can only operate in the daytime, so that the daily heating requirement of a user cannot be met.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the solar heat pump energy storage heating system can use solar energy as a main energy source and air energy as an auxiliary energy source in alpine regions and can efficiently and stably operate.
The utility model provides a technical scheme that its technical problem adopted is: a solar heat pump energy storage heating system in alpine regions comprises a compressor (1), a condenser (2) and a heat storage water tank (12);
the heat storage water tank (12) is connected with the condenser (2) to form a circulating water path with closed circulation, and a water inlet (13) and a water outlet (14) are arranged on the heat storage water tank (12);
meanwhile, the condenser (2) also forms a refrigerant circulating pipeline; the refrigerant outlet of the condenser (2) is divided into three branches, one branch enters the solar heat collecting plate (5) through a first electronic expansion valve (8), one branch enters the evaporator (7) through a second electronic expansion valve (9), one branch enters the compressor (1) through a third electronic expansion valve (10) through the economizer (4), and the electronic expansion valves are arranged on the three branch pipelines and can control the opening degree;
the solar heat collecting plate (5) is connected with an inlet of the gas-liquid separator (6), and a liquid outlet of the gas-liquid separator (6) is connected with the first electronic expansion valve (8), so that liquid separated by the gas-liquid separator (6) circulates; the gas outlet of the gas-liquid separator (6) is connected with the air suction port of the compressor (1), and the exhaust port of the compressor (1) is connected with the condenser (2) to form circulation;
the evaporator (7) is connected with the inlet of the gas-liquid separator (6); the liquid outlet of the gas-liquid separator (6) is connected with a second electronic expansion valve (9);
the third electronic expansion valve (10) is connected with the inlet of the economizer (4), the refrigerant liquid outlet of the economizer (4) is connected with the air supplement port of the compressor (1), and the refrigerant liquid outlet of the economizer (4) is connected with the second electronic expansion valve (9) to form a cycle.
The liquid outlet of the refrigerant of the further economizer (4) is combined and converged with the liquid outlet of the gas-liquid separator (6).
The refrigerant flowing out of the solar heat collecting plate (5) and the evaporator (7) is converged into the compressor (1) through a pipeline to complete a working cycle. The condenser is connected with the heat storage water tank (12) to supply heat and domestic water for users and achieve the purpose of heat storage.
The utility model discloses an operating condition does: this technical scheme adopts is that boiling point temperature is less than the heat transfer medium of daily ambient temperature under the normality, under the sufficient condition of illumination daytime, absorbs the radiant energy of sun as the main energy, can absorb the energy of surrounding air simultaneously as solar panel's input energy, and the refrigerant that directly is shone gets into the compressor, reaches high temperature high pressure state, heats the water in the heat storage water tank through the condenser, for the user heats and provides domestic water, carries out the heat accumulation simultaneously. When night or insufficient sunlight is irradiated, the electronic expansion valve of the branch is opened, and the absorbed air can be used as an auxiliary heat source to maintain the normal operation of the heat pump system.
Further as the utility model discloses technical scheme's improvement, the condenser adopts coil pipe formula or flat heat exchanger.
Further conduct the utility model discloses technical scheme's improvement, in order to satisfy user's heating demand, hot water storage tank under the condition that construction conditions allowed, the selection volume is great as far as possible, still need set up the heat preservation, reduces calorific loss.
Further as the improvement of the technical proposal of the utility model, the outer wall surface of the solar heat collecting plate is coated with selective absorbing material.
Further conduct the utility model discloses technical scheme's improvement install the filter on the transmission pipeline of condenser export, can block impurity, the maintenance in the equipment later stage of being convenient for.
Further conduct the utility model discloses technical scheme's improvement has increased the device that the tonifying qi increases the enthalpy, including electronic expansion valve and economic ware, the ability of heating of lift system under low temperature environment.
Further conduct the utility model discloses technical scheme's improvement installs vapour and liquid separator on the transmission pipeline before getting into the compressor induction port, prevents to cause the liquid to hit to the compressor.
Further as the utility model discloses technical scheme's improvement, heat transfer medium be refrigerant freon, can confirm heat transfer medium's model according to specific demand.
