Air cooled condenser Study guides, Class notes & Summaries

1) Describe the ship's service air compressor in the engine room (not the AMR): what is the approximate receiver pressure, how is the coolant oil level checked, and how is coolant oil added? - Screw type Atlas-Copco, Refrigeration (dryer) cooled 2) Describe the operation of the compressed air dryers and their location, what air system(s) do they serve? - Refrigeration systems that serve to condense moisture out of air. They serve the service and control air compressors (Atlas Copco) Atlas C...

CDC: 3E151 - HVAC/R JOURNEYMAN VOLUME 5 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED (801) How much sensible heat is added if the temperature of air increases from 70 to 80 F 10 F (801) What occurs during the latent heat of condensation? Vapor turns to a liquid (801) What determines the pressure required to achieve a specific flow rate? Design of the piping system (802) What three processes take place in the condenser? Desuperheating, condensing, and subcooling (802) The...

NATE Light Commercial Refrigeration What is the MOST important aspect about installing a rooftop package unit? - The roof will support the weight What could be at fault of an air cooled system that operates 50°F over ambient temperature? - An overcharge, air in the system, or air re-circulating over the condenser Where should the sensing bulb on a TXV be located? - As close to the evaporator as possible on a horizontal line When a transformers secondary windings are wired in paralle...

Heat which causes a change in temperature of a substance is called - ANSWERSensible heat Heat added to a substance without a rise in temperature - ANSWERLatent heat Heat added to the refrigerant in a vapor state after the evaporation process is called - ANSWERSuperheat Scroll compressor move refrigerant by - ANSWERInvolute Spirals The movement of heat by way of fluid is called - ANSWERConvection The movement of heat by direct contact is - ANSWERConduction The standard unit for ...

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

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 14.7 psia( pouds per square inch absolute) is - Approximately 0 PSIG What is...

How a pump down system works - ANSWER the thermostat will open at the set temperature it controls the liquid line solenoid valve the valve will close and the system will pump down and the low pressure switch will open and turn off the compressor see unit 21 pump down cycle and unit 25/ 25.18 automatic pumpdowm systems No oil trap in the discharge line can cause - ANSWER compressor valve damage if the condenser is on the roof no oil getting back to the compressor see internet oil trap If th...

Air Conditioning Certification Exam (Exam Code A-02) Questions With Accurate Answers. Heat which causes a change in temperature of a substance is called; - answersensible heat. Heat which causes a change in state of a material without a change in temperature is called; - answerlatent heat. Heat which is added to a vapor after the change of state occurs is called; - answersuperheat. Heat can travel by; - answerconduction, convection, radiation. The movement of heat by way of fluid (or air...

ESCO Air Conditioning Exam Complete Guide Heat that causes a change in the temperature of a substance is called ️sensible heat. Heat added to a substance without causing a rise in temperature is called ️latent heat. Heat added to the refrigerant in a vapor state after the evaporation process is called ️superheat. Scroll compressors move refrigerant using ️involute spirals. The transfer of heat via a fluid is called ️convection. The transfer of heat through direct contact is calle...

Heat which causes a change in temperature of a substance is called - Sensible heat Heat added to a substance without a rise in temperature - Latent heat Heat added to the refrigerant in a vapor state after the evaporation process is called - Superheat Scroll compressor move refrigerant by - Involute Spirals The movement of heat by way of fluid is called - Convection The movement of heat by direct contact is - Conduction The standard unit for measuring the quantity of heat in a substance is...