Fundamentals of Engineering Thermodynamics
8th Edition
ISBN: 9781118412930
Author: Michael J. Moran, Howard N. Shapiro, Daisie D. Boettner, Margaret B. Bailey
Publisher: WILEY
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Chapter 7.7, Problem 7E
To determine
Whether the exergy destruction is occur or not after change the oil of vehicle.
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20.
[Ans. 9; 71.8 mm]
A semi-elliptical laminated spring is made of 50 mm wide and 3 mm thick plates. The length between
the supports is 650 mm and the width of the band is 60 mm. The spring has two full length leaves and
five graduated leaves. If the spring carries a central load of 1600 N, find:
1. Maximum stress in full length and graduated leaves for an initial condition of no stress in the
leaves.
2. The maximum stress if the initial stress is provided to cause equal stress when loaded.
[Ans. 590 MPa ; 390 MPa ; 450 MPa ; 54 mm]
3. The deflection in parts (1) and (2).
Q6/ A helical square section spring is set inside another, the outer spring having a free
length of 35 mm greater than the inner spring. The dimensions of each spring are as
follows:
Mean diameter (mm)
Side of square section (mm)
Active turns
Outer
Inner
Spring
Spring
120
70
8
7
20
15
Determine the (1) Maximum deflection of the two springs and (2) Equivalent spring
rate of the two springs after sufficient load has been applied to deflect the outer
spring 60 mm. Use G = 83 GN/m².
Q2/ The bumper springs of a railway carriage are to be made of rectangular section wire.
The ratio of the longer side of the wire to its shorter side is 1.5, and the ratio of mean
diameter of spring to the longer side of wire is nearly equal to 6. Three such springs
are required to bring to rest a carriage weighing 25 kN moving with a velocity of
75 m/min with a maximum deflection of 200 mm. Determine the sides of the
rectangular section of the wire and the mean diameter of coils when the shorter side is
parallel to the axis of the spring. The allowable shear stress is not to exceed 300 MPa
and G = 84 kN/mm².
Q6/ A belical
Chapter 7 Solutions
Fundamentals of Engineering Thermodynamics
Ch. 7.7 - Prob. 1ECh. 7.7 - Prob. 2ECh. 7.7 - Prob. 3ECh. 7.7 - 4. A pail of water initially at 20°C freezes when...Ch. 7.7 - Prob. 5ECh. 7.7 - Prob. 6ECh. 7.7 - 7. After a vehicle receives an oil change and lube...Ch. 7.7 - Prob. 8ECh. 7.7 - Prob. 9ECh. 7.7 - Prob. 10E
Ch. 7.7 - 11. How does the concept of exergy destruction...Ch. 7.7 - 12. In terms of energy, how does the flight of a...Ch. 7.7 - Prob. 13ECh. 7.7 - Prob. 14ECh. 7.7 - Match the appropriate definition in the right...Ch. 7.7 - 6. Which of the following statements is false when...Ch. 7.7 -