The working mode of the system specifically includes as follows:
A. when the illumination is sufficient in the daytime:
a. the low-temperature and low-pressure gaseous refrigerant discharged from the solar heat collecting plate (5) passes through the gas-liquid separator (6), the low-temperature and low-pressure gaseous refrigerant enters the compressor (1) through the air suction port of the compressor (1), and a small amount of separated liquid refrigerant is connected with the first electronic expansion valve (8) and is sent to a loop for circulation again;
b. the low-temperature and low-pressure gas refrigerant is compressed by the compressor (1), the temperature and the pressure are increased rapidly, the gas refrigerant is changed into the high-temperature and high-pressure gas refrigerant, and the high-temperature and high-pressure gas refrigerant is discharged out of the compressor (1) through a discharge port of the compressor (1);
c. high-temperature and high-pressure gaseous refrigerant is sent into the condenser (2) through a transmission pipeline, and cold water in the heat storage water tank (12) is heated through the condenser (2) to increase the temperature of the cold water; the gaseous refrigerant is changed into a low-temperature and high-pressure liquid refrigerant after being released heat by the condenser (2);
d. the low-temperature and high-pressure liquid refrigerant is throttled and depressurized by a first electronic expansion valve (8) and then is changed into a low-temperature and low-pressure gas-liquid mixed refrigerant;
e. the low-temperature and low-pressure gas-liquid mixed refrigerant enters the solar heat collecting plate (5) to absorb heat and evaporate into low-temperature and low-pressure gas refrigerant, and then enters the compressor (1) through the gas-liquid separator (6) again, so that the low-temperature and low-pressure gas refrigerant continuously and circularly works.
B. At night or when the illumination is insufficient:
a. at night or when the illumination is insufficient, the heat storage water tank (12) starts to emit the stored heat to supply heat for users;
b. the low-temperature and high-pressure liquid refrigerant discharged from the condenser (2) is divided into three branches:
(1) part of liquid refrigerant enters a first electronic expansion valve (8) for throttling and depressurizing, then is changed into low-temperature and low-pressure gas-liquid mixed refrigerant, then enters a solar heat collecting plate (5) for absorbing heat and evaporating into low-temperature and low-pressure gas refrigerant, and enters the compressor (1) from a suction inlet of the compressor (1) through a gas-liquid separator (6);
(2) part of the liquid refrigerant is throttled and decompressed by a second electronic expansion valve (9) to become low-temperature and low-pressure gas-liquid mixed refrigerant, then enters an evaporator (7) to absorb heat in ambient air and is evaporated into low-temperature and low-pressure gaseous refrigerant, and the gaseous refrigerant enters the compressor (1) from a suction inlet of the compressor (1) through a gas-liquid separator (6);
(3) part of liquid refrigerant is throttled and decompressed by a third electronic expansion valve (10) to become low-temperature and low-pressure gas-liquid mixed refrigerant, then the low-temperature and low-pressure gas-liquid mixed refrigerant enters an economizer (4), the refrigerant is divided into two parts in the economizer (4), one part of the refrigerant is throttled and the pressure is reduced again, the liquid refrigerant is changed into gas, the gas refrigerant is sent into a compressor (1) through an air supplement port of the compressor (1) through a transmission pipeline to achieve the purpose of supplementing air and increasing enthalpy, and the other part of cooled liquid refrigerant and the liquid refrigerant separated from a gas-liquid separator are sent into a branch of a second electronic expansion valve (9) or the third electronic expansion valve (10) through the transmission pipeline to be circulated again;
c. gaseous refrigerants of the three branches are mixed and compressed in the compressor, the temperature and the pressure are increased rapidly, and the gaseous refrigerants which are changed into high-temperature and high-pressure refrigerant gas are discharged out of the compressor (1) through a discharge port of the compressor (1);
d. high-temperature and high-pressure gaseous refrigerant is sent into the condenser (2) through a transmission pipeline, cold water in the heat storage water tank (12) is heated through the condenser (2), the temperature of the cold water is increased, the gaseous refrigerant is changed into low-temperature and high-pressure liquid refrigerant after being released heat through the condenser (2), and the low-temperature and high-pressure liquid refrigerant is discharged out of the condenser, so that the continuous cycle work is realized.
The system has the advantages that: the air energy is added to be used as an auxiliary heat source, so that the defect of intermittent solar energy supply is overcome. Meanwhile, the air-supplementing enthalpy-increasing device is arranged, so that the heating capacity of the system in a low-temperature environment is improved, the system can run efficiently and stably under cold working conditions in alpine regions, and the running efficiency of the system is improved; the heat storage water tank can provide heating and domestic water for users, and is a heat storage device at the same time, so that the heating requirement of the users at night is met. Meanwhile, the system can control the temperature of the heat storage water tank (12) to be maintained at a constant high temperature.
Drawings
Fig. 1 is a schematic structural diagram of the system.
In the figure: 1. a compressor; 2. a condenser; 3. a filter; 4. an economizer; 5. a solar collector panel; 6. a gas-liquid separator; 7. an evaporator; 8. a first electronic expansion valve; 9. a second electronic expansion valve; 10. a third electronic expansion valve; 11. a transmission channel; 12. a heat storage water tank; 13. a water inlet; 14. a water outlet; 15. a water delivery pipeline.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.
