HVAC EXCELLENCE QUESTIONS WITH 100 % CORRECT ANSWERS | VERIFIED

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, - Answersuperheat 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? - Answer-prevent 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 vapor The 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 refrigerantThe Evaporator - Answer-Transfers heat from the refrigerated space to the refrigerant Which of the following is not a Thermodynamic Property of refrigerant - Answer-Flammability The sequential order of steps in the vapor-compression process are: - Answer-Compression, Condensation, Expansion, Vaporization If a 30 lb container of $-410A refrigerant has been stored over night at 70 degrees F, the pressure in the cylinder should be approximately - Answer-201 Degrees Faranheit Fan Airflow pressures are usually measured in - Answer-Inches of water column Zero Psia (pounds per square inch absolute) is - Answer-a pressure which cannot be further reduced