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Engineering and Tech / Fundamentals of Engineering Thermodynamics 7 / Chapter 6 / Problem 85P

Fundamentals of Engineering Thermodynamics | 7th Edition | ISBN: 9780470495902 | Authors: Michael J. Moran, Howard N. Shapiro, Daisie D. Boettner, Margaret B. Bailey

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Applying the Entropy Balance: Control VolumesPropane at

Chapter 6, Problem 85P

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QUESTION:

Propane at 0.1 MPa, \(20^{\circ} \mathrm{C}\) enters an insulated compressor operating at steady state and exits at 0.4 MPa, \(90^{\circ} \mathrm{C}\) Neglecting kinetic and potential energy effects, determine

(a) the power required by the compressor, in kJ per kg of propane flowing.

(b) the rate of entropy production within the compressor, in kJ/K per kg of propane flowing.

Questions & Answers

QUESTION:

Propane at 0.1 MPa, \(20^{\circ} \mathrm{C}\) enters an insulated compressor operating at steady state and exits at 0.4 MPa, \(90^{\circ} \mathrm{C}\) Neglecting kinetic and potential energy effects, determine

(a) the power required by the compressor, in kJ per kg of propane flowing.

(b) the rate of entropy production within the compressor, in kJ/K per kg of propane flowing.

ANSWER:

Solution

Step 1 of 3

In this problem, we have to find the power required by the compressor and the rate of entropy production within the compressor. The given data are

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