Skip to Main Content
Advanced Thermodynamics for Engineers, 2nd Edition
book

Advanced Thermodynamics for Engineers, 2nd Edition

by Ali Turan, D. Winterbone
February 2015
Intermediate to advanced content levelIntermediate to advanced
578 pages
19h 27m
English
Butterworth-Heinemann
Content preview from Advanced Thermodynamics for Engineers, 2nd Edition
3.3 GENERAL COMMENTS ON EFFICIENCIES
The efficiency of the Carnot cycle is directly related to the temperature ratio of the hot and cold
reservoirs. Examination of the other efficiencies will show that they are also related to temperature
ratios of the cycle. The efficiency of the Otto cycle is (Eqn (3.17))
h
Otto
¼ 1
1
r
ðk1Þ
¼ 1
T
1
T
2
¼ 1
T
4
T
3
:
The equation for the diesel engine is more complex and will not be considered here. However, the
efficiency of the Joule cycle can also be related to the temperature ratio because r
k1
k
p
¼
T
2
T
1
, and hence
h
Joule
¼ 1
1
r
k1
k
p
¼ 1
T
1
T
2
¼ 1
T
4
T
3
; in Fig. 3.17.
Hence, all heat engines have efficiencies of the form
h
th
¼ 1
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Mechanical Engineering Systems

Mechanical Engineering Systems

Richard Gentle, Peter Edwards, William Bolton
Thermodynamics

Thermodynamics

S. C. Gupta
Convective Heat Transfer, Third Edition, 3rd Edition

Convective Heat Transfer, Third Edition, 3rd Edition

Sadik Kakac, Yaman Yener, Anchasa Pramuanjaroenkij

Publisher Resources

ISBN: 9780444633736