Answered: A polytripic process of air from 150…

A polytripic process of air from 150 psia, 300 deg F, and 1 ft occurs to P2 = 20 psia. The process has a polytropic index of 1.3. Prove that: a. tz = 17.4 deg F and 4.711 cu. ft;

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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Thermodynamic Relations

Thermodynamics is the division of physics that deals with the transfer of any kind of energy, whether it be heat, temperature, or work, from one object to another.

Question

for c and d Prove that the given answers are right or prove that the answers are wrong.

7. A polytripic process of air from 150 psia, 300 deg F, and 1 ft occurs to P2 = 20 psia. The
process has a polytropic index of 1.3. Prove that:
a. t2 = 17.4 deg F and 4.711 cu. ft;
b. - dU = 25.81 BTU, - dH = 36.14 BTU, and dS = 0.0141 BTU/R;
c. S pdV = 34.41 BTU and -f pdv = 44. 73 BTU ; and
d. W, = 44.73 BTU for dKE = 0.
%3!
%3D

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