Why Condensers Can Be Used As Evaporators?

Why Condensers Can Be Used as Evaporators?

Essentially, condensers and evaporators are both heat exchangers, and both serve the purpose of exchanging heat between hot and cold fluids. Condensers and evaporators can be used interchangeably because cooling and heating are inverse processes. When refrigeration, the condenser exothermic, high temperature and high pressure gas condensation for medium temperature and high pressure liquid, and due to the need to enter the evaporator before throttling pressure, low temperature and low pressure liquid in the evaporator to absorb heat into low temperature and low pressure gas. And heating is through the four-way valve will be the refrigerant flow direction change, the role of the two devices are also exchanged, so the condenser can be used as an evaporator.