Q2. A 2 lb of steam, initially at 700 lbf/in.², 550°F undergoes a polytropic process in a piston- cylinder assembly to a final pressure of 2200 lbf/in. Kinetic and potential energy effects are negligible. A. show the process on a p-v diagram B. using data from the steam tables, determine the work and heat transfer, in Btu, for a polytropic exponent of X2. X2 = 1.5 C. is assuming ideal gas behavior suitable for the given thermodynamic process? Why?

Q2. A 2 lb of steam, initially at 700 lbf/in.², 550°F undergoes a polytropic process in a piston- cylinder assembly to a final pressure of 2200 lbf/in. Kinetic and potential energy effects are negligible. A. show the process on a p-v diagram B. using data from the steam tables, determine the work and heat transfer, in Btu, for a polytropic exponent of X2. X2 = 1.5 C. is assuming ideal gas behavior suitable for the given thermodynamic process? Why?

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.

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Q2. A 2 lb of steam, initially at 700 lbf/in.2, 550°F undergoes a polytropic process in a piston-
cylinder assembly to a final pressure of 2200 lbf/in. Kinetic and potential energy effects are
negligible.
A. show the process on a p-v diagram
B. using data from the steam tables, determine the work and heat transfer, in Btu, for a polytropic
exponent of X2. X2 = 1.5
C. is assuming ideal gas behavior suitable for the given thermodynamic process? Why?

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Step 1: Given:

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Step 2: Evaluate each state using the steam tables:

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Step 3: The P-V diagram:

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Step 4: The work and heat transfer:

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Step 5: The condition of ideal gas:

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