ESCO A/C Exam Questions and Answers 100% Pass

ESCO A/C Exam Questions and Answers 100% Pass heat which causes a change in temperature of a substance is called - sensible heat Heat added to a substance without a rise in temperature - latent heat of vaporization Heat added to the refrigerant in a vapor state after the evaporation process is called - superheat scroll compressor move refrigerant by - involute spirals the movement of heat by way of fluid is called - convection the movement of heat by direct contact is - conduction the standard unit for measuring the quantity of heat in a substance is - btu 2 100% Pass Guarantee Katelyn Whitman, All Rights refrigerant gives up heat when - it condenses why must refrigerant in the suction line be slightly warmer than the saturation temperature? - prevent liquid slugging of the compressor the state of the refrigerant in the suction line should be - low pressure / low temperature vapor the state of the refrigerant entering the condenser is - high pressure / highly superheated vaoor the evaporator - Transfers heat from the refrigerated space to the refrigerant which of the following is not a thermodynamic property of refrigerants - flammability The sequential order of steps in the vapor compressions process are - compression, condensation, expansion, vaporization if a 30 pound cylinder of reclaimed R 410 a refrigerant has been stored overnight at 70° the pressure in the cylinder should be approximately - 201 psig 3 100% Pass Guarantee Katelyn Whitman, All Rights fan airflow pressures are usually measured in - inches of water column 0 pounds per square inch absolute is - A pressure which cannot be further reduced 0 pounds per square inch gauge is - The same as atmospheric pressure The temperature at which moisture will start to condense from the air is called - Dewpoint temperature compound pressure gauge measures - pressure and vacuum