0.5 kg of an ideal gas undergoes an isentropic process from 657 kPa gage and a volume of 0.017 cubic meter to a final volume of 0.1 cubic meter. If Cv = 0.384 kJ/kg-K and Cp = 0.52 kJ/kg-K, calculate: (ANSWER MUST BE EXACT TO CHOICES ONLY) a) the final temperature in deg. C CHOICE -171 102 171 b) the final pressure in kPa CHOICES 68.94 73.84 63.84 c) the change in enthalpy in kJ CHOICES -25 -23 23 d) the work nonflow in kJ CHOCIES 13.87 18.97 16.97

0.5 kg of an ideal gas undergoes an isentropic process from 657 kPa gage and a volume of 0.017 cubic meter to a final volume of 0.1 cubic meter. If Cv = 0.384 kJ/kg-K and Cp = 0.52 kJ/kg-K, calculate: (ANSWER MUST BE EXACT TO CHOICES ONLY) a) the final temperature in deg. C CHOICE -171 102 171 b) the final pressure in kPa CHOICES 68.94 73.84 63.84 c) the change in enthalpy in kJ CHOICES -25 -23 23 d) the work nonflow in kJ CHOCIES 13.87 18.97 16.97

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

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 29RQ: If 3000 ft3 of air is crossing an evaporator coil and iscooled from 75F to 55F, what would be the...

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Concept explainers

Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.

Question

(ANSWER MUST BE EXACT TO CHOICES ONLY)

a) the final temperature in deg. C

CHOICE

-171

102

171

b) the final pressure in kPa

CHOICES

68.94

73.84

63.84

c) the change in enthalpy in kJ

CHOICES

-25

-23

d) the work nonflow in kJ

CHOCIES

13.87

18.97

16.97

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