HVAC Excellence Exam Questions And Answers |Latest 2025/2026 | Guaranteed Success

HVAC Excellence Exam Questions And Answers |Latest 2025/2026 | Guaranteed Success. Heat which causes a change in temperature of a substance is called - answer-sensible heat, Heat added to a substance without a rise in temperature; (example: liquid refrigerant to gas) this process la called? - answer-latent heat Heat added to the refrigerant in vapor state after the evaporation process is called, - answer-superheat A scroll compressor moves refrigerant by means of; - answer-involute spirals The movement of heat by way of fluid or is called; air - answer-convection The movement of heat through a solid object is called; - answer-radiation The standard unit for measuring the quantity of heat in a substance is - answer-British Thermal Unit A refrigerant gives up heat when it; - answer-it 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; - answer-insure liquid refrigerant does not enter the compressor., The state of the refrigerant in the suction line should be - answer-low pressure/ low temperature vaporThe state of the refrigerant entering the condenser is - answer-High Pressure/ Highly Superheated Vapor The Evaporator - answer-Transfers heat from the refrigerated space to the refrigerant The Evaporator - answer-Transfers heat from the refrigerated space to the refrigerant Which of the following is not a Thermodynamic Property of refrigerant - answer-Flammability