J103 & J104 (requires PT chart & Psychometrics graph)

What are the five main types of compressors found in Refrigeration?

• Reciprocating, Scroll, Centrifugal, Rotory, Screw

• Reciprocating, Scroll, Vane, Rotory, Spindel

• Reciprocating, Vane, Centrifugal, Rotating, Spindel

• Piston, Spindel, Rotating, Screw, Centrifugal

What is the purpose of the compressor?

• Add heat

• Create a pressure difference

• Vaporize the refrigerant

• Circulate the refrigerant

What is the purpose of the Evaporator?

• To absorb heat

• To reject heat

• To change the refrigerants state from a vapour to a liquid

• To change the refrigerants state from a liquid to a vapour

What is the purpose of the Condenser?

• To absorb heat

• To reject heat

• To change the refrigerants state from a vapour to a liquid

• To change the refrigerants state from a liquid to a vapour

What is the purpose of the RMD?

• Deliver refrigerant from the compressor

• Deliver refrigerant to the evaporator

• Store refrigerant

• Create a pressure difference

What is the purpose of the Liquid Drier?

• Remove debris from the system

• Remove moisture from the system

• Remove refrigerant from the system

• Remove air from the system

What is the purpose of the Liquid Receiver?

• Store excess refrigerant from the system

• Add more refrigerant to the system

• Supply the evaporator with liquid

• Make sure no liquid makes it to the compressor

Sensible Heat is?

• Heat required to cause a change in temperature, but not a change of state

• Heat required to cause a change of state, but not a change in temperature

• Heat that does nothing

Latent Heat is?

• Heat required to cause a change in temperature, but not a change of state

• Heat required to cause a change of state, but not a change in temperature

• Heat that does nothing

Saturation point is the pressure/temperature that a refrigerant will begin to change state.

• True

• False