Agricultural Engineering > GATE 2020 > Refrigeration
A cold storage takes 5 hours to bring down the temperature of 100 metric tons of potato from 35 °C to 8 °C. The specific heat capacity of potato is 3.1 kJ kg-1 °C-1. The coefficient of performance (COP) and the latent heat of vapourisation of the refrigerant (R-22) at an evaporation temperature of -10 °C are 3.66 and 230 kJ kg-1, respectively. Neglecting respiration heat load of potato, and assuming no power loss, the values of refrigerant flow rate and the power input to the compressor are
A
121.3 kg min-1 and 127.1 kW
B
124.7 kg min-1 and 121.3 kW
C
127.1 kg min-1 and 121.3 kW
D
124.7 kg min-1 and 127.1 kW

Correct : a

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