The properties at the inlet and the exit states of the air compressor are shown in the figure. The mass flow rate of air is 0.02 kg/s. The compressor loses heat at 3.5 kW. By making an energy balance of the system, the computed value of Win in kW is

The properties at the inlet and the exit states of the air compressor are shown in the figure. The mass flow rate of air is 0.02 kg/s. The compressor loses heat at 3.5 kW. By making an energy balance of the system, the computed value of Win in kW is

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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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

The properties at the inlet and the exit states of the air compressor are shown in
the figure. The mass flow rate of air is 0.02 kg/s. The compressor loses heat at 3.5
kW. By making an energy balance of the system, the computed value of Win in kW
is
O- 3.5 kw
P2=700 kPa
T2-500 K
hz-503.02 ki/kg
Air
i = 0.02 kg/s
P1=90 kPa
T1=290 K
h1-290.16 kl/kg

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