1. The working substance for a Carnot cycle is 8 lb of air. The volume at the beginning of isothermal expansion is 9 cu ft and the pressure is 300 psia. The ratio of expansion during the addition of heat is 2 and the temperature of the cold body is 90°F. Find (a) Q, (b) Q, (c) V3, (d) P3, (e)V, (f) P,, (g) Pm, (h) the ratio of expansion during the isentropic process, and (i) the overall ratio of compression.

1. The working substance for a Carnot cycle is 8 lb of air. The volume at the beginning of isothermal expansion is 9 cu ft and the pressure is 300 psia. The ratio of expansion during the addition of heat is 2 and the temperature of the cold body is 90°F. Find (a) Q, (b) Q, (c) V3, (d) P3, (e)V, (f) P,, (g) Pm, (h) the ratio of expansion during the isentropic process, and (i) the overall ratio of compression.

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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Question

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Give solution to the thermodynamics problem.

1. The working substance for a Carnot cycle is 8 lb of air.
The volume at the beginning of isothermal expansion is 9 cu ft
and the pressure is 300 psia. The ratio of expansion during the
addition of heat is 2 and the temperature of the cold body is
90°F. Find (a) Qu, (b) Qr, (c) V3, (d) p,, (e) V,, (f) p,, (g)pm» (h) the
ratio of expansion during the isentropic process, and (i) the
overall ratio of compression.
Ans. (a) 346.4 Btu; (b) -209.1 Btu; (c) 63.57 cu ft; (d)
25.64 psia; (e) 31.79 cu ft; (f) 51.28 psia; (g) 13.59 psia; (h) 3.53;
(8) 7.06

Science that deals with the amount of energy transferred from one equilibrium state to another equilibrium state.

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