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If the compound vapour compression system is working under the load on the evaporator of 15 TR, the enthalpies corresponding to the evaporator are 1400 and 400 kJ/kg respectively. What is the value of the mass flow rate through the evaporator?

If the compound vapour compression system is working under the load on the evaporator of 15 TR, the enthalpies corresponding to the evaporator are 1400 and 400 kJ/kg respectively. What is the value of the mass flow rate through the evaporator? Correct Answer 3.15

GiveR.E. = 15 TR = 15 x 210 = 3150 kJ/min h1 = 1400 kJ/kg and h7 = 400 kJ/kg As, m = 210 Q / (h1 – h7) = 3150 / (1400 – 400) = 3150 / 1000 = 3.15.

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