at the metering device before the evaporator
the boiling point of refrigerant in a refrigeration or air conditioning system determines the pressure of the low side of the system
Metering device
cause its a gas
The King valve is closed, starving the low pressure side, creating more vacuum while charging with a liquid
In a simple system with a fixed orfice expansion device for example, an overcharge will increase suction and head pressure. Compressor amps will also increase. Overall refrigeration capacity will be reduced. lc
pressure in a refrigeration system is changed in the
the boiling point of refrigerant in a refrigeration or air conditioning system determines the pressure of the low side of the system
Metering device
Compressor and evaporator
Low side.
low temperature low pressure vapor
in orde to reduce the pressure........cming from the evaporator
low temperature low pressure vapor
low temperature low pressure vapor
charge through a pressure regulator
charge through a pressure regulator
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.