1 kg of an ideal gas undergoes an isentropic process from 780 kPa gage and a volume of 0.017 cubic meter to a final volume of 0.1 cubic meter. If Cv = 0.38 kJ/kg-K and Cp = 0.52 kJ/kg-K, determine: (ANSWER MUST BE EXACT TO CHOICES) a) the final temperature in degrees Celsius CHOICES -233 -217 -171

1 kg of an ideal gas undergoes an isentropic process from 780 kPa gage and a volume of 0.017 cubic meter to a final volume of 0.1 cubic meter. If Cv = 0.38 kJ/kg-K and Cp = 0.52 kJ/kg-K, determine: (ANSWER MUST BE EXACT TO CHOICES) a) the final temperature in degrees Celsius CHOICES -233 -217 -171

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter1: Heat, Temperature, And Pressure

Section: Chapter Questions

Problem 6RQ: One British thermal unit will raise the temperature of _____ 1b of water _____F.

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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 kg of an ideal gas undergoes an isentropic process from 780 kPa gage and a volume of 0.017 cubic meter to a final volume of 0.1 cubic meter. If Cv = 0.38 kJ/kg-K and Cp = 0.52 kJ/kg-K, determine:

(ANSWER MUST BE EXACT TO CHOICES)

a) the final temperature in degrees Celsius

CHOICES

-233

-217

-171

b) the final pressure in kPa

CHOICES

78.05

69.36

68.84

c) the change in enthalpy in kJ

CHOICES

-22.96

-24.56

-26.65

d) the work non flow in kJ

CHOICES

19.52

16.97

17.13

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