Answer to Question #150532 in Electrical Engineering for warda

Question #150532
1kg of air enclosed in a rigid container is initially at 4.8 bar and 150 °C. The container is heated until the temperature is 200 °C. Calculate the pressure of the air finally and the heat supplied during the process
1
Expert's answer
2020-12-22T05:04:34-0500

Given data

Mass of air = 1 kg

Initial temperature T1 = 150 + 273 = 423 K

Initial pressure P1 = 4.8 bar

Final temperature T2 = 200 + 273 = 473 K

The container is rigid (volume is constant)

From the ideal gas equation

= 5.37 bar

For isochoric process

Entropy change

= 0.08 kJ/kgK

Average temperature T =

Heat supplied = 



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