Example 1
The utility model discloses a solar thermal energy pump energy storage heating system in severe cold district, its structure refers to fig. 1, and it includes compressor 1, condenser 2, filter 3, economic ware 4, solar panel 5, vapour and liquid separator 6, evaporimeter 7 (the evaporimeter is the air heat source evaporimeter, the air that is atmospheric environment temperature of adoption), first, second, third electronic expansion valve 8, 9, 10, above-mentioned all parts communicate the formation return circuit each other through copper transmission pipeline 11. The condenser 2 can select a coil pipe type or plate type heat exchanger according to actual conditions, the condenser 2 is connected with the heat storage water tank 12 through a water conveying pipeline 15, and the heat storage water tank 12 is provided with a water inlet 13 and a water outlet 14. The outer wall surface of the solar heat collecting plate 5 is coated with selective absorbing material. The heat transfer medium circulating in the pipeline is refrigerant Freon, and the model can be selected according to actual requirements.
The utility model discloses a concrete working method:
A. when the illumination is sufficient in the daytime:
a. the low-temperature and low-pressure gaseous refrigerant discharged from the solar heat collecting plate 5 passes through the gas-liquid separator 6, the low-temperature and low-pressure gaseous refrigerant enters the compressor 1 through the air suction port of the compressor 1, and a small amount of separated liquid refrigerant is sent into a loop through a copper transmission pipeline for circulation again;
b. the low-temperature and low-pressure gas refrigerant is compressed by the compressor 1, the temperature and the pressure are increased rapidly, the high-temperature and high-pressure gas refrigerant is changed into the high-temperature and high-pressure gas refrigerant, and the high-temperature and high-pressure gas refrigerant is discharged out of the compressor 1 through a discharge port of the compressor 1;
c. the high-temperature and high-pressure gaseous refrigerant is sent into the condenser 2 through the copper transmission pipeline 11, the cold water in the heat storage water tank 12 is heated through the condenser 2, the temperature of the cold water is increased, the cold water is kept at 65 ℃ (the temperature of the outdoor environment is-15 ℃), and the gaseous refrigerant is changed into a low-temperature and high-pressure liquid refrigerant after heat release through the condenser 2;
d. the low-temperature and high-pressure liquid refrigerant is throttled and depressurized by the first electronic expansion valve 8 to become a low-temperature and low-pressure gas-liquid mixed refrigerant;
e. the low-temperature and low-pressure gas-liquid mixed refrigerant enters the solar heat collecting plate 5 to absorb heat and evaporate into a low-temperature and low-pressure gas refrigerant, and then enters the compressor 1 through the gas-liquid separator 6, so that the low-temperature and low-pressure gas refrigerant continuously and circularly works.
B. At night or when the illumination is insufficient:
a. at night or when the illumination is insufficient, the heat storage water tank 12 starts to emit the stored heat to supply heat for users;
b. the low temperature, high pressure liquid refrigerant exiting the condenser 2 will be divided into three branches: (1) part of liquid refrigerant enters the first electronic expansion valve 8 for throttling and pressure reduction, then is changed into low-temperature and low-pressure gas-liquid mixed refrigerant, then enters the solar heat collecting plate 5 for absorbing heat and evaporating into low-temperature and low-pressure gas refrigerant, and enters the compressor 1 from the suction inlet of the compressor 1 through the gas-liquid separator 6; (2) part of the liquid refrigerant is throttled and decompressed by the second electronic expansion valve 9 to become low-temperature and low-pressure gas-liquid mixed refrigerant, then enters the evaporator 7 to absorb the heat of the surrounding air and is evaporated into low-temperature and low-pressure gaseous refrigerant, and the gaseous refrigerant enters the compressor 1 from the suction inlet of the compressor 1 through the gas-liquid separator 6; (3) part of the liquid refrigerant is throttled and depressurized by the third electronic expansion valve 10 to become low-temperature and low-pressure gas-liquid mixed refrigerant, and then enters the economizer 4, the refrigerant is divided into two parts in the economizer 4, one part of the refrigerant is throttled and depressurized again, the liquid refrigerant is changed into gas, the gas refrigerant is fed into the compressor 1 through a gas supplementing port of the compressor 1 through a transmission pipeline, the purpose of supplementing gas and increasing enthalpy is achieved, and the other part of the cooled liquid refrigerant and the liquid refrigerant separated from the gas-liquid separator are fed into a loop through a copper transmission pipeline and are circulated again;
c. the gaseous refrigerant of the three branches is mixed and compressed in the compressor, the temperature and the pressure are increased rapidly, and the gaseous refrigerant is changed into high-temperature and high-pressure refrigerant gas which is discharged out of the compressor 1 through a discharge port of the compressor 1;
d. the high-temperature and high-pressure gaseous refrigerant is sent into the condenser 2 through the copper transmission pipeline 11, the cold water in the heat storage water tank 12 is heated through the condenser 2, the temperature of the cold water is increased, the cold water is kept at 65 ℃ (the temperature of the outdoor environment is-25 ℃), the gaseous refrigerant is changed into a low-temperature and high-pressure liquid refrigerant after heat release of the condenser 2, the low-temperature and high-pressure liquid refrigerant is discharged out of the condenser, and the cycle work is performed continuously.
