2. Helium expands polytropically in a piston-cylinder from an initial pressure and volume of 3800 kPa and 0.75 m?, respectively. If the final pressure is 3680 kPa less than the initial pressure; n=1.3; R=2.077 kJ/kg-K; and k=1.66, determine: a. the non-flow work (kJ); and b. the change in specific entropy (kJ/kg-K).

2. Helium expands polytropically in a piston-cylinder from an initial pressure and volume of 3800 kPa and 0.75 m?, respectively. If the final pressure is 3680 kPa less than the initial pressure; n=1.3; R=2.077 kJ/kg-K; and k=1.66, determine: a. the non-flow work (kJ); and b. the change in specific entropy (kJ/kg-K).

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

First law of Thermodynamics

The word thermodynamics consists of two words: thermo- and dynamics. Dynamics means the study of motion. The field of thermodynamics is all about the study of the movement of heat. In a more meaningful way, it is stated as the study of the transfer of energy. Energy transfer is something that we encounter in day-to-day life. Automobiles, chemical reactions, refrigerators, and power generators work on the basis of thermodynamic principles.

Question

2. Helium expands polytropically in a
piston-cylinder from an initial
pressure and volume of 3800 kPa
and 0.75 m, respectively. If the final
pressure is 3680 kPa less than the
initial pressure; n=1.3; R=2.077
kJ/kg-K; and k=1.66, determine:
a. the non-flow work (kJ); and
b. the change in specific
entropy (kJ/kg-K).

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