Why can evaporators and condensers be interchangeable when air conditioning is heating?
And the liquid freon is reduced by the throttle device, into the outdoor unit of the heat exchanger (at this time for the evaporator), evaporate the gasification endothermic, become the gas, while absorbing the outdoor air heat, become the gas freon again into the compressor start
, While the indoor air will be heated, so as to achieve the ultimate goal of improving the indoor temperature.
Air conditioning using heat pump cycle heating, the gas freon is compressed by the compressor to become high temperature and high pressure gas, through the four-way valve switch into the indoor unit heat exchanger (at this time for the condenser), condensate liquefaction heat, it becomes liquid
Whether the evaporation or condensation is dependent on the pressure conditions. Refrigeration cycle: Gaseous refrigerant is compressed after the pressure becomes high, you can absorb heat in high temperature environment, it will condensate in the condenser heat. The liquid refrigerant is swollen by the expansion valve and evaporates in the evaporator to absorb the heat in the relatively low temperature environment. Heat pump cycle the same reason. This is the great place of the Carnot and Carnegie cycle, he found the method of heat transfer outside the temperature.
