Integrated air-conditioning system of solar-assisted soil source CO2 trans-critical heat pump

A carbon dioxide and air conditioning system technology, applied in the field of solar energy utilization and air conditioning, can solve the problems of lower soil temperature, lower coefficient of performance, idle equipment, etc., and achieve the effect of improving coefficient of performance, compact equipment, and comprehensive functions

Active Publication Date: 2007-08-01
TSINGHUA UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

And the operation cycle of the air-conditioning equipment is very intermittent, which causes the equipment to be idle and increases the cost
For an independent solar heat collection system, it is seriously affected by weather factors, and there is a great deal of intermittency

Method used

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  • Integrated air-conditioning system of solar-assisted soil source CO2 trans-critical heat pump

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Embodiment Construction

[0017] Under different climatic conditions, this system can achieve three functions of heating water, heating and cooling through the coordination and cooperation of solar heat collection system, underground pipe system and heat pump air conditioning system. In general, this system has 5 working modes, namely: (1) hot water condition; (2) heating condition; (3) heating + hot water condition; (4) cooling condition; (5) Refrigeration + hot water conditions. The following are respectively introduced:

[0018] (1) Hot water condition

[0019] a) When the light intensity is sufficient, it is not necessary to turn on the heat pump system, and the solar hot water collection circuit system composed of the solar collector 9, the valve 13, the hot water storage tank, the water pump 10 and the valve 12 can directly reach the predetermined temperature of Bath temperature, the range is about 30-60 ℃.

[0020] b) When the light intensity is insufficient, turn on the compressor, switch th...

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Abstract

The invention discloses a solar-energy soil ultra-critical carbon dioxide heat pump air-conditioning system. The invention comprises an ultra-critical carbon dioxide heat pump medium circulator, a solar-energy collector, an underground tube heat exchanger, and an indoor air-conditioning tube. The invention arranges heat exchange coil tube, evaporator/gas cooler in the heat accumulating box, via four-way valve and valves to connect them into one air-conditioning system. The invention can work in five modes as heating, refrigerating, heating water, heating-heating water, and refrigerating-heating water, to heat water, refrigerate and supply heat.

Description

technical field [0001] The invention belongs to the technical scope of solar energy utilization and air-conditioning, and particularly relates to a solar-assisted soil source transcritical carbon dioxide heat pump integrated air-conditioning system. Specifically, it combines the solar heat collection system with the soil source transcritical carbon dioxide heat pump air conditioning system, and forms a triple supply of heating, cooling and hot water through the coordination of the solar heat collection system, the buried pipe heat exchange system and the heat pump air conditioning system. integrated system. Background technique [0002] As a natural substance, carbon dioxide is an ideal refrigerant. Its advantages are that it is non-toxic, non-flammable, has zero ODP value, low greenhouse effect, low price, no need for recycling, and no unforeseen side effects to the environment. At present, as a hot research field in the refrigeration industry, the research work of transcr...

Claims

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Application Information

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IPC IPC(8): F25B29/00F25B30/06F25B9/00F25B27/00
Inventor 姜培学孙兆虎王国梁
Owner TSINGHUA UNIV
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