CN103216900A - Solar phase-change heat-storage heat source tower heat pump system - Google Patents
Solar phase-change heat-storage heat source tower heat pump system Download PDFInfo
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- CN103216900A CN103216900A CN2013101744940A CN201310174494A CN103216900A CN 103216900 A CN103216900 A CN 103216900A CN 2013101744940 A CN2013101744940 A CN 2013101744940A CN 201310174494 A CN201310174494 A CN 201310174494A CN 103216900 A CN103216900 A CN 103216900A
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Abstract
The invention discloses a solar phase-change heat-storage heat source tower heat pump system (see attached drawing for schematic diagram). The system mainly comprises an improved closed heat source tower (1), a solution expansion tank (2), a phase-change heat storage tank (3), a constant pressure device (4), an ethylene glycol circulating pump (5), a solar heat-collecting panel (6), a load pump (7), a heat source tower water pump (8), a heat source tower heat pump set (9) and an air conditioner end (10), which are communicated through water pipes, and valves are installed for regulation; and the phase-change heat storage tank (3) is in series connected with the improved closed heat source tower (1). When the system is started, the solar heat collector absorbs solar energy, and the energy is stored in the phase-change heat storage tank; the antifreezing solution first enters the heat source tower to be in indirect heat exchange with air (the spray-antifrosting system is stared when necessary), then enters the solar phase-change heat storage tank to be continued to conduct heat exchange, and finally enters the heat pump set for heating after the temperature further increases; and the system can solve the problem of low COP value of the heat pump set in winter in the improved closed heat source tower heat pump system, reduce the operating energy consumption and the operating cost of the heat pump set, and is energy-saving and environment-friendly.
Description
Technical field
The present invention relates to solar energy phase transition heat accumulation auxiliary thermal source tower heat pump winter heating technology.
Background technology
Energy savings and comprehensive utilization of resources are long-range strategy and policy of China's economy and social development.For air-conditioning system, seeking cheap renewable Cooling and Heat Source is the key measure of saving energy and reduce the cost.The thermal source tower is a kind of novel heat-mass exchange equipment, utilizes cheap air energy, and a tower is dual-purpose in heat pump, and low-temperature receiver is provided summer, and thermal source is provided winter, mainly contains three kinds of typical structures (open type, plain edition enclosed and modified enclosed).Open architecture heat exchange efficiency height, simple structure, cost are low, but working medium (summer cooling water, preventing freeze in winter solution) drift is bigger, and anti-freezing solution absorbs airborne moisture easily and dilute gradually, make the freezing point temperature instability; The plain edition closed type structure adopts low temperature broadband heat exchange coil, can effectively suppress frosting in winter problem, reduce the drift of working medium, but heat exchange efficiency is low, and the COP value in source pump winter is also lower; Modified closed type structure heat exchange efficiency in summer height, and can effectively suppress frosting in winter problem, but still there is the low problem of COP value of the low and source pump of heat exchange efficiency in winter.
Solar energy phase transition heat accumulation heat source tower heat pump system solar energy phase transition heat accumulation heat source tower heat pump system synthesis is utilized the regenerative resource of solar energy and these two kinds of cheapnesss of air energy, mainly is intended to solve the low problem of modified closed type heat source tower heat pump unit in winter COP value.The characteristics of native system are that the solar energy that utilizes winter the phase-transition heat-storage case to store further heats the anti-freezing solution that flows out from the thermal source tower, thereby improve the evaporating temperature of source pump, and then the COP value of increase source pump winter operation, the operation energy consumption and the operating cost of reduction machine unit in winter.
Summary of the invention
At existing heat source tower heat pump systems technology above shortcomings, the solar energy that the objective of the invention is to utilize winter the phase-transition heat-storage case to store further heats the anti-freezing solution that flows out from the modified closed type heat source tower, thereby improve the evaporating temperature of source pump, and then the COP value of increase source pump winter operation, reduce operation energy consumption and operating cost.This technology is suitable for China's southern area to be used, instead of null source of the gas heat pump, thus effectively solve the problem that southern area uses the air source heat pump frosting winter.
For this reason, the present invention has taked following technical scheme: native system mainly is made up of modified closed type heat source tower 1, solution expansion drum 2, phase-transition heat-storage case 3, level pressure equipment 4, glycol circulation pump 5, solar heat collection plate 6, partial load pump 7, thermal source tower water pump 8, heat source tower heat pump unit 9, air conditioning terminal 10.
Description of drawings
Accompanying drawing 1 solar energy phase transition heat accumulation heat source tower heat pump systematic schematic diagram.
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing 1.
In heating season, solar heat-collection plate absorbs solar energy, heated glycol, and the water tank heat exchanger tube of the ethylene glycol input phase-transition heat-storage case after the glycol circulation pump will heat, the heating hot water storage tank, heat more than needed is stored in the phase change heat storage material; In the time of night or rainy weather, solar heat-collection plate can not absorb solar energy, but the phase-changing heat accumulation plate release heat, the heating hot water storage tank.
What the thermal source tower in the accompanying drawing 1 adopted is the modified closed type heat source tower, and source pump winter, summer condition adopt four-way change-over valve to switch.Summer, open valve 11,14, valve-off 12,13,15, the solar energy phase transition heat accumulation system does not move; Cooling water is sprayed the packing layer surface uniformly, directly contacts with air, carries out the caloic exchange by contacting heat radiation and evaporative heat loss and surrounding air, has blower fan to drive air-flow circulation in the tower, raising cooling effect again.Winter, open valve 12,13,15, valve-off 11,14, solar heat-collection plate absorbs solar energy, heating phase-transition heat-storage case; Anti-freezing solution (ethylene glycol) is introduced into the thermal source tower, in the heat exchange coil of low temperature broadband, circulate, carry out indirect type caloic exchange (starting the anti-defrosting system of spray in case of necessity) with air, enter the solar energy phase transition heat accumulation case then and proceed heat exchange, temperature further improves, and enters the heat source tower heat pump unit at last and heats.