Of course, the above description is only used to describe the technical solution of the present invention, and not to limit it; those skilled in the art may make improvements and modifications to the above-described solution without departing from the scope of the invention as defined by the claims.
Claims (8)
1. A solar heat pump energy storage heating system in alpine regions is characterized by comprising a compressor (1), a condenser (2) and a heat storage water tank (12);
the heat storage water tank (12) is connected with the condenser (2) to form a circulating water path with closed circulation, and a water inlet (13) and a water outlet (14) are arranged on the heat storage water tank (12);
meanwhile, the condenser (2) also forms a refrigerant circulating pipeline; the refrigerant outlet of the condenser (2) is divided into three branches, one branch enters the solar heat collecting plate (5) through a first electronic expansion valve (8), one branch enters the evaporator (7) through a second electronic expansion valve (9), one branch enters the compressor (1) through a third electronic expansion valve (10) through the economizer (4), and the electronic expansion valves are arranged on the three branch pipelines and can control the opening degree;
the solar heat collecting plate (5) is connected with an inlet of the gas-liquid separator (6), and a liquid outlet of the gas-liquid separator (6) is connected with the first electronic expansion valve (8), so that liquid separated by the gas-liquid separator (6) circulates; the gas outlet of the gas-liquid separator (6) is connected with the air suction port of the compressor (1), and the exhaust port of the compressor (1) is connected with the condenser (2) to form circulation;
the evaporator (7) is connected with the inlet of the gas-liquid separator (6); the liquid outlet of the gas-liquid separator (6) is connected with a second electronic expansion valve (9);
the third electronic expansion valve (10) is connected with the inlet of the economizer (4), the refrigerant liquid outlet of the economizer (4) is connected with the air supplement port of the compressor (1), and the refrigerant liquid outlet of the economizer (4) is connected with the second electronic expansion valve (9) to form a cycle.
2. The solar heat pump energy storage heating system for the alpine regions according to claim 1, wherein the liquid outlet of the refrigerant of the economizer (4) and the liquid outlet of the gas-liquid separator (6) are merged and converged together.
3. The solar heat pump energy storage heating system for the alpine regions according to claim 1, wherein the refrigerant flowing out of the solar heat collection plate (5) and the evaporator (7) is converged into the compressor (1) through a pipeline to complete a working cycle; the condenser is connected with the heat storage water tank (12) to supply heat and domestic water for users and achieve the purpose of heat storage.
4. The solar heat pump energy storage heating system for the alpine region according to claim 1, wherein the condenser adopts a coil type or flat plate type heat exchanger.
5. The solar heat pump energy storage heating system in the alpine region according to claim 1, wherein the heat storage water tank is provided with an insulating layer to reduce heat loss.
6. A solar heat pump energy storage heating system in alpine regions according to claim 1, wherein the outer wall surface of the solar heat collecting plate is coated with a selective absorbing material.
7. The solar heat pump energy storage heating system in the alpine region according to claim 1, wherein a filter is installed on the transmission pipeline at the outlet of the condenser, so that impurities can be blocked, and later maintenance of equipment is facilitated.
8. A solar heat pump energy storage heating system in alpine regions according to claim 1, characterized in that the refrigerant is freon, and the type of the heat transfer medium is determined according to specific requirements.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921269897.2U CN210801383U (en) | 2019-08-06 | 2019-08-06 | Solar heat pump energy storage heating system in alpine region |
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| CN201921269897.2U CN210801383U (en) | 2019-08-06 | 2019-08-06 | Solar heat pump energy storage heating system in alpine region |
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| CN210801383U true CN210801383U (en) | 2020-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513759A (en) * | 2019-08-06 | 2019-11-29 | 北京君辉新能源技术有限公司 | A kind of extremely frigid zones solar heat pump energy storage heating system and the method for operation |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513759A (en) * | 2019-08-06 | 2019-11-29 | 北京君辉新能源技术有限公司 | A kind of extremely frigid zones solar heat pump energy storage heating system and the method for operation |
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