CN111735157A - Carbon dioxide heat pump air-conditioning system based on solar power generation defrosting - Google Patents
Carbon dioxide heat pump air-conditioning system based on solar power generation defrosting Download PDFInfo
- Publication number
- CN111735157A CN111735157A CN201910224828.8A CN201910224828A CN111735157A CN 111735157 A CN111735157 A CN 111735157A CN 201910224828 A CN201910224828 A CN 201910224828A CN 111735157 A CN111735157 A CN 111735157A
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- China
- Prior art keywords
- carbon dioxide
- defrosting
- heat pump
- pump air
- conditioning system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000010257 thawing Methods 0.000 title claims abstract description 28
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 25
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 25
- 238000004378 air conditioning Methods 0.000 title claims abstract description 23
- 238000010248 power generation Methods 0.000 title claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims abstract description 7
- 230000002708 enhancing effect Effects 0.000 claims abstract description 4
- 230000007613 environmental effect Effects 0.000 claims abstract description 4
- 238000004146 energy storage Methods 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000005057 refrigeration Methods 0.000 claims description 2
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 238000005286 illumination Methods 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
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
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
-
- 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
- F24F2005/0039—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 using a cryogen, e.g. CO2 liquid or N2 liquid
Abstract
The invention discloses a carbon dioxide heat pump air-conditioning system based on solar power generation defrosting, which comprises a solar power generation system and the carbon dioxide heat pump air-conditioning system, wherein the solar power generation system comprises a solar cell panel, a power storage device, an LED lamp and a defrosting device, solar power is utilized for generating power, and defrosting and lighting are reasonably distributed through the power storage device. The carbon dioxide heat pump air conditioning system comprises an evaporator, a condenser, an expansion valve and a compressor, wherein the evaporator and the condenser are provided with a pulse heat pipe with a communication channel to strengthen the heating effect in winter and the refrigerating effect in summer. The invention uses carbon dioxide as a working medium, and has the advantages of energy saving, environmental protection and low operation cost. The condenser and the evaporator adopt pulsating heat pipes with communicated structures, and the system mainly has breakthroughs in two aspects: firstly, the communication structure of the pulsating heat pipe is optimized, and the effect of enhancing heat transfer is achieved; and secondly, the change of the placement inclination angle of the pulsating heat pipe can meet the requirements of complex and variable working environments. Therefore, the invention can reduce the power consumption of the whole air conditioner, increase the heat exchange efficiency, improve the energy utilization rate and realize energy conservation and emission reduction.
Description
Technical Field
The invention relates to the field of new energy utilization, in particular to a pulsating heat pipe and carbon dioxide heat pump air conditioning system based on solar power generation defrosting and provided with a communication channel.
Background
Along with the continuous development of society, the living standard of people is increasingly improved, and the air conditioner provides refreshing in hot summer and can also heat in cold winter, so the air conditioner is more and more important in life. However, when the air-conditioning heat pump unit is operated in winter for heating, the outdoor fin heat exchange tube is frosted when the surface temperature is lower than the dew point temperature of the atmosphere, and the phenomenon is particularly serious when the relative humidity is high. When the frost layer on the surface of the finned tube reaches a certain thickness, the thermal resistance and the wind side resistance of the heat exchange tube can be increased, the operating efficiency of the air-cooled heat pump unit is greatly reduced, the heat exchange quantity is reduced, and the energy consumption is increased.
The existing defrosting technology is generally provided with a heating rod beside a condenser for electrifying and heating, and although the defrosting technology can solve the problem of frosting of an air conditioner to different degrees, the energy source is still not fully utilized, so that the solar energy is adopted for power generation, the energy consumption in the defrosting process of the air conditioner is reduced, and the energy-saving and environment-friendly effects are achieved.
Disclosure of Invention
The invention aims to provide a carbon dioxide heat pump air-conditioning system based on solar power generation defrosting. The evaporator and the condenser of the air conditioner adopt pulsating heat pipes with connecting passages, so that heat transfer is realized, and the energy consumption of the air conditioner is reduced.
