Exercise 3 A heat engine exhausts its heat at 340 °C and has a Carnot efficiency of 38 % What exhaust temperature would enable it to achieve a Carnot efficiency of 45 %.
Exercise 3 A heat engine exhausts its heat at 340 °C and has a Carnot efficiency of 38 % What exhaust temperature would enable it to achieve a Carnot efficiency of 45 %.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
Related questions
Question

Transcribed Image Text:7:23 P
Exercise 3
A heat engine exhausts its heat at 340 °C and has a Carnot efficiency of 38
% What exhaust temperature would enable it to achieve a Carnot efficiency
of 45 %.
Exercise 4
A Carnot cycle, shown in Fig. (3) has the following condilions: V, = 7.5 L,
V, = 15 L, TH = 470 °C, and T, = 260 °C. The gas used in the cycle is 0.50
mol of a diatomic gas, y = 1.4. Calculate (a) the pressures at a and b; (b)
The volumes at c and d. (c) What is the work done along process ab? (d)
What is the heat lost along process ed? (d) Calculate the net work done for
the whole cycle. (e) What is the efficiency of the cycle, using the definition
e = W/QH? Show that this is the same as given by e = 1- .
Exercise 5
One mole of monatomic gas undergoes a Carnot cycle with TH = 350 °C and
T = 260 °C. The initial pressure is 8.8 atm. During the isothermal expan-
sion, the volume doubles. (a) Find the values of the pressure and volume
at the points a, b, c and d (see Fig. (3)). (b) Determine Q, W and AEnt
TH
d
Figure 3: Carnot Cycle
For each segment of the cycle. (c) Calculate the efficiency of the cycle using
e = 1- , and e = 1 - .
Exercise 6
The PV diagram shown in Fig. (4)) applies to 2.1 moles of an ideal diatomic
gas. (a) calculate the temperature at all points. (b) calculate the heat
transferred in path AB, BC, CD and DA. (c) Determine the net heat
absorbs by the systems. (d) The net work done by the gas and the change in
internal energy for the complete cycle. Determine the total heat input QH
and the total heat exhausted Q, during the cycle. (e) What is the efficiency
of this cycle?
P(atm)
B
40
10
50
V (L)
Figure 4: Exercice 6
Exercise 7
3
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps

Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Recommended textbooks for you

College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning

University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON

Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press

College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning

University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON

Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press

Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning

Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley

College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON