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A steady stream of air enters a horizontal compressor at the rate of 0.02 kg/s. The air  temperature is 10o C at entry and 300o C at exit. The velocity of the air is 30 m/s at entry and  6 m/s at exit. During its passage through the compressor, the air experiences a heat loss of 105  kJ/kg of air. Calculate:  (a) The change in kinetic energy per kg of air  (b) The change in enthalpy per kg of air  (c) The work done per kg of air

A steady stream of air enters a horizontal compressor at the rate of 0.02 kg/s. The air  temperature is 10o C at entry and 300o C at exit. The velocity of the air is 30 m/s at entry and  6 m/s at exit. During its passage through the compressor, the air experiences a heat loss of 105  kJ/kg of air. Calculate:  (a) The change in kinetic energy per kg of air  (b) The change in enthalpy per kg of air  (c) The work done per kg of air

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A steady stream of air enters a horizontal compressor at the rate of 0.02 kg/s. The air 
temperature is 10o C at entry and 300o C at exit. The velocity of the air is 30 m/s at entry and 
6 m/s at exit. During its passage through the compressor, the air experiences a heat loss of 105 
kJ/kg of air. Calculate: 
(a) The change in kinetic energy per kg of air 
(b) The change in enthalpy per kg of air 
(c) The work done per kg of air 
(d) The power required to drive the compressor
(e) The volume of air entering the compressor per second 
(f) The flow area of the entry pipe if the entry pressure is 1 bar 
Take R = 0.287 kJ/kgK and cp = 1.005 kJ/kgK

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