A jet plane is flying at a speed of 1000 km/h. The ambient air pressure and temperature are 0.85 bar and 30 °C, respectively. The cockpit is to be maintained at 25 °C and 1 bar by using an air refrigeration system. The cooling load of the cockpit is (12 + 0.01 × X) TR. Ram efficiency is 90%. The compressor operates at an efficiency of 80% to increase the pressure by 5 times. The Isentropic efficiency of the cooler turbine is 85%. Pressure drop in the heat exchanger is 0.2 bar. Temperature of air leaving the heat exchanger and entering the cooling turbine is 50 °C. Find the quantity of air passed through the cooling turbine and COP of the system. X = 63 Last 3 digits of your student ID.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A jet plane is flying at a speed of 1000 km/h. The ambient air pressure and temperature are 0.85 bar and 30 °C, respectively. The cockpit is to be maintained at 25 °C and 1 bar by using an air refrigeration system. The cooling load of the cockpit is (12 + 0.01 × X) TR. Ram efficiency is 90%. The compressor operates at an efficiency of 80% to increase the pressure by 5 times. The Isentropic efficiency of the cooler turbine is 85%. Pressure drop in the heat exchanger is 0.2 bar. Temperature of air leaving the heat exchanger and entering the cooling turbine is 50 °C. Find the quantity of air passed through the cooling turbine and COP of the system. X = 63 Last 3 digits of your student ID.
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