A.one size larger than the pump discharge nozzle
B.the same size as the pump discharge nozzle
C.one size smaller than the pump discharge nozzle
D.installed with a short radius elbow at the pump
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A.purge the condenser if the waterside is dirty
B.check for proper water flow through the condenser
C.increase the high pressure cutout setting
D.reduce the cooling water flow
A.Red
B.White
C.Blue
D.Yellow
A.the flashing of the feed water
B.the condensation of the saltwater feed
C.air ejectors, eductors, or a separate vacuum pump
D.condensation of the distillate
A.under heavy loads
B.during hot gas defrost
C.under light loads
D.during starting conditions
A.Excessive compression in the cylinder
B.A broken intake valve
C.A dirty inlet filter element
D.An improperly adjusted discharge valve
最新試題
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?（）
If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should （）.
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
If the thermal bulb of an expansion valve is incorrectly placed at the center of the coil instead of the end, it will （）.
A salinity indicator is used to determine the （）.
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
The general purpose of a heat exchanger is to （）.
A salinity indicator is used to determine the （）.
A pressure drop through the refrigerant liquid line may cause （）.