CN105258379A - Heat pump solar evaporative condensation air conditioning unit - Google Patents
Heat pump solar evaporative condensation air conditioning unit Download PDFInfo
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- CN105258379A CN105258379A CN201510803296.5A CN201510803296A CN105258379A CN 105258379 A CN105258379 A CN 105258379A CN 201510803296 A CN201510803296 A CN 201510803296A CN 105258379 A CN105258379 A CN 105258379A
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Abstract
The invention relates to a heat pump solar evaporative condensation air conditioning unit which comprises a refrigerating system and a solar heat supply system, wherein the refrigerating system comprises a compressor, a four-way reversing valve, a first heat exchanger, a solar heat exchanger, a water distributor, a condensation fan, an evaporative condenser, a heating power expansion valve and a second heat exchanger, wherein the solar heat supply system comprises a solar heat collector, a solar heat storage device and a solar hot water circulating pump. A plane liquid membrane evaporative condensation technology and a solar heat supply technology are combined, so that the evaporative condensation air conditioning unit can simultaneously supply cold and heat sources and has a heat pump function. The evaporative condensation air conditioning unit solves the problem that an evaporative air conditioner cannot be used as a heat pump, and also solves the problems that an air source heat pump is low in efficiency and easy to frost in the low-temperature temperature.
Description
Technical field
The present invention relates to refrigeration air-conditioner, particularly relate to the pump type heat solar energy evaporating type condensing air-conditioner set being applicable to four-pipe system system, the invention belongs to field of heating ventilation air conditioning.
Background technology
Because evaporating type condensing air-conditioning equipment has the features such as energy-conservation, water saving, good refrigeration effect, compact conformation, easily installation and maintenance and operating cost are low; The central air-conditioning of application evaporating type condensing technology, can energy-conservation 15%-35% compared with the air-cooled air conditioning system of current extensive use, water cooling air conditioning system; Its know-why adopts plane liquid film evaporation formula condensation technology, by condenser is placed in cooling tower casing, direct acquisition is close to the cooling water temperature of wet-bulb temperature, save powerful cooling water system power consumption, achieve the high refrigerating efficiency of water-cooled unit and the advantage without the need to cooling water system of air-cooled liquid chillers; Evaporating type condensing air-conditioning equipment utilizes evaporative condenser technology to have above-mentioned advantage in summer, but in the winter of cold, it can not heat use as heat pump.
But clean as one, the efficient energy of net for air-source heat pump units, obtains large-scale application in China; Net for air-source heat pump units requires operation that can be stable in the scope that outdoor temperature is wider, the outdoor heat exchanger of net for air-source heat pump units, affected by environment large especially, especially at low ambient temperatures, affect the heating capacity of heating condition, the comfortableness requirement of indoor environment cannot be reached; Traditional processing method installs electrical heating additional heat additional to realize at indoor pusher side, its shortcoming does not solve efficiency from refrigeration system, worst cold case energy consumption is large especially, the original intention of net for air-source heat pump units design is exactly be issued to energy-saving and emission-reduction, so the safe and stable operation realizing system is only the key of problem meeting the comfortable prerequisite that should require.
Four-pipe system air-conditioning system because of net for air-source heat pump units needs two to overlap independently Cooling and Heat Source, system complex; There is cold-hot counteraction, system effectiveness is low simultaneously, is to utilize the extensive style of the energy, and energy consumption waste is serious, and cost increases.
At present, the main energy sources of China's building heating remains coal, oil, natural gas etc., and the reserves of the conventional mineral energy are very limited; On the other hand, China has abundant solar energy resources, more than in the area of 2/3 solar energy year sunshine time all more than 2200 hours, there is good value.
In order to better solve the problem of above-mentioned evaporating type condensing air-conditioner set, design has pump type heat solar energy evaporating type condensing air-conditioner set, solution evaporative condenser technology and air source heat pump low temperature supplement contradictory problems between the two, and the cost reducing energy consumption and material is feasible act.