Compared to existing technology, the present invention has following advantage:
(1) utilize winter of the present invention solar thermal collector to absorb solar energy, heat is stored in the phase-transition heat-storage case, heats anti-freezing solution then, further improve the temperature of anti-freezing solution from the thermal source tower, enter the heat source tower heat pump unit at last, carry out heat exchange by evaporimeter and cold-producing medium; Evaporating temperature when so just having increased the unit winter operation, thereby the cop value when improving the source pump heating operation, thereby the operation energy consumption and the operating cost of reduction source pump in winter.
(2) the present invention has fully utilized solar energy and these two kinds of clean and cheap energy of air energy, cop value during raising heat source tower heat pump unit winter heating operation that can be to a certain degree, the operation energy consumption of reduction machine unit in winter meets innovation, environmental protection and requirements of saving energy that country advocates energetically.
(3) the present invention adopts phase change heat storage material to carry out accumulation of heat, the phase-change material heat density is big, the storage heater compact conformation, volume is little, the thermal efficiency is high, the heat absorption exothermic temperature is constant, easily with the operational system coupling, be easy to control, for the user saves space and more convenient user use;
(4) the present invention is particularly suitable for China's southern area use, instead of null source of the gas heat pump, thus effectively solve the problem that this area uses the air source heat pump frosting winter.
Claims (1)
1. solar energy phase transition heat accumulation heat source tower heat pump system mainly is made up of modified closed type heat source tower 1, solution expansion drum 2, phase-transition heat-storage case 3, level pressure equipment 4, glycol circulation pump 5, solar heat collection plate 6, partial load pump 7, thermal source tower water pump 8, heat source tower heat pump unit 9, air conditioning terminal 10;
It is characterized in that:
Water pipe UNICOM between A, each parts of this system, and mounted valve is regulated; The phase-transition heat-storage case is connected with the thermal source tower;
B, source pump winter summer condition adopt four-way change-over valve to switch, and summer, the solar heat-preservation system did not move, and winter solar can be moved by hold over system;
C, air conditioning terminal form can be flooring radiation heating, radiator heating, also can be forms such as fan coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101744940A CN103216900A (en) | 2013-05-13 | 2013-05-13 | Solar phase-change heat-storage heat source tower heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101744940A CN103216900A (en) | 2013-05-13 | 2013-05-13 | Solar phase-change heat-storage heat source tower heat pump system |
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| Publication Number | Publication Date |
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| CN103216900A true CN103216900A (en) | 2013-07-24 |
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| CN2013101744940A Pending CN103216900A (en) | 2013-05-13 | 2013-05-13 | Solar phase-change heat-storage heat source tower heat pump system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644612A (en) * | 2013-12-10 | 2014-03-19 | 重庆大学 | Heat source tower heat pump air-conditioning system capable of using cool storage device to assist heating |
| CN103673396A (en) * | 2013-12-20 | 2014-03-26 | 湖南创化低碳环保科技有限公司 | Heat exchange system |
| CN104501469A (en) * | 2014-12-10 | 2015-04-08 | 哈尔滨工业大学 | Flowing phase change and energy storage falling film evaporative heat exchange device |
| CN104864736A (en) * | 2015-05-21 | 2015-08-26 | 天津大学 | Solar-assisted real-time regeneration system for anti-freezing solution of open heat-source tower |
| CN109974437A (en) * | 2019-03-22 | 2019-07-05 | 广东创陆制冷科技有限公司 | A kind of phase-transition heat-storage coupled solar Analysis of Heat Pump Drying System |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201476400U (en) * | 2009-05-25 | 2010-05-19 | 候春来 | Heating and cooling system of solar heat pump |
| CN102679624A (en) * | 2012-06-08 | 2012-09-19 | 湖南大学 | Solar energy and heat source tower heat pump combined triple supply air-conditioning system |
-
2013
- 2013-05-13 CN CN2013101744940A patent/CN103216900A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201476400U (en) * | 2009-05-25 | 2010-05-19 | 候春来 | Heating and cooling system of solar heat pump |
| CN102679624A (en) * | 2012-06-08 | 2012-09-19 | 湖南大学 | Solar energy and heat source tower heat pump combined triple supply air-conditioning system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644612A (en) * | 2013-12-10 | 2014-03-19 | 重庆大学 | Heat source tower heat pump air-conditioning system capable of using cool storage device to assist heating |
| CN103673396A (en) * | 2013-12-20 | 2014-03-26 | 湖南创化低碳环保科技有限公司 | Heat exchange system |
| CN103673396B (en) * | 2013-12-20 | 2015-11-18 | 湖南创化低碳环保科技有限公司 | Heat-exchange system |
| CN104501469A (en) * | 2014-12-10 | 2015-04-08 | 哈尔滨工业大学 | Flowing phase change and energy storage falling film evaporative heat exchange device |
| CN104864736A (en) * | 2015-05-21 | 2015-08-26 | 天津大学 | Solar-assisted real-time regeneration system for anti-freezing solution of open heat-source tower |
| CN109974437A (en) * | 2019-03-22 | 2019-07-05 | 广东创陆制冷科技有限公司 | A kind of phase-transition heat-storage coupled solar Analysis of Heat Pump Drying System |
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Application publication date: 20130724 |