Articles Posted in the " Vapor Compression Refrigeration " Category

  • VAPOR COMPRESSION REFRIGERATION EQUIPMENTS

    VAPOR COMPRESSION REFRIGERATION EQUIPMENTS

    VAPOR COMPRESSION REFRIGERATION EQUIPMENTS  Equipments of vapor compression systems include compressors, condensers, evaporators & expansion valves. These also include piping and various controls. COMPRESSORS (i)  Reciprocating compressors: used with (a) lower boiling temperature (much below 00C) refrigerants (ii)  low specific volume at – 150C, (c) (pcond – –pevap) > 3.5 atm (  R-22, NH3, etc.). […]


  • VAPOR COMPRESSION REFRIGERATION MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

    VAPOR COMPRESSION REFRIGERATION MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

    VAPOR COMPRESSION REFRIGERATION MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS MCQ increases clarity and understanding. 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 effect is caused by latent heat in vapor refrigeration […]


  • VAPOR COMPRESSION REFRIGERATION QUESTION ANSWERS

    VAPOR COMPRESSION REFRIGERATION QUESTION ANSWERS

    VAPOR COMPRESSION REFRIGERATION QUESTION ANSWERS Question answers on basics of refrigeration increases the level of understanding very deeply. Compressor, condenser, receiver, evaporator are essential components of refrigeration. Condensing unit is motor, compressor, condenser and receiver. Different prime movers run refrigeration units. What is the meaning of condensing unit? Condensing unit is the assembly of motor, […]


  • 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 […]


  • CLERANCE VOLUMETRIC EFFICIENCY

    CLERANCE VOLUMETRIC EFFICIENCY

    https://www.mesubjects.net/wp-admin/post.php?post=7801&action=edit     Centri and Axial compressors https://www.mesubjects.net/wp-admin/post.php?post=7773&action=edit      Recip and rotary Compressors https://www.mesubjects.net/wp-admin/post.php?post=7649&action=edit      Air compressors https://www.mesubjects.net/wp-admin/post.php?post=7344&action=edit       Fill Blanks-compressor https://www.mesubjects.net/wp-admin/post.php?post=6740&action=edit      Refri Reciprocating compressors CLERANCE VOLUMETRIC EFFICIENCY Clearance is a must in a compressor. It does not allow the piston to  strike the cylinder head. Clearance does not permit to such full amount of gas. Exhaust gases left in […]


  • SIMPLE VAPOR COMPRESSION REFRIGERATION CYCLE

    SIMPLE VAPOR COMPRESSION REFRIGERATION CYCLE

    SIMPLE VAPOR COMPRESSION REFRIGERATION CYCLE There are four main processes in a vapor compression refrigeration cycle. (i) Compression (ii) Condensation (iii) Expansion (iv) Evaporation It is most commonly used & the oldest refrigeration cycle. It is a single stage refrigeration cycle. REFRIGERATION CYCLE SEQUENCE Clockwise sequence of components is compressor,  condenser,  expansion valve, evaporator and […]