food department is kept at -12°C by a refrigerator in an environment at 30°C. The total heat gain to the food department is estimated to be (3300 kJ/h )and the heat rejection in the kJ/h) A condenser...

L ——————————————————————————————— Use de Moivre's theorem to find all solutions to the following equations and plot the results on an Argand diagram. @ =1 ® =8 () ’=i e e


Extracted text: food department is kept at -12°C by a refrigerator in an environment at 30°C. The total heat gain to the food department is estimated to be (3300 kJ/h )and the heat rejection in the kJ/h) A condenser is (4800 Determine the power input to the compressor, in kW? and the COP of the refrigerator?