HVAC Air Condition Esco 2022 Questions & Answers 100% Correct!

Heat which causes a change in temperature of a substance is called - ANSWERSensible Heat Heat added to a substance without a rise in temperature is called - ANSWERLatent Heat Heat added to refrigerant in a vapor state after the evaporation process is called - ANSWERSuperheat A scroll compressor moved refrigerant by means of - ANSWERInvolute spirals The movement of heat by way of fluid is called - ANSWERConvection The movement of heat through a solid object is called - ANSWERConduction The standard unit for measuring the quantity of heat in a substance - ANSWERBritish Thermal Unit A refrigerant gives up heat when it - ANSWERCondenses Why must refrigerant in the suction line be slightly warmer than the saturation temperature? - ANSWERPrevent liquid slugging of compressor It is desirable for refrigerant in the suction line to be slightly superheated in order to - ANSWERInsure liquid refrigerant does not enter the compressor A mechanical shaft seal is necessary on - ANSWERSemi-hermetic compressor Liquid slugging is - ANSWERLiquid refrigerant in the compressor clearance space The clearance space in a reciprocating compressor - ANSWERVaries depending on compressor speed Which of the following types of air conditioning compressors is most energy efficient - ANSWERCentrifugal Which of the following represent the right order for the functions of a condenser? - ANSWERDe-superheat, condenses, sub-cools Refrigerant R-134a vapor enters the compressor at 124 psig, 100°f. It leaves as a liquid from the condenser sub-cooled 20°f, and the pressure will approximately - ANSWER18.4 psig