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In: Mechanical Engineering

An air conditioner using R134a as the working fluid operates on an ideal vapour compression system...

  1. An air conditioner using R134a as the working fluid operates on an ideal vapour compression system between 0.3 and 0.8 MPa. If the specified capacity for air conditioning is 20 kW. What would be its capacity for food freezing for which the evaporator temperature -20oC. Show the cycle on a PH diagram and explain the effect of the changes to the compressor and condenser respectively.

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