A.increase the capacity of the coil
B.increase the superheat at the bulb
C.deliver more refrigerant to the coil
D.decrease the capacity of the coil
您可能感興趣的試卷
你可能感興趣的試題
A.Centrifugal
B.Reciprocating
C.Gear
D.Rotary
A.a high suction head
B.rotating rings
C.badly worn bearings
D.a loose stuffing box gland
A.solenoid valve to seize
B.compressor to hunt
C.formation of flash gas in the liquid line
D.expansion valve to freeze open
A.insufficient condenser cooling water
B.excessive condenser cooling water
C.air in the refrigeration system
D.excessive refrigerant in the system
A.Thermal expansion valve frozen open
B.Suction gas heat exchanger bypassed
C.Condenser clogged or fouled
D.High pressure cutout switch inoperative
最新試題
Low compressor head pressure in a refrigeration system can be caused by（）.
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
Which of the following statements is correct concerning heat transfer?（）
An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of （）.
The rate of heat transfer from a hot region to a cold region is affected most by the （）.
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
A salinity indicator is used to determine the （）.
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.
The general purpose of a heat exchanger is to （）.
The control mode in which the final control element is moved from one of two flexed positions to the other is known as （）.