A.passing it through the expansion valve
B.condensing refrigerant in the system condenser
C.passing the gaseous refrigerant through the heat interchanger on the suction side of the compressor
D.maintaining a high pressure on the systems receiver
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A.compressor
B.condenser
C.receiver
D.evaporator
A.secure and tag the electrical circuit
B.place a crow bar in the flywheel of the unit
C.inform all persons in the area not to start the unit
D.make a log book entry
A.stuffing box diameter
B.direction of rotation of the screws
C.pitch of the screws
D.type of driving gears
A.dew point temperature
B.condensation temperature
C.psychometric temperature
D.absolute humidity temperature
A.low viscosity index
B.high viscosity index
C.high neutralization number
D.low demulsibility quality
最新試題
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）
A pressure drop through the refrigerant liquid line may cause （）.
Which of the following statements is correct concerning heat transfer?（）
The temperature differential occurring between the inlet temperature of the fluid to be cooled and the outlet temperature of the cooling medium in a shell-and-tube heat exchanger is greatest in which of the flow designs listed?（）
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
A salinity indicator is used to determine the （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
If the suction pressure at the refrigeration compressor is below normal, the cause can be（）.