Air conditioning Certification practice test Questions and Verified Answers | Passed | A+
What is the movement of heat through space called? : Radiation A refrigerant release heat when : It condenses Why is it desirable for refrigerant in the suction line to be slightly superheated? : 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? : 121 psig 2 14.7 psia( pouds per square inch absolute) is : Approximately 0 PSIG What is the main fuction of an air condition condenser? : To remove heat from the refrigerant Refrigerant R-134a vapor enters the condenser at 124 psig, 100 degrees F. It leaves the condenser at 80 degreesF. What will be the approximate pressure? : 124 psig (the pressure should not change entering or leaving the condenser) Which of the following CANNOT be used as a low ambient temperature control? : Crankcase regulating valve When testing the efficiency of a (10 seer are lower) air cooled condenser, the refrigerant condensing temperature should be no more than_______ higher than the entering air temperature : Approximately 30 degrees F 3 When testing the efficiency of a water cooled condenser, the refrigerant condensing temperature should be no more _____ higher than the leaving water temperature. : 10 degrees F
Document information
- Uploaded on
- June 5, 2024
- Number of pages
- 17
- Written in
- 2023/2024
- Type
- Exam (elaborations)
- Contains
- Questions & answers
