A condenser in a refrigerator receives a flow of R-410a at 3000 kPa, 60 °C, which is cooled by kitchen air coming in at 20 °C so the R-410a leaves

as saturated liquid at 40 °C and the air leave sat 30 °C. If the condenser should remove a total of 1 kW from the R-410a line, find the mass flowrate of both fluids. Do not use Cp for R-140a, because it changes phase. C, for air = 1.004 kJ/kg.K.