What is the difference between condenser and evaporator?
Release Date: 2022-07-12 21:36:48Views:

The condenser and evaporator belong to the heat exchanger. The so-called heat exchange is the equipment that has two or more fluids with different temperatures to conduct heat mutually, so it is also called heat exchange equipment. Therefore, although the structure forms of condensers and evaporators are various, their working principles are the same. They are all equipment that exchanges heat with the external medium flowing through the surface of their containers through refrigerant, that is, they are both heat exchangers. In terms of the factors affecting heat transfer, the condenser and evaporator are the same, and the heat transfer is related to the heat transfer area, temperature difference and heat transfer coefficient.


The working forms of condenser and evaporator are different. The condenser cools and liquefies the medium and releases heat to the outside; The evaporator is the medium that absorbs heat and vaporizes and absorbs external heat, that is, the refrigerant changes from a gaseous state to a liquid state, which is a condensation and heat release process, and its internal pressure is generally high; The refrigerant of the evaporator changes from liquid to gas, which is an evaporation and heat absorption process, and its internal pressure is generally low.

The condenser is one of the main heat exchange equipment in the refrigeration unit. Its function is to cool and condense the refrigerant superheated steam discharged from the pressure rise of the refrigerator into refrigerant liquid and release heat into the cooling medium. Common cooling media are: water and air.

Evaporator is the equipment used for heat exchange between refrigerant and low temperature heat source in refrigeration system, and is also one of the main heat exchange equipment in refrigeration device. In the evaporator, the refrigerant liquid vaporizes at low pressure and low temperature to absorb the heat of the cooling medium and becomes the dry saturated gas or superheated steam of the refrigerant at low temperature and low pressure, thus generating and outputting cooling capacity in the refrigeration system. The evaporator is located between the throttle valve and the main return pipe of the refrigerator or between the liquid supply pipe and the return pipe of the vapor liquid separation equipment, and is installed in the cold room or place where cooling and freezing are required.

Evaporator and condenser are important parts of refrigeration equipment. Only by the heat absorption and heat release reaction of these two parts can the refrigeration equipment work normally.

As a heat absorbing component, the evaporator uses the volatile characteristics of liquid cryogenic refrigerant under low pressure to convert into steam and absorb the heat of the cooled medium to achieve the refrigeration purpose. In terms of structure, it can be divided into box type, pipe type, plate type and other different types.

As a heat releasing component, the condenser can convert the high-temperature and high-pressure gaseous refrigerant compressed by the compressor into the low-temperature and high-pressure liquid, so as to dissipate heat to the outside world. It absorbs and releases heat with the evaporator, thus realizing heat conservation. In terms of structure, it can be divided into shell and tube type, casing type, plate type, water spraying type and other different types.

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