Consider a refrigeration system based on an ideal vapor-compression cycle using R-134a as the refrigerant. It operates
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Consider a refrigeration system based on an ideal vapor-compression cycle using R-134a as the refrigerant. It operates between 0.7 MPa and 0.12 MPa with a fl ow rate of 0.5 mol/s. Calculate the following:
(a) the rate of heat removal from the refrigerated unit
(b) the power input needed to the compressor
(c) the COP The properties of R-134a can be found at http://webbook.nist.gov/chemistry/fl uid/.
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