In order to achieve the above object, the invention provides the following technical solutions: the utility model provides a carbon dioxide heat pump air conditioning system based on solar energy power generation defrosting which characterized in that: the solar power distribution system consists of solar energy, an energy storage device, a pressure sensor, an electric heating defrosting device and an LED lamp, and achieves defrosting and lighting effects; the carbon dioxide heat pump air-conditioning system consists of an outdoor unit, an expansion valve and an indoor unit, wherein the indoor unit and the outdoor unit are both provided with a communicating pulsating heat pipe, and the refrigerating and heating efficiency of the heat pump air-conditioning is enhanced. A carbon dioxide heat pump air-conditioning system for solar power generation and defrosting is characterized in that power generation, power storage and electric defrosting regulation and control are realized by a solar cell panel, a power storage device, a pressure sensor and a defrosting device respectively.
The pressure sensor detects the air pressure difference between the front and the back of the outdoor heat exchanger, and when the pressure difference reaches a certain value, the electric heating defrosting device is started to defrost the finned tube.
The carbon dioxide-based heat pump air conditioning system is characterized in that the working medium adopts carbon dioxide, energy consumption is saved, the environment is protected, the evaporator and the condenser are loaded with the pulsating heat pipe system, self-excitation alternating oscillation can be realized, efficient heat exchange is realized, and the air conditioning performance is improved.
The pulsating heat pipe system is provided with a communication path structure and is characterized in that: firstly, the communication structure of the pulsating heat pipe is optimized, and the effect of enhancing heat transfer is achieved; secondly, the pulsating heat pipe is placed at a certain angle, so that the environment adaptability is strong.
The solar power distribution system is characterized in that the illumination effect is realized through the LED lamps, and the utilization efficiency of energy is improved.
The gain effect of the invention: (1) the solar power generation defrosting and carbon dioxide heat pump air conditioning system utilizes solar power generation to store electric energy in the energy storage device, and defrosting of the air conditioner in winter is realized through control of the pressure sensor. (2) The solar cell panel is used for generating electricity, new energy is used, the energy utilization rate is improved, and energy conservation and emission reduction are realized. (3) The refrigerant of the invention uses carbon dioxide as a working medium, has the characteristics of no toxicity, no pollution, energy conservation, environmental protection and low operation cost, and is an ideal refrigerant. (4) Compared with the traditional heat exchange equipment, the pulsating heat pipe with the communicating passage has the advantages of simple structure, low cost and good heat conductivity, so that the power consumption of the whole air conditioning system is reduced, and the heating efficiency is increased. (5) The change of the inclination angle is placed on the pulsating heat pipe, so that the requirement of complex and variable working environments can be met.
Drawings
FIG. 1 is a schematic diagram of a carbon dioxide heat pump air conditioning system for solar power generation and defrosting.
Wherein: 1. a solar panel; 2. an energy storage device; 3. a pressure sensor; 4. an electrically heated defrost device; 5. LED lighting lamp 6, outdoor unit; 7. an expansion valve; 8. an indoor unit; 9. pulsating heat pipes; 10. a pulsating heat pipe condensing section; 11. and a pulsating heat pipe evaporation section.
Detailed Description
The present invention is mainly applicable to cooling in summer and heating in winter, and embodiments and work flows thereof will be specifically explained below with reference to the above two cases.
Summer working condition:
the summer working condition is mainly used for refrigeration and temperature reduction. (1) In summer, after the air conditioner is powered on, the low pressure steam of the refrigerant in the refrigerating system is sucked by the compressor and compressed into high pressure steam which is then discharged to the condenser, and the indoor air continuously and circularly flows to achieve the purpose of reducing the temperature. (2) In summer, the solar energy generates electricity, the electric energy distributed by the energy storage device can be used for bathroom illumination or corridor illumination at night, and the solar energy power generation system has the characteristics of energy conservation and environmental protection.
Working conditions in winter:
(1) in winter, the carbon dioxide is heated by the carbon dioxide heat pump in a circulating mode, the carbon dioxide is pressurized by the compressor to become high-temperature and high-pressure gas, the high-temperature and high-pressure gas enters the condenser, the high-temperature and high-pressure gas is condensed, liquefied and released to become liquid, and meanwhile indoor air can be heated, so that the final purpose of improving the indoor temperature is achieved. (2) When the air conditioner heats in winter, when the surface temperature of the heat exchange unit is lower than the dew point temperature of the atmosphere, the frosting phenomenon can occur. Therefore, when the pressure sensor detects the air pressure difference between the front and the rear of the heat exchanger, the solar energy storage device is regulated to start the defrosting device, and electric heating defrosting is realized.
