York YCWS manual Relief Valve

FORM 201.24-EG1

Relief Valve

	SG	Oil
Compressor		Separators
		Oil Cooling
		Liquid Injection
	Refrigerant Circuit No 2
TEV		Cooler

Relief

Valve

Condenser

SG

SV

Oil

SV = Solenoid Valve SG = Sight Glass

High Pressure Subcooled Liquid

Low Pressure Liquid

TEV = Thermostatic Expansion Valve

Low Pressure Superheated Vapour

High Pressure Superheated Vapour

Low-pressure liquid refrigerant enters the cooler tubes and is evaporated and superheated by the heat energy absorbed from the chilled liquid passing through the cooler shell. Low-pressure vapor enters the compressor where pressure and superheat are increased. High-pressure vapor is passed through the oil separator where heat is rejected to the con- denser water passing through the tubes. The fully condensed and subcooled liquid leaves the condenser and enters the expansion valve, where pressure reduction and further cooling take place. The low pressure liquid refrigerant then returns to the cooler. Each refrigerant circuit utilizes liquid injection, maintaining efficient oil temperature operation within the compressor.

YORK INTERNATIONAL 9