Articles Posted in the " Vapor Compression Refrigeration " Category

  • Vapor Compression Refrigeration

    Vapor Compression Refrigeration         Refrigeration Filling blanks Expansion valves          Refrigeration Filling Blanks Condensers        Q. A. Refrigeration         Refrigeration Compressors   Vapor Compression Refrigeration Refrigeration is heat transfer from a low temperature to a high temperature. It cannot take place by itself. Vapor compression refrigeration system is used to achieve it. Its components, their functions and […]

  • Mcq-Vapor Compression Refrigeration-2

    Mcq-Vapor Compression Refrigeration-2       Open and Hermetically sealed compressor units      Refrigeration equipment-2      Refrigeration equipment-1       MCQ non-conventional refrigeration Mcq-Vapor Compression Refrigeration-2 Most commonly used method of refrigeration is vapor compression refrigeration. Cooling capacity is the cooling produced per minute. Refrigeration is measured in tons of refrigeration. (1 ton = 211kJ/min of cooling effect). Cooling […]

  • mcq:  Super heating and Sub Cooling

    mcq: Super heating and Sub Cooling

    mcq: Super heating and Sub Cooling Super heating as well as sub-cooling takes place at constant pressure. Super heat is applicable to the vapor phase. The sub cooling is applicable to liquid phase. Degree of super heat is used with (a) Solids (b) Liquids (c) Vapors (d) None (Ans:c) Standard degree of super heat is […]

  • Refrigeration-Vapor Compression-Interview  Short Question Answers

    Refrigeration-Vapor Compression-Interview Short Question Answers

    Refrigeration-Vapor Compression-Interview Short Question Answers Q. What is meaning of DRY compression? Dry compression: When the refrigerant vapor is dry saturated at the START of compression. Compression start from Dry  saturated vapor condition and ends in the super heated region as shown in the Figure by the process 1-2.   Figure: 1–2  Dry Compression on […]

  • Clearance Volumetric Efficiency

    Clearance Volumetric Efficiency

    Volumetric Efficiency NEED OF CLEARANCE IN THE CYLINDER Piston is moving in the cylinder. It is desirable that the piston does not strike the cylinder head cover. To achieve this there is a small space between the cylinder head and the extreme position of piston. The volume of this space is called clearance volume or […]

  • Refrigeration-Basics


      Refrigeration-Basics POINTS USED ON p-h chart, refer Fig. Point 1 outlet of evaporator as well as inlet of compressor Point 2 outlet of compressor as well as inlet of condenser Point 3 outlet of condenser as well as inlet of expansion valve Point 4 outlet of expansion valve as well as inlet of evaporator In the theoretical analysis, no super […]

  • Refrigeration- Vapor Compression Cycles

    Refrigeration- Vapor Compression Cycles

    REFRIGERATION-VAPOR COMPRESSION  CYCLES   Theoretical vapor compression cycle: Dry saturated vapor enters the compressor( point 1), isentropic compression (process 1- 2), saturated liquid comes out of condenser(point 3) and throttling expansion (process 3- 4) in the expansion valve. 1-2 process is isen-tropic compression 2-2′ process  is de-super-heating at constant pressure in the condenser 2′-3 process […]

  • Refrigeration- Vapor compression-2

    Refrigeration- Vapor compression-2

    Refrigeration- Vapor compression MAIN COMPONENTS OF A VAPOR COMPRESSION REFRIGERATION CYCLE There are six main components in a refrigeration system: (i) The Compressor (ii) The Condenser (iii) The Metering Device or expansion valve (iv) The Evaporator (v) Piping material (vi) Refrigerant COMPRESSOR: It is heart of the refrigeration system. It circulates the refrigerant in the system like the heart of a […]