Articles Posted in the " Vapor Compression Refrigeration " Category

  • Vapor compression Refrigeration: Parts-functions-processes

    Vapor compression Refrigeration: Parts-functions-processes

    Vapor compression Refrigeration: Parts-functions-processes Keywords: compressor-liquid suction heat exchanger-condenser-receiver-accumulator Abstract Refrigeration is heat transfer from a low temperature to a high temperature. It cannot take place by itself. A complete refrigeration system is required. Its components and their functions and various processes to achieve refrigeration  help in understanding the whole process. Sr.No. System part Process […]


  • *mcqs: Vapor Compression Refrigeration

    *mcqs: Vapor Compression Refrigeration

    mcqs: Vapor Compression Refrigeration Keywords: ton of refrigeration-cooling effect-sub-cooling-COP Abstract Refrigeration is measured in tons of refrigeration. (1 ton = 211kJ/min of cooling effect). Cooling effect is caused by latent heat in vapor refrigeration while by sensible heat in gas refrigeration. Sub-cooling causes increase in COP of the system. One ton of refrigeration is the […]


  • mcq:  Super heating and Sub Cooling of refrigerants

    mcq: Super heating and Sub Cooling of refrigerants

    mcq: Super heating and Sub Cooling of refrigerants Keywords: degree of super heat-degree of sub-cooling-COP Abstract Up to 50C super heating increases the COP whereas any amount of sub-cooling increases the COP. Super heating as well as sub-cooling takes place at constant pressure. Super heat is applicable to the vapor phase. The sub cooling is […]


  • * * Short Interview Question Answers on vapor compression refrigeration

    * * Short Interview Question Answers on vapor compression refrigeration

     * Short Interview Question Answers on vapor compression refrigeration Keywords: dry-wet compression-solenoid valve-super heated Abstract Compressor is the heart of vapor compression refrigeration system. Theoretically dry and wet compression are considered. Wet compression is not used since compression of a liquid can cause a break down of the compressor. A solenoid valve is used in […]


  • * REVERSED CARNOT CYCLE

    * REVERSED CARNOT CYCLE

    REVERSED CARNOT CYCLE WHAT IS REVERSE CARNOT CYCLE? Reverse Carnot cycle will be  reverse of Carnot Cycle. It is also an ideal cycle. Reverse Carnot cycle consists of four processes in the sequence i.e. isothermal, isentropic, isothermal and isentropic processes.  An isothermal process has to be very very slow. An isentropic process has to be […]


  • * Short Interview Question Answers on Vapor Compression  and Vapor Absorption Refrigeration

    * Short Interview Question Answers on Vapor Compression  and Vapor Absorption Refrigeration

     Sort Interview Question Answers on Vapor Compression  and Vapor Absorption Refrigeration Q. Enumerate five distinctions between the vapor compression and vapor absorption refrigeration system. Differences between Vapor Compression and Vapor Absorption Refrigeration Sr.No. Item Vapor Compression Vapor Absorption  1. Low tons of cooling  Cheap Costly  2. 50 Tons of Refrigeration  Same cost Same cost  3. […]



  • * Short Interview Question Answers On Super heating and Sub-Cooling

    * Short Interview Question Answers On Super heating and Sub-Cooling

      Short Interview Question Answers On Super heating and Sub-Cooling  32. What is super heat OR degree of super heat? Difference of actual temperature and boiling temperature of a vapor at a certain pressure.For example: Normal Boiling Point (NBP) of R-22 is -410C at 1 atmosphere. Say in the vapor form it is at a temperature […]


  • * SHORT INTERVIEW QUESTION ANSWERS ON HEAT ENGINE / REFRIGERATOR / HEAT PUMP

    * SHORT INTERVIEW QUESTION ANSWERS ON HEAT ENGINE / REFRIGERATOR / HEAT PUMP

     SHORT INTERVIEW QUESTION ANSWERS ON HEAT ENGINE / REFRIGERATOR / HEAT PUMP COMPARE HEAT ENGINE, REFRIGERATOR AND A HEAT PUMP WHEN WORKING ON CARNOT CYCLE OR REVERSE CARNOT CYCLE   Heat Engine ηheat engine = (TH—TL)/TL COP refrigerator  = TL/(TH–TL) COPheat pump =Th/(TH–TL) In the case opf a heat engine, higher temperature is say > […]