Hvac r 410a - Study guides, Class notes & Summaries

HVAC EXCELLENCE ALREADY GRADED A Heat which causes a change in temperature of a substance is called ️sensible heat, Heat added to a substance without a rise in temperature; (example: liquid refrigerant to gas) this process la called? ️latent heat Heat added to the refrigerant in vapor state after the evaporation process is called, ️superheat A scroll compressor moves refrigerant by means of; ️involute spirals The movement of heat by way of fluid or is called; air ️convectio...

FCC HVAC Study Guide Questions And Answers what is the name of EPA's program that identifies refrigerants with lower overall risks to human health and the environment? - ANSWER- the Significant New Alternatives Policy(SNAP) Program. what is a lawful use of HCFC-22? - ANSWER- Charging any new system designed for R-407c. how does cooling occur in a direct expansion vapor compression refrigeration system? - ANSWER- when the liquid refrigerant is vaporized. which process applies to cle...

CAMT Exam With Correct Solutions. The thermostat located inside of a clothes dryer ensures that which other component turns on and off as needed? Which type of voltage is used by HVAC controls and thermostats? A maintenance technician smells a strong odor of gas while standing next to a water heater that is undergoing some repairs. The room is dimly lit, but the technician believes the gas is leaking from the water heater. Before leaving the area, which step would be MOST appropriate for the ...

559 Journeyman Mechanical Exam HVAC Complete Questions and Answers Which Type of air-conditoning system is most likely to leak refrigerant into a structure? Direct, Indirect, Evaporative or Split? - CORRECT ANSWER-Direct : 2015 IMC 1103.3.2 When mechanical equipment is located on a flat roof that is more than 30 inches above grade, how far from the roofs edge must the equipment be located before a guard rail is not needed? less than 6', 9', 4' or more than 10'? - CORRECT ANSWER-Mo...

FCC HVAC Study Guide Questions And Answers what is the name of EPA's program that identifies refrigerants with lower overall risks to human health and the environment? - ANSWER- the Significant New Alternatives Policy(SNAP) Program. what is a lawful use of HCFC-22? - ANSWER- Charging any new system designed for R-407c. how does cooling occur in a direct expansion vapor compression refrigeration system? - ANSWER- when the liquid refrigerant is vaporized. which process applies to cle...

HVAC EXCELLENCE Exam Questions With Verified Answers 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 ...

FCC HVAC Study Guide Questions And Answers what is the name of EPA's program that identifies refrigerants with lower overall risks to human health and the environment? - ANSWER- the Significant New Alternatives Policy(SNAP) Program. what is a lawful use of HCFC-22? - ANSWER- Charging any new system designed for R-407c. how does cooling occur in a direct expansion vapor compression refrigeration system? - ANSWER- when the liquid refrigerant is vaporized. which process applies to clea...

The greatest effect refrigeration has is on the ____________ - Answer- Stratosphere What is the nickname of the stratosphere? - Answer- Earth's security blanket The stratosphere is __________ ______ above sea level - Answer- 10-30 miles The stratosphere is made of _____ - Answer- Ozone What is the function of the stratosphere? - Answer- To protect us from UV radiation and maintain stable earth temperatures Effects of Ozone Depletion? - Answer- Crop loss; skin cancer; deforestatio...

a (Centrifugal) Which of the following compressors are considered a dynamic compressor? a. Centrifugal b. Reciprocating d. Rotary c. Scroll b (Superheated vapor / sub cooled liquid) What is the condition of the refrigerant as it enters and leaves the condensing coil of a typical light commercial HVAC system? a. Vapor / liquid b. Superheated vapor / sub cooled liquid c. Saturated vapor / saturated liquid d. Hot gas / cool liquid b (Thermal expansion valve) Which one o...