a simple aircraft refrigeration system is an air refrigeration system, where air is used as the working fluid. the compressor of the aircraft is used to compress the air isentopicaly by ramming process, thus increasing its pressure from p1 to p2. constant pressure heat rejection takes place in a heat exchanger, thus redusing its temperature. now it is isentropicaly expanded using the turbine to the cabin pressure. this air mixes with the air in the cabin and reduses the temperature.
pressure in a refrigeration system is changed in the
cause its a gas
at the metering device before the evaporator
An evaporator in a refrigeration system works by passing warm air over it's coils.
the boiling point of refrigerant in a refrigeration or air conditioning system determines the pressure of the low side of the system
on the bottom
Two problems that a refrigeration system could have are compressor problems or a lack of or loss of refrigerant gas.
Refrigeration systems use CFC. They deplete ozone.
right before the compressor
an air conditioning system, is considered high-temperature refrigeration and is used for comfort cooling.
Liquid refrigerant charging of a system is normally accomplished in the liquid line. For example, when a system is out of refrigerant, liquid refrigerant can be charged into the king valve on the liquid line or receiver.
Package refrigeration equipment is a system that used for the process of refrigeration. Household refrigerators, industrial freezers, cryogenics, and air condition and big plants in industries for cooling purpose are the examples of package refrigeration equipment.