Claims (5)
1. The utility model provides a carbon dioxide heat pump air conditioning system based on solar energy power generation defrosting which characterized in that: the solar power distribution system consists of solar energy (1), an energy storage device (2), a pressure sensor (3), an electric heating defrosting device (4) and an LED lamp (5), and defrosting and lighting effects are realized; the carbon dioxide heat pump air-conditioning system consists of an outdoor unit (6), an expansion valve (7) and an indoor unit (8), wherein the indoor unit and the outdoor unit are both provided with a communicating pulsating heat pipe (9) to play a role in enhancing the refrigeration and heating efficiency of the carbon dioxide heat pump air-conditioning.
2. The solar power defrosting carbon dioxide heat pump air conditioning system according to claim 1, wherein the solar panel, the electricity storage device, the pressure sensor and the defrosting device are respectively used for realizing power generation, electricity storage and electric defrosting regulation.
3. The carbon dioxide-based heat pump air conditioning system according to claim 1, wherein the working medium is carbon dioxide, energy consumption is saved, environmental protection is achieved, the evaporator and the condenser are loaded with a pulsating heat pipe system, self-excitation alternating oscillation is achieved, heat exchange is efficient, and air conditioning performance is improved.
4. The pulsating heat pipe system of claim 3, with a communication channel structure, wherein: firstly, the communication structure of the pulsating heat pipe is optimized, and the effect of enhancing heat transfer is achieved; secondly, the pulsating heat pipe is placed at a certain angle, so that the environment adaptability is strong.
5. The solar power distribution system of claim 1, wherein the lighting effect is achieved by the LED lamps, thereby improving the efficiency of energy utilization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910224828.8A CN111735157A (en) | 2019-03-24 | 2019-03-24 | Carbon dioxide heat pump air-conditioning system based on solar power generation defrosting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910224828.8A CN111735157A (en) | 2019-03-24 | 2019-03-24 | Carbon dioxide heat pump air-conditioning system based on solar power generation defrosting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111735157A true CN111735157A (en) | 2020-10-02 |
Family
ID=72646150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910224828.8A Pending CN111735157A (en) | 2019-03-24 | 2019-03-24 | Carbon dioxide heat pump air-conditioning system based on solar power generation defrosting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111735157A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115076909A (en) * | 2022-05-31 | 2022-09-20 | 青岛海尔空调器有限总公司 | Defrosting system, method and device of air conditioner and air conditioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10118572A1 (en) * | 2001-04-06 | 2002-10-17 | Harry Jentzsch | Heating and hot water supply, for a building, uses solar energy to heat them with an energy store to hold energy during low demand and a heat pump to give heating when the energy from the sun is low |
| CN201583074U (en) * | 2009-12-17 | 2010-09-15 | 张明亮 | Solar air-source hot pump for storing electricity and defrosting |
| CN102305488A (en) * | 2011-07-08 | 2012-01-04 | 浙江大学 | Solar heat pipe vehicle-mounted heat pump air conditioning system based on vortex tube |
| CN105571366A (en) * | 2015-12-25 | 2016-05-11 | 南昌大学 | Pulsating heat pipe with tilt-angle communicating pipe structure |
| CN106455431A (en) * | 2016-10-12 | 2017-02-22 | 上海交通大学 | Board type loop thermosyphon uniform-temperature board |
-
2019
- 2019-03-24 CN CN201910224828.8A patent/CN111735157A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10118572A1 (en) * | 2001-04-06 | 2002-10-17 | Harry Jentzsch | Heating and hot water supply, for a building, uses solar energy to heat them with an energy store to hold energy during low demand and a heat pump to give heating when the energy from the sun is low |
| CN201583074U (en) * | 2009-12-17 | 2010-09-15 | 张明亮 | Solar air-source hot pump for storing electricity and defrosting |
| CN102305488A (en) * | 2011-07-08 | 2012-01-04 | 浙江大学 | Solar heat pipe vehicle-mounted heat pump air conditioning system based on vortex tube |
| CN105571366A (en) * | 2015-12-25 | 2016-05-11 | 南昌大学 | Pulsating heat pipe with tilt-angle communicating pipe structure |
| CN106455431A (en) * | 2016-10-12 | 2017-02-22 | 上海交通大学 | Board type loop thermosyphon uniform-temperature board |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115076909A (en) * | 2022-05-31 | 2022-09-20 | 青岛海尔空调器有限总公司 | Defrosting system, method and device of air conditioner and air conditioner |
| WO2023231436A1 (en) * | 2022-05-31 | 2023-12-07 | 青岛海尔空调器有限总公司 | Defrosting system, method and device for air conditioner, and air conditioner |
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