An air-standard Diesel cycle absorbs 1550 J-mol-1 of heat (step DA of the figure given below, which simulates combustion). The pressure and temperature at the beginning of the compression step are 1 bar and 20°C, and the pressure at the end of the compression step is 4 bar. Assuming air to be an ideal gas for which Cp= (7/2)R and Cy= (5/2)R, what are the compression ratio and the expansion ratio of the cycle? Pressure D A Volume B C The values of Rare given in the following table: Values of the Universal Gas Constant R = 8.314 J-mol-¹K-¹ = 8.314 m³-Pa-mol-¹.K-¹
An air-standard Diesel cycle absorbs 1550 J-mol-1 of heat (step DA of the figure given below, which simulates combustion). The pressure and temperature at the beginning of the compression step are 1 bar and 20°C, and the pressure at the end of the compression step is 4 bar. Assuming air to be an ideal gas for which Cp= (7/2)R and Cy= (5/2)R, what are the compression ratio and the expansion ratio of the cycle? Pressure D A Volume B C The values of Rare given in the following table: Values of the Universal Gas Constant R = 8.314 J-mol-¹K-¹ = 8.314 m³-Pa-mol-¹.K-¹
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:An air-standard Diesel cycle absorbs 1550 J.mol-¹ of heat (step DA of the figure given below, which simulates combustion). The
pressure and temperature at the beginning of the compression step are 1 bar and 20°C, and the pressure at the end of the
compression step is 4 bar. Assuming air to be an ideal gas for which Cp= (7/2)R and Cy= (5/2)R, what are the compression ratio and
the expansion ratio of the cycle?
Pressure
D
A
Volume
B
C
The values of R are given in the following table:
Values of the Universal Gas Constant
R 8.314 J-mol-¹.K-18.314 m³ Pa-mol-¹.K-1
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