A.a shortage of refrigerant
B.the compressor running continuously
C.liquid refrigerant returning to the compressor
D.the compressor short cycling on the high pressure cutout
您可能感興趣的試卷
你可能感興趣的試題
A.evaporation is accomplished in a vacuum
B.due to the higher temperature of the incoming feed
C.due to the latent heat of evaporation principle
D.evaporation in a submerged medium produces more distillate
A.the bow
B.the stem
C.the port side
D.the starboard side
A.the distillate produced has greater purity
B.no boiling occurs on heat transfer surfaces
C.evaporation occurs at a higher rate
D.the incoming feed is at a higher temperature
A.the system is fully charged
B.there is air leaking in from the condenser
C.ice crystals are forming in the refrigerant
D.the system contains less than a full charge of refrigerant
A.Simplex
B.Duplex
C.Canister
D.Bypass
最新試題
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will ().
The general purpose of a heat exchanger is to ().
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 ().
A salinity indicator is used to determine the ().
An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by ().
The major source of chemical contaminants in hydraulic fluid is ().
Which of the following statements is correct concerning heat transfer?()
If the thermal bulb of an expansion valve is incorrectly placed at the center of the coil instead of the end, it will ().
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should ().
An excessive charge of refrigerant in an air-cooled refrigeration system can cause ().