One pound of air per second with an initial temperature of 180°F is allowed to expand without flow (closed system) from a pressure of 120 to 20 psia. Find the work in hp if the process follows pv1.5-constant.

One pound of air per second with an initial temperature of 180°F is allowed to expand without flow (closed system) from a pressure of 120 to 20 psia. Find the work in hp if the process follows pv1.5-constant.

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

One pound of air per second with an initial
temperature of 180°F is allowed to expand without
flow (closed system) from a pressure of 120 to 20 psia.
Find the work in hp if the process follows
py1.5-constant.
O 17.48
O 15.70
O 31.27
O 55.81
O 62.16
O 111.19

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