FUNDAMENTALS OF ENGINEERING THERMODYNAM
8th Edition
ISBN: 2818440116926
Author: MORAN
Publisher: WILEY CONS
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Chapter 10.7, Problem 20CU
To determine
The reason behind the coefficient of performance of an ideal vapor compression refrigeration cycle less than the coefficient of performance of a Carnot refrigeration cycle operates between the same warm and cold region temperature.
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Problem4.
The thin uniform disk of mass m = 1-kg and radius R = 0.1m spins about the bent shaft OG with
the angular speed w2 = 20 rad/s. At the same time, the shaft rotates about the z-axis with the angular
speed 001 = 10 rad/s. The angle between the bent portion of the shaft and the z-axis is ẞ = 35°. The
mass of the shaft is negligible compared to the mass of the disk.
a. Find the angular momentum of the disk with respect to point G, based on the axis
orientation as shown. Include an MVD in your solution.
b. Find the angular momentum of the disk with respect to point O, based on the axis
orientation as shown. (Note: O is NOT the center of fixed-point rotation.)
c. Find the kinetic energy of the assembly.
z
R
R
002
2R
x
Answer: H = -0.046ĵ-0.040 kg-m²/sec
Ho=-0.146-0.015 kg-m²/sec
T 0.518 N-m
=
Problem 3.
The assembly shown consists of a solid sphere of mass m and the uniform slender rod of the same
mass, both of which are welded to the shaft. The assembly is rotating with angular velocity w at a
particular moment. Find the angular momentum with respect to point O, in terms of the axes
shown.
Answer: Ñ。 = ½mc²wcosßsinßĵ + (}{mr²w + 2mb²w + ½ mc²wcos²ß) k
3
m
r
b
2
C
لا
m
Only question 2
Chapter 10 Solutions
FUNDAMENTALS OF ENGINEERING THERMODYNAM
Ch. 10.7 - Prob. 1ECh. 10.7 - Prob. 2ECh. 10.7 - Prob. 3ECh. 10.7 - Prob. 4ECh. 10.7 - Prob. 5ECh. 10.7 - Prob. 6ECh. 10.7 - Prob. 7ECh. 10.7 - Prob. 8ECh. 10.7 - Prob. 9ECh. 10.7 - Prob. 10E
Ch. 10.7 - Prob. 11ECh. 10.7 - Prob. 12ECh. 10.7 - Prob. 13ECh. 10.7 - Prob. 14ECh. 10.7 - Prob. 1CUCh. 10.7 - Prob. 11CUCh. 10.7 - Prob. 12CUCh. 10.7 - 13. Why is wet compression avoided within...Ch. 10.7 - Prob. 14CUCh. 10.7 - Prob. 15CUCh. 10.7 - Prob. 16CUCh. 10.7 - Prob. 17CUCh. 10.7 - Prob. 18CUCh. 10.7 - Prob. 19CUCh. 10.7 - Prob. 20CUCh. 10.7 - Prob. 21CUCh. 10.7 - Prob. 22CUCh. 10.7 - Prob. 23CUCh. 10.7 - Prob. 24CUCh. 10.7 - Prob. 25CUCh. 10.7 - Prob. 26CUCh. 10.7 - Prob. 27CUCh. 10.7 - Prob. 28CUCh. 10.7 - Prob. 29CUCh. 10.7 - Prob. 30CUCh. 10.7 - Prob. 31CUCh. 10.7 - Prob. 32CUCh. 10.7 - 33. The desuperheating section of the refrigerant...Ch. 10.7 - 34. A throttling process is usually modeled as an...Ch. 10.7 - Prob. 35CUCh. 10.7 - Prob. 36CUCh. 10.7 - Prob. 37CUCh. 10.7 - Prob. 38CUCh. 10.7 - Prob. 39CUCh. 10.7 - Prob. 40CUCh. 10.7 - Prob. 41CUCh. 10.7 - Prob. 42CUCh. 10.7 - Prob. 43CUCh. 10.7 - Prob. 44CUCh. 10.7 - Prob. 45CUCh. 10.7 - Prob. 46CUCh. 10.7 - Prob. 47CUCh. 10.7 - 48. In a cascade vapor-compression refrigeration...Ch. 10.7 - Prob. 49CUCh. 10.7 - Prob. 50CUCh. 10.7 - Prob. 51CUCh. 10.7 - Prob. 1PCh. 10.7 - Prob. 2PCh. 10.7 - Prob. 3PCh. 10.7 - Prob. 4PCh. 10.7 - 10.5 For the cycle in Problem 10.4, determine
(a)...Ch. 10.7 - Prob. 6PCh. 10.7 - Prob. 7PCh. 10.7 - 10.8 Refrigerant 134a is the working fluid in an...Ch. 10.7 - Prob. 9PCh. 10.7 - Prob. 10PCh. 10.7 - Prob. 11PCh. 10.7 - Prob. 13PCh. 10.7 - 10.15 A vapor-compression refrigeration cycle...Ch. 10.7 - Prob. 16PCh. 10.7 - Prob. 17PCh. 10.7 - Prob. 18PCh. 10.7 - 10.19 If the minimum and maximum allowed...Ch. 10.7 - Prob. 21PCh. 10.7 - Prob. 22PCh. 10.7 - Prob. 23PCh. 10.7 - 10.24 The window-mounted air conditioner shown in...Ch. 10.7 - 10.25 A vapor-compression refrigeration system for...Ch. 10.7 - Prob. 26PCh. 10.7 - Prob. 28PCh. 10.7 - Prob. 29PCh. 10.7 - Prob. 31PCh. 10.7 - 10.32 Figure P10.32 shows the schematic diagram of...Ch. 10.7 - Prob. 33PCh. 10.7 - Vapor-Compression Heat Pump Systems
10.34 Figure...Ch. 10.7 - Prob. 35PCh. 10.7 - Prob. 36PCh. 10.7 - 10.37 An office building requires a heat transfer...Ch. 10.7 - Prob. 38PCh. 10.7 - Prob. 39PCh. 10.7 - Prob. 40PCh. 10.7 - 10.41 Refrigerant 134a enters the compressor of a...Ch. 10.7 - Prob. 42PCh. 10.7 - Prob. 43PCh. 10.7 - Prob. 44PCh. 10.7 - Prob. 46PCh. 10.7 - Prob. 47PCh. 10.7 - 10.48 The table below provides steady-state...Ch. 10.7 - Prob. 50PCh. 10.7 - Prob. 51PCh. 10.7 - Prob. 53PCh. 10.7 - Prob. 54PCh. 10.7 - Prob. 55PCh. 10.7 - Prob. 56P
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