1. The working substance for a Carnot cycle is 8 lb of air.The volume at the beginning of isothermal expansion is 9 cu ftand the pressure is 300 psia. The ratio of expansion during theaddition of heat is 2 and the temperature of the cold body is90°F. Find (a) Q, (b) Qg, (c) Va, (d) p, (e) V,, (f) p,, (g) p, (h) theratio of expansion during the isentropic process, and (i) theoverall 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

'Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

1. The working substance for a Carnot cycle is 8 lb of air. e volume at the beginning of isothermal expansion is 9 cu ft. a the pressure is 300 psia. The ratio of expansion during the- Rition of heat is 2 and the temperature of the cold body is F.Find (a) Q,, (b) Q, (c) V, (d)p3, (e) V,, (f) P,, (g)Pm (h) the io of expansion during the isentropic process, and (i) the 11 f compression

1. The working substance for a Carnot cycle is 8 lb of air. e volume at the beginning of isothermal expansion is 9 cu ft. a the pressure is 300 psia. The ratio of expansion during the- Rition of heat is 2 and the temperature of the cold body is F.Find (a) Q,, (b) Q, (c) V, (d)p3, (e) V,, (f) P,, (g)Pm (h) the io of expansion during the isentropic process, and (i) the 11 f compression

Elements Of Electromagnetics

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Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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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

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) Qg, (c) Va, (d) p, (e) V,, (f) p,, (g) p, (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

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