Adjustable tandem circulating device for CO2 heat pump and circulating method

Abstract

The invention discloses an adjustable tandem circulating device for a CO2 heat pump. The circulating device comprises a throttle valve, an evaporator and a compressor which are sequentially connected, wherein a first condenser and a second condenser are connected in series between the compressor and the throttle valve to form a circulating loop, wherein CO2 is used as the circulating medium; the first condenser is connected to a water supply system; the second condenser is connected to an air-conditioning system; a fifth valve is arranged between the water inlet of the first condenser and thewater outlet of the second condenser; a sixth valve is arranged between the water outlet of the first condenser and the water outlet of the second condenser; the evaporator is connected to a heat-exchange system; a first bypass and a second bypass are connected between the second condenser and the heat-exchange system; a third bypass and a fourth bypass are connected between the evaporator and the air-conditioning system; and valves are respectively arranged on the first bypass, the second bypass, the third bypass and the fourth bypass. Accordingly, by setting the on / off state of each valve, the invention can achieve the refrigeration, heating and domestic hot water supply for a traditional air conditioner. Therefore, the invention is widely applicable to housing and production.

Description

technical field [0001] The invention relates to a heat pump cycle mode, in particular to an adjustable series CO 2 Heat pump circulation system. Background technique [0002] Energy and environmental issues are two major social issues facing contemporary mankind. Energy is the driving force for economic development and the material basis for the development of human society. However, with the rapid growth of the world economy and population, energy consumption has increased dramatically. The cumulative effect of excessive development and consumption of energy has produced environmental problems that restrict economic development and affect human survival. The climate change caused by greenhouse gas emissions has posed a serious challenge to the global ecology and the development of human society. The greenhouse effect and the destruction of the ozone layer have become important environmental factors restricting the coordinated and stable development of my country's econom...

AI Technical Summary

Problems solved by technology

In addition, domestic hot water is mostly obtained from the ambient temperature by electric heating or gas heating, which greatly consumes high-quality energy and primary energy.

In addition, the artificial refrigerants used in traditional air conditioners have adverse effects on the greenhouse effect and the destruction of the ozone layer.

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