凝汽器热负荷（condenser duty condenser loAd）
凝汽器热负荷（condenser duty condenser loAd）
相关考题：
()throttlestheliquidrefrigerantandmaintainsthepressuredifferencebetweenthecondenserandtheevaporator。 A、TheexpansionvalveB、CompressorC、EvaporatorD、Condenser
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?A.A shortage of liquid refrigerant.B.Excessive frost on the evaporator.C.Excessive condenser cooling water.D.Insufficient condenser cooling water flow.
单选题Low compressor head pressure in a refrigeration system can be caused by（）.Ainsufficient condenser cooling waterBexcessive condenser cooling waterCair in the refrigeration systemDexcessive refrigerant in the system
单选题Which of the conditions listed will cause a refrigeration compressor to run constantly without simultaneously decreasing the temperature in the refrigerated space?（）AShortage of refrigerant oilBSlight shortage of refrigerantCExcessive condenser cooling water flowDFaulty expansion valve
单选题Refrigerant enters the condenser as a （）.Ahigh pressure liquidBlow pressure vaporChigh pressure vaporDlow pressure liquid
单选题Air that may enter a refrigeration plant tends to collect in the （）.Aupper part of the receiverBupper part of the condenserCdown stream end of the cooling coilDoutlet end of the condenser
单选题Tube leaks in the distillate cooler of a two stage flash evaporator will result in （）.Aloss of second stage vacuumBcontamination of the distillateClower feed inlet temperatureDcontamination of the second stage condenser
单选题If a refrigeration compressor is running continuously without lowering the temperature in the refrigerated space, the trouble may be （）.Aa shortage of compressor oilBwarm food in the refrigeratorCexcessive condenser cooling waterDa shortage of refrigerant
单选题Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?（）AA shortage of liquid refrigerantBExcessive frost on the evaporatorCExcessive condenser cooling waterDInsufficient condenser cooling water flow
单选题If the temperature in the icebox is too high, the trouble could be（）Aa clogged scale trapBair in the systemCautomatic controls not functioning properlyDinsufficient cooling water to the condenser
单选题For a flash type evaporator, a demister is located the condenser（）AAfterBbeforeCinsideDoutside
单选题Excessively warm water leaving condenser may be caused by（）Afouled tubes in shell and tube condenserBtoo little or too warm condenser waterCair or non-condensable gas in systemDovercharge of refrigerant
单选题（） is used for sensing the temperature of the room in the air condition system.AAn expansion valveBAn evaporatorCA thermostatDA condenser
单选题Early models of the flash-type evaporators used a separate shell-and-tube heat exchanger as the air ejector condenser.More recent models use a combined air ejector condenser with the（）Adistilling condenserBsalt water feed heaterCdistillate coolerDflash chamber
单选题The inner part of the condenser should be cleaned with （）.Agas oilBdiesel oilCchemical compoundDFreon-12
单选题In a refrigeration system, if the cooling water to the condenser fails, the（）.Abox temperature solenoid valve will closeBexpansion valve will closeCcompressor will shutdownDking valve will open
单选题Which of the listed components is considered to separate the high pressure side of a refrigeration cycle from the low pressure side of the cycle?（）AThe condenser and the expansion valveBThe king valve and the solenoid valveCThe compressor and the expansion valveDThe condenser and the solenoid valve