Summary of the invention
The technical program object is, structure based on existing air-conditioner set makes further improvements, adopt plane liquid film evaporation formula condensation technology and solar-heating combine with technique, there is provided one can provide Cooling and Heat Source simultaneously, and there is the evaporating type condensing air-conditioner set of heat pump functional, solve the problem of low, the easy frosting of air source heat pump efficiency at low ambient temperatures.
Object of the present invention is achieved through the following technical solutions:
A kind of pump type heat solar energy evaporating type condensing air-conditioner set, comprise refrigeration system, solar energy heat distribution system, described refrigeration system comprises compressor, four-way change-over valve, First Heat Exchanger, solar heat exchanger, water-locator, condensation fan, evaporative condenser, heating power expansion valve, the second heat exchanger; The exhaust outlet of described compressor is connected four-way change-over valve with air entry, described four-way change-over valve is also connected with First Heat Exchanger, the second heat exchanger, described First Heat Exchanger connects solar heat exchanger and evaporative condenser, wherein connect heating power expansion valve again after solar heat exchanger, evaporative condenser parallel connection, heating power expansion valve connects the second heat exchanger again, and the second heat exchanger connects four-way change-over valve again; It is characterized in that: solar energy heat distribution system comprises solar thermal collector, solar energy storage thermal, solar heat water-circulating pump, solar water circulating-pump outlet connects the import of solar heat exchanger, the import of solar heat exchanger outlet connection solar energy storage thermal, the outlet of solar energy storage thermal connects the import of solar heat water-circulating pump, solar energy storage thermal connects solar thermal collector, and the radiant energy of the sun is converted into thermal energy storage in solar energy storage thermal by solar thermal collector.
Described evaporative condenser top arranges water-locator, and side arranges condensation fan, and described evaporative condenser has heat exchanger tube and fin.
Described First Heat Exchanger, the second heat exchanger are plate type heat exchanger or shell and tube exchanger or double pipe heat exchanger.
Described evaporative condenser is the evaporative condenser of fin tube type or band-tube type or coiled.
The refrigerating medium that described First Heat Exchanger, the second heat exchanger provide is the refrigerating medium of water or ethylene glycol or calcium chloride form.
The technical program there is unique advantage and beneficial effect as follows:
(1), the technical program pump type heat solar energy evaporating type condensing air-conditioner set, adopt evaporative condenser, eliminate join outside refrigeration host computer cooling tower, cooling water pump and cooling water pipeline and annex etc. thereof, change the outer circulation mode of traditional cooling water into inner loop mode, enormously simplify cooling water system, reduce the water loss that wafts of cooling water simultaneously, thus substantially increase the Energy Efficiency Ratio of air-conditioning system;
(2) plane liquid film evaporation formula condensation technology, is adopted, make full use of outside outer tube and the evaporation of fin surface moisture film, only need less air quantity and less cooling water inflow can realize the cooling condensation of tube refrigerant by mass transfer and heat transfer, obviously reduce without the need to the distribution power of cooling tower and powerful cooling water pump, condensation fan, water pump and engineering initial investment;
(3), the technical program compares with prior art, the advantage also had is, utilize solar water assisted solution, namely solve evaporating air conditioner and as the problem of heat pump, the problem of low, the easy frosting of air source heat pump efficiency at low ambient temperatures can not be solved again; No matter be at cooling condition, or at heating condition, hot water, cold water can be provided simultaneously, realize the maximization of using energy source, solve annual hot and cold demand; (4), the technical program systematic energy efficiency ratio is high: under standard condition, complete machine Energy Efficiency Ratio reaches 3.5-4.5, and more energy-conservation than water-cooled unit more than 20%, more than general air-cooled unit energy-conservation more than 35%.
Accompanying drawing explanation
Fig. 1 is the principle schematic of pump type heat solar energy evaporating type condensing air-conditioner set cooling condition;
Fig. 2 is the principle schematic of pump type heat solar energy evaporating type condensing air-conditioner set heating condition;
In figure, the implication of Reference numeral is:
The storage of 1-compressor, 2-four-way change-over valve, 3-First Heat Exchanger, 4-solar thermal collector, 5-solar energy thermal, 6-solar heat water-circulating pump, 7-solar heat exchanger, 8-water-locator, 9-condensation fan, 10-evaporative condenser, 11-heating power expansion valve, 12-second heat exchanger, 201-refrigeration system, 301-solar energy heat distribution system.
