Air conditioning c Study guides, Class notes & Summaries

What is the movement of heat through space called? - ANSWER Radiation A refrigerant release heat when - ANSWER It condenses Why is it desirable for refrigerant in the suction line to be slightly superheated? - ANSWER To insure liquid refrigerant does not enter the compressor A 30 pound cylinder of reclaimed R-22 refrigerant has been stored over night at 70 degrees F. What should be the approximate pressure in the cylinder? - ANSWER 121 psig 14.7 psia( pouds per square inch absolute) ...

If lubricant is removed by recovery equipment during system refrigerant removal, what must be done with the lubricant? - Answer Re-install lubricant removed by the recovery equipment Before reuse, what must be done with HFC-134a that has been recovered from a mobile A/C system using recovery-only equipment? - Answer Question 2 options: Recycle the HFC-134a before reuse using certified equipment When can HFC-134a become combustible in a mobile air conditioning system? - Answer If shop air ...

Heat that causes change in temperature of a substance - Answer-sensible heat Heat that is added with out a rise in temperature - Answer-latent heat Heat added to refrigerant in vapor state after evaporation process is - Answer-super heat Scroll compressor moves refrigerant by means of - Answer-involute spirals movement of heat by way of fluid or air - Answer-convection movement of heat by way of solid - Answer-conduction Standard unit for measuring heat - Answer-BTU refrigerant gives up h...

Air conditioning Certification practice te What is the movement of heat through space called? - ANSWER Radiation A refrigerant release heat when - ANSWER It condenses Why is it desirable for refrigerant in the suction line to be slightly superheated? - ANSWER To insure liquid refrigerant does not enter the compressor A 30 pound cylinder of reclaimed R-22 refrigerant has been stored over night at 70 degrees F. What should be the approximate pressure in the cylinder? - ANSWER 121 psig ...

Air Conditioning Certification Exam (Exam Code A-02) Questions with 100% correct answers

Air Conditioning Certification Exam (Exam Code A-02)|| 100 Questions|| Accurate 100%Heat which causes a change in temperature of a substance is called; - ANSWER sensible heat. Heat which causes a change in state of a material without a change in temperature is called; - ANSWER latent heat. Heat which is added to a vapor after the change of state occurs is called; - ANSWER superheat. Heat can travel by; - ANSWER conduction, convection, radiation. The movement of heat by way of fluid (...

Air conditioning Certification practice test Questions With Complete Solutions

R-134a vapor enters the condenser at 124 psig. 100F. It leaves as a liquid from the condenser sub-cooled 20F. and the pressure will be approximately - ANSWER 124 psi A scroll compressor moves refrigerant by means of - ANSWER involute spirals A TXV sensing bulb that is loose from the suction line will cause - ANSWER High suction pressure and higher than normal discharge pressure If 10 pounds of refrigerant passing through a water cooled condenser rejects 20 BTUs of heat per pound, then 10 p...

A CCOT system has a high high side. Technician A says to suspect the thermostatic expansion valve. Technician B says this system contains an orifice tube. Who is correct? - ANSWER-TECH B is correct. A clogged orifice tube will result in high high side pressure. It can become clogged with contaminants, debris from a damaged compressor, or a broken desiccant bag releasing desiccant into the refrigerant. A vehicle's air conditioning performance is reduced at low speeds and stop lights, but cool...