Overview of refrigeration system

Update:28 Dec 2019
Summary:

The function of compressor is to compress the steam wit […]

The function of compressor is to compress the steam with lower pressure into the steam with higher pressure, so as to reduce the volume of steam and increase the pressure. The compressor sucks in the working medium steam with lower pressure from the evaporator, and sends it to the condenser after the pressure rises. The liquid with higher pressure is condensed in the condenser. After throttling by the throttle valve, it becomes the liquid with lower pressure, and then it is sent to the evaporator. In the evaporator, it absorbs heat and evaporates to become the steam with lower pressure, and then it is sent to the inlet of the compressor to complete the refrigeration cycle.

The system that uses the external energy to transfer the heat from the lower temperature substance (or environment) to the higher temperature substance (or environment) is called refrigeration system.
The refrigeration system can be divided into vapor refrigeration system, air refrigeration system and thermoelectric refrigeration system. The vapor refrigeration system can be divided into vapor compression type, vapor absorption type and vapor injection type.