单选题Both the temperature and the pressure of the refrigerant are increased in the （）.AcompressorBcondenserCevaporatorDexpansion valve
单选题
Both the temperature and the pressure of the refrigerant are increased in the （）.
A
compressor
B
condenser
C
evaporator
D
expansion valve
参考解析
解析：
暂无解析
相关考题：
The temperature of the refrigerant in the evaporator coil depends mostly upon the ___.A.refrigerant pressure in the evaporatorB.cooling water temperature to the condenserC.heat load in the refrigerator compartmentD.solenoid valve in the liquid line
If the superheat value of a thermostatic expansion valve is set too low, the _.A.the suction line will be abnormally cold and liquid may slug back to the compressorB.the suction line will be hot due to a reduced amount of refrigerant returning to the compressorC.the temperature of the refrigerant within the condenser will remain the sameD.the temperature of the refrigerant passing through the sub-cooler will decrease
In a chilled(冷的) water air conditioning unit using a reciprocating compressor, the refrigerating effect of the primary refrigerant can be increased by ______.A.increasing refrigerant pressure in the coilB.increasing chilled water flow through the coolerC.sub-cooling the refrigerant in the condenserD.superheating the refrigerant in the compressor
Sub-cooling is a method of reducing the temperature of the liquid refrigerant below its ______.A.freezing pointB.floc point(浊点)C.condensing temperatureD.compression temperature
After a cold front passes，the barometric pressure______．A.drops，and the temperature dropsB.drops ， and the temperature risesC.rises，and the temperature dropsD.rises，and the temperature rises
An isotherm is ______.A.a line on a weather map connecting equal points of both temperature and pressureB.an instrument that measures the climatological effects of temperatureC.a line connecting points of equal barometric pressure on a weather mapD.a line connecting points of equal temperature on a weather map
单选题When the temperature of the refrigerant flowing out from the condenser is below the condensing temperature, it is said to be （）.AdryBwetCsuper-cooledDsuperheated
单选题As the refrigerant passes through the valve orifice, its pressure is reduced and part of the refrigerant turns into （）.AliquidBoily mixtureCemulsionDvapor
单选题Refrigerant enters the condenser as a （）.Ahigh pressure liquidBlow pressure vaporChigh pressure vaporDlow pressure liquid
单选题In a compression refrigeration plant the refrigerant is under low pressure in the （） and under high pressure in the （）.Acompressor；condenserBcondenser；evaporatorCthrottle valve；evaporatorDevaporator；condenser
单选题An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by （）.Arestriction in refrigerant pipingBair and non-condensable gases in the condenserCwater in the refrigerantDflooding back of liquid refrigerant from the evaporator
单选题Water evaporates or steam condenses at the saturation temperature, which depends upon the pressure, the higher the pressure （） the saturation temperature.Athe moreBthe higherCthe lowerDthe highest
单选题How are the pressure and temperature affected in a diesel engine cylinder during compression?（）APressure and temperature decreaseBPressure and temperature increaseCPressure decreases and temperature increasesDPressure increases and temperature decreases
单选题In a chilled water air conditioning unit using a reciprocating compressor, the refrigerating effect of the primary refrigerant can be increased by （）.Aincreasing refrigerant pressure in the coilBincreasing chilled water flow through the coolerCsub-cooling the refrigerant in the condenserDsuperheating the refrigerant in the compressor
单选题The temperature of the refrigerant in the evaporator coil depends mostly upon the （）.Arefrigerant pressure in the evaporatorBcooling water temperature to the condenserCheat load in the refrigerator compartmentDsolenoid valve in the liquid line
单选题High speed aircraft is made of metals that can（）both high temperature and pressure.Astand byBput up withCwithholdDwithstand
单选题A refrigerant with oil in solution has a （）.Ahigher boiling temperature for a given pressure than does a pure refrigerantBlower boiling temperature for a given pressure than does a pure refrigerantCboiling pressure equal to that of a pure refrigerant at a given pressureDboiling point will not be affected by entrained oil
单选题In terms of pressure and temperature in the refrigerant in the compressor, what happens to the primary?（）Aits pressure and temperature are both loweredBits pressure and temperature are both raisedCits pressure is lowered and its temperature is raisedDits pressure is raised and its temperature is lowered
单选题The greater the pressure difference between a high and a low pressure center，the（）.Adryer the air mass will beBcooler the temperature will beCgreater the force of the wind will beDwarmer the temperature will be
单选题The refrigerant leaves the evaporator of a refrigeration system as a low pressure （）.Asub-cooled liquidBhigh temperature liquidCoil saturated liquidDsuperheated vapor
单选题The thermostatic valve has a throttling action, that is to say the valve can（）Astop the refrigerant from flowingBforce the refrigerant to flowCcause the refrigerant pressure to riseDcause the refrigerant pressure to fall
单选题Sub-cooling is a method of reducing the temperature of the liquid refrigerant below its （）.Afreezing pointBfloc pointCcondensing temperatureDcompression temperature
单选题When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.Aincrease the amount of cooling water to the condenserBdecrease the amount of cooling water to the condenserCadd more refrigerant to the systemDremove some refrigerant from the system
单选题Thermostatic expansion valves can be adjusted for （）.Asuction pressure onlyBhead pressure onlyCsuperheat onlyDsuction pressure and box temperature
单选题Cloud formations are minimal when the（）.Asurface temperature and temperature aloft are equalBsurface temperature and temperature aloft differ greatlyCbarometric pressure is very lowDrelative humidity is very high
单选题After a cold front passes，the barometric pressure（）.Adrops，and the temperature dropsBdrops，and the temperature risesCrises，and the temperature dropsDrises，and the temperature rises
单选题If the compressor-discharge temperature is higher than the receiver temperature（）Aincrease the amount of cooling water to the condenserBdecrease the amount of cooling water to the condenserCadd more refrigerant to the systemDremove some of the refrigerant from the system