HVAC EXCELLENCE EXAM 2024 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; (example: liquid refrigerant to gas) this process la called? - ANSWERlatent heat Heat added to the refrigerant in vapor state after the evaporation process is called, - ANSWERsuperheat A scroll compressor moves refrigerant by means of; - ANSWERinvolute spirals The movement of heat by way of fluid or is called; air - ANSWERconvection The movement of heat through a solid object is called; - ANSWERradiation The standard unit for measuring the quantity of heat in a substance is - ANSWERBritish Thermal Unit A refrigerant gives up heat when it; - ANSWERit condenses Why must refrigerant in the suction line be slightly warmer than the saturation temperature? - ANSWERprevent liquid slugging of the 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., The state of the refrigerant in the suction line should be - ANSWERlow pressure/ low temperature vapor The state of the refrigerant entering the condenser is - ANSWERHigh Pressure/ Highly Superheated Vapor The Evaporator - ANSWERTransfers heat from the refrigerated space to the refrigerant The Evaporator - ANSWERTransfers heat from the refrigerated space to the refrigerant Which of the following is not a Thermodynamic Property of refrigerant - ANSWERFlammability The sequential order of steps in the vapor-compression process are: - A