Detailed description of the invention
Below in conjunction with Figure of description in detail technical solution of the present invention is described in detail:
Shown in Fig. 1, Fig. 2, pump type heat solar energy evaporating type condensing air-conditioner set, comprise refrigeration system (201), solar energy heat distribution system (301), described refrigeration system (201) comprises compressor (1), four-way change-over valve (2), First Heat Exchanger (3), solar heat exchanger (7), water-locator (8), condensation fan (9), evaporative condenser (10), heating power expansion valve (11), the second heat exchanger (12), the exhaust outlet of described compressor (1) is connected four-way change-over valve (2) with air entry, described four-way change-over valve (2) is also connected with First Heat Exchanger (3), the second heat exchanger (12), described First Heat Exchanger (3) connects solar heat exchanger (7) and evaporative condenser (10), wherein connect heating power expansion valve (11) again after solar heat exchanger (7), evaporative condenser (10) parallel connection, heating power expansion valve (11) connects the second heat exchanger (12) again, and the second heat exchanger (12) connects four-way change-over valve (2) again, it is characterized in that: solar energy heat distribution system (301) comprises solar thermal collector (4), solar energy storage thermal (5), solar heat water-circulating pump (6), solar heat water-circulating pump (6) outlet connects the import of solar heat exchanger (7), solar heat exchanger (7) outlet connects the import of solar energy storage thermal (5), the outlet of solar energy storage thermal (5) connects the import of solar heat water-circulating pump (6), solar energy storage thermal (5) connects solar thermal collector (4), the radiant energy of the sun is converted into thermal energy storage and stores in thermal (5) at solar energy by solar thermal collector (4).
When cooling condition, provide hot water by First Heat Exchanger (3), provide cold water by the second heat exchanger (12); When heating condition, provide cold water by First Heat Exchanger (3), provide hot water by the second heat exchanger (12).
Further, during cooling condition, the gaseous refrigerant of the HTHP that described compressor (1) is discharged enters First Heat Exchanger (3) through four-way change-over valve (2), release partial heat, enter evaporative condenser (10) again, release remaining condensation heat, become the refrigerant liquid of high pressure; The refrigerant liquid of high pressure becomes the refrigerant liquid of low pressure through heating power expansion valve (11), enter the second heat exchanger (12), absorbs the refrigerant gas that heat becomes low pressure, then enters compressor through four-way change-over valve (2).
Further, the water absorption refrigeration agent liberated heat in described First Heat Exchanger (3) becomes the hot water of high temperature, for user; Remaining condensation heat is taken away by the outer air of evaporative condenser (10) and cooling water; Cooled dose of water in described the second heat exchanger (12) absorbs heat, becomes the cold water of low temperature, for user.
When cooling water is sprayed at evaporative condenser (10) heat pipe and fin surface uniformly by water-locator (8), the very thin moisture film of one deck is formed at heat exchanger tube and fin surface, flow from top to bottom, simultaneously, condensation fan (9) drives air to skim over heat exchanger tube and fin surface impels water film evaporation, utilizes the evaporation of cooling water to take away condenser heat.
Further, when heating condition, the gaseous refrigerant of the HTHP that compressor (1) is discharged enters the second heat exchanger (12) through four-way change-over valve (2), release heat, become the refrigerant liquid of high pressure, the refrigerant liquid of high pressure becomes the refrigerant liquid of low pressure through heating power expansion valve (11), when outside air temperature is higher, the refrigerant liquid of low pressure enters evaporative condenser (10), when outdoor air is lower exist frosting or heat exchange efficiency too low time, the refrigerant liquid of low pressure enters solar heat exchanger (7), absorb the refrigerant air-liquid mixture that heat becomes low pressure, again through First Heat Exchanger (3), absorb the refrigerant gas that heat becomes low pressure again, compressor (1) is entered again through four-way change-over valve (2).
