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     EduGorilla 
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    A refrigerator uses R-134a as its refrigerant and operates on an ideal vapour-compression refrigeration cycle between 0.14 MPa and 0.8 MPa. If the mass flow rate of the refrigerant is 0.05 kg/s, the rate of heat rejection to the environment is kW.
    Given data:
    At P = 0.14 MPa, h = 236.04 kJ/kg, s=0.9322 kJ/kg-K
    At P = 0.8 MPa, h = 272.05 kJ/kg (superheated vapour)
    At P = 0.8MPa, h = 93.42 kJ/kg (saturated liquid)

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