Water absorption refrigeration agent liberated heat in described the second heat exchanger (12), becomes the hot water of high temperature, for user; Cooled dose of water in described First Heat Exchanger (3) absorbs heat, becomes the cold water of low temperature, for user; Cooled dose of hot water in described solar energy storage thermal (5) absorbs heat, and temperature reduces gradually, within second day, again absorbs solar heat, becomes hot-water storage heat.
Further, when heating condition, cold-producing medium recycled back, water-locator (8) stops water spray, evaporative condenser (10) is as evaporimeter, absorb the heat in air, when air themperature is lower may cause evaporimeter frosting time, solar heat water-circulating pump (6) starts, solar water enters solar heat exchanger (7) as auxiliary thermal source, solar heat exchanger (7) absorbs the heat of water in solar energy storage thermal (5) as evaporimeter, solves the problem of low, the easy frosting of air source heat pump efficiency at low ambient temperatures.
Finally it should be noted that; above embodiment is in order to illustrate the preferred embodiment of the present invention; do not do this technical scheme and limit further, the routine of carrying out this technical scheme in this area changes and the replacement of unsubstantiality all should be included in the protection domain of present patent application.
Claims (10)
1. pump type heat solar energy evaporating type condensing air-conditioner set, comprise refrigeration system (201), solar energy heat distribution system (301), described refrigeration system (201) comprises compressor (1), four-way change-over valve (2), First Heat Exchanger (3), solar heat exchanger (7), water-locator (8), condensation fan (9), evaporative condenser (10), heating power expansion valve (11), the second heat exchanger (12), the exhaust outlet of described compressor (1) is connected four-way change-over valve (2) with air entry, described four-way change-over valve (2) is also connected with First Heat Exchanger (3), the second heat exchanger (12), described First Heat Exchanger (3) connects solar heat exchanger (7) and evaporative condenser (10), wherein connect heating power expansion valve (11) again after solar heat exchanger (7), evaporative condenser (10) parallel connection, heating power expansion valve (11) connects the second heat exchanger (12) again, and the second heat exchanger (12) connects four-way change-over valve (2) again, it is characterized in that: solar energy heat distribution system (301) comprises solar thermal collector (4), solar energy storage thermal (5), solar heat water-circulating pump (6), solar heat water-circulating pump (6) outlet connects the import of solar heat exchanger (7), solar heat exchanger (7) outlet connects the import of solar energy storage thermal (5), the outlet of solar energy storage thermal (5) connects the import of solar heat water-circulating pump (6), solar energy storage thermal (5) connects solar thermal collector (4), the radiant energy of the sun is converted into thermal energy storage and stores in thermal (5) at solar energy by solar thermal collector (4).
2. pump type heat solar energy evaporating type condensing air-conditioner set according to claim 1, it is characterized in that: described evaporative condenser (10) top arranges water-locator (8), side arranges condensation fan (9), and described evaporative condenser (10) has heat exchanger tube and fin.
3. pump type heat solar energy evaporating type condensing air-conditioner set according to claim 1, is characterized in that: described First Heat Exchanger (3), the second heat exchanger (12) are plate type heat exchanger or shell and tube exchanger or double pipe heat exchanger.
4. pump type heat solar energy evaporating type condensing air-conditioner set according to claim 1 and 2, is characterized in that: described evaporative condenser (10) is the evaporative condenser of fin tube type or band-tube type or coiled.
5. the pump type heat solar energy evaporating type condensing air-conditioner set according to claim 1 and 3, is characterized in that: the refrigerating medium that described First Heat Exchanger (3), the second heat exchanger (12) provide is the refrigerating medium of water or ethylene glycol or calcium chloride form.
6. pump type heat solar energy evaporating type condensing air-conditioner set according to claim 1, is characterized in that: when cooling condition, provides hot water by First Heat Exchanger (3), provide cold water by the second heat exchanger (12); When heating condition, provide cold water by First Heat Exchanger (3), provide hot water by the second heat exchanger (12).
7. pump type heat solar energy evaporating type condensing air-conditioner set according to claim 1, it is characterized in that: during cooling condition, the gaseous refrigerant of the HTHP that described compressor (1) is discharged enters First Heat Exchanger (3) through four-way change-over valve (2), release partial heat, enter evaporative condenser (10) again, release remaining condensation heat, become the refrigerant liquid of high pressure; The refrigerant liquid of high pressure becomes the refrigerant liquid of low pressure through heating power expansion valve (11), enter the second heat exchanger (12), absorbs the refrigerant gas that heat becomes low pressure, then enters compressor through four-way change-over valve (2).
8. pump type heat solar energy evaporating type condensing air-conditioner set according to claim 1, it is characterized in that: cooling water is sprayed at evaporative condenser (10) heat pipe and fin surface uniformly by water-locator (8), the very thin moisture film of one deck is formed at heat exchanger tube and fin surface, flow from top to bottom, simultaneously, condensation fan (9) drives air to skim over heat exchanger tube and fin surface impels water film evaporation, utilizes the evaporation of cooling water to take away condenser heat.
9. pump type heat solar energy evaporating type condensing air-conditioner set according to claim 1, it is characterized in that: when heating condition, the gaseous refrigerant of the HTHP that compressor (1) is discharged enters the second heat exchanger (12) through four-way change-over valve (2), release heat, become the refrigerant liquid of high pressure, the refrigerant liquid of high pressure becomes the refrigerant liquid of low pressure through heating power expansion valve (11), when outside air temperature is higher, the refrigerant liquid of low pressure enters evaporative condenser (10), when outdoor air is lower exist frosting or heat exchange efficiency too low time, the refrigerant liquid of low pressure enters solar heat exchanger (7), absorb the refrigerant air-liquid mixture that heat becomes low pressure, again through First Heat Exchanger (3), absorb the refrigerant gas that heat becomes low pressure again, compressor (1) is entered again through four-way change-over valve (2).
10. pump type heat solar energy evaporating type condensing air-conditioner set according to claim 1, it is characterized in that: when heating condition, cold-producing medium recycled back, water-locator (8) stops water spray, evaporative condenser (10) is as evaporimeter, absorb the heat in air, when air themperature is lower may cause evaporimeter frosting time, solar heat water-circulating pump (6) starts, solar water enters solar heat exchanger (7) as auxiliary thermal source, and solar heat exchanger (7) absorbs the heat of water in solar energy storage thermal (5) as evaporimeter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510803296.5A CN105258379A (en) | 2015-11-19 | 2015-11-19 | Heat pump solar evaporative condensation air conditioning unit |
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| CN201510803296.5A CN105258379A (en) | 2015-11-19 | 2015-11-19 | Heat pump solar evaporative condensation air conditioning unit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107883608A (en) * | 2017-12-06 | 2018-04-06 | 北京京诚科林环保科技有限公司 | Solar air source heat pump unit |
| CN110848846A (en) * | 2019-11-19 | 2020-02-28 | 珠海格力电器股份有限公司 | Solar air-conditioning heat pump system, control method and air conditioner |
| CN111550920A (en) * | 2020-05-18 | 2020-08-18 | 珠海格力电器股份有限公司 | Solar-assisted air energy water heater system and control method thereof |
| CN116358076A (en) * | 2021-12-28 | 2023-06-30 | 中核第七研究设计院有限公司 | Concurrent zigzag heat collecting evaporator solar-air energy cooling device and concurrent zigzag heat collecting evaporator solar-air energy cooling method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107883608A (en) * | 2017-12-06 | 2018-04-06 | 北京京诚科林环保科技有限公司 | Solar air source heat pump unit |
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| CN111550920A (en) * | 2020-05-18 | 2020-08-18 | 珠海格力电器股份有限公司 | Solar-assisted air energy water heater system and control method thereof |
| CN116358076A (en) * | 2021-12-28 | 2023-06-30 | 中核第七研究设计院有限公司 | Concurrent zigzag heat collecting evaporator solar-air energy cooling device and concurrent zigzag heat collecting evaporator solar-air energy cooling method |
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