7. Steam contained in a piston–cylinder assembly...Ch. 7.7 - Prob. 8CUCh. 7.7 - Prob. 9CUCh. 7.7 - Prob. 10CUCh. 7.7 - Prob. 11CUCh. 7.7 - Prob. 12CUCh. 7.7 - Prob. 13CUCh. 7.7 - Prob. 14CUCh. 7.7 -
15. Which of the following statements does not...Ch. 7.7 - Prob. 16CUCh. 7.7 - Prob. 17CUCh. 7.7 - Prob. 18CUCh. 7.7 - Prob. 19CUCh. 7.7 - Prob. 20CUCh. 7.7 - Prob. 21CUCh. 7.7 - Prob. 22CUCh. 7.7 - Prob. 23CUCh. 7.7 - Prob. 24CUCh. 7.7 - Prob. 25CUCh. 7.7 - Prob. 26CUCh. 7.7 - Prob. 27CUCh. 7.7 - Prob. 28CUCh. 7.7 - Prob. 29CUCh. 7.7 - Prob. 30CUCh. 7.7 - 31. Exergy transfer accompanying heat transfer is...Ch. 7.7 - Prob. 32CUCh. 7.7 -
33. The well-to-wheel efficiency compares...Ch. 7.7 - Prob. 34CUCh. 7.7 - Prob. 35CUCh. 7.7 - Prob. 36CUCh. 7.7 - Prob. 37CUCh. 7.7 - Prob. 38CUCh. 7.7 - Prob. 39CUCh. 7.7 - Prob. 40CUCh. 7.7 - Prob. 41CUCh. 7.7 - Prob. 42CUCh. 7.7 - Prob. 43CUCh. 7.7 - 44. When products of combustion are at a...Ch. 7.7 - Prob. 45CUCh. 7.7 - Prob. 46CUCh. 7.7 - Prob. 47CUCh. 7.7 - 48. Mass, volume, energy, entropy, and exergy are...Ch. 7.7 - 49. Exergy destruction is proportional to entropy...Ch. 7.7 - Prob. 50CUCh. 7.7 - Prob. 1PCh. 7.7 - Prob. 2PCh. 7.7 - Prob. 3PCh. 7.7 - Prob. 4PCh. 7.7 - Prob. 5PCh. 7.7 - Prob. 6PCh. 7.7 - Prob. 7PCh. 7.7 -
7.8 When matter flows across the boundary of a...Ch. 7.7 - Prob. 9PCh. 7.7 - Prob. 10PCh. 7.7 - 7.11 A system consists of 2 kg of water at 100°C...Ch. 7.7 -
7.12 A domestic water heater holds 189 L of water...Ch. 7.7 -
7.13 Determine the specific exergy of argon at...Ch. 7.7 - Prob. 14PCh. 7.7 - 7.15 A balloon filled with helium at 20°C, 1 bar...Ch. 7.7 - Prob. 19PCh. 7.7 - Prob. 20PCh. 7.7 - Prob. 21PCh. 7.7 - Prob. 22PCh. 7.7 - Prob. 23PCh. 7.7 - Prob. 24PCh. 7.7 - Prob. 25PCh. 7.7 - Prob. 26PCh. 7.7 - Prob. 27PCh. 7.7 - Prob. 28PCh. 7.7 - Prob. 29PCh. 7.7 - Prob. 30PCh. 7.7 - Prob. 31PCh. 7.7 - Prob. 32PCh. 7.7 - Prob. 33PCh. 7.7 - Prob. 34PCh. 7.7 - Prob. 35PCh. 7.7 - Prob. 36PCh. 7.7 - Prob. 37PCh. 7.7 - Prob. 38PCh. 7.7 - Prob. 39PCh. 7.7 - Prob. 40PCh. 7.7 - Prob. 41PCh. 7.7 - Prob. 42PCh. 7.7 - Prob. 43PCh. 7.7 - Prob. 44PCh. 7.7 - Prob. 45PCh. 7.7 - Prob. 47PCh. 7.7 - Prob. 48PCh. 7.7 - Prob. 49PCh. 7.7 - Prob. 50PCh. 7.7 - Prob. 51PCh. 7.7 -
7.52 Water at 24°C, 1 bar is drawn from a...Ch. 7.7 - Prob. 53PCh. 7.7 - Prob. 54PCh. 7.7 - Prob. 55PCh. 7.7 - Prob. 58PCh. 7.7 - Prob. 59PCh. 7.7 - Prob. 60PCh. 7.7 - 7.61. Steam enters a turbine operating at steady...Ch. 7.7 - Prob. 63PCh. 7.7 - Prob. 64PCh. 7.7 - Prob. 65PCh. 7.7 -
7.66 Air enters a turbine operating at steady...Ch. 7.7 - Prob. 67PCh. 7.7 - Prob. 69PCh. 7.7 - Prob. 74PCh. 7.7 - Prob. 75PCh. 7.7 - Prob. 76PCh. 7.7 - Prob. 77PCh. 7.7 - Prob. 78PCh. 7.7 - Prob. 79PCh. 7.7 -
7.80 Steady-state operating data are shown in...Ch. 7.7 - Prob. 81PCh. 7.7 - Prob. 82PCh. 7.7 - Prob. 83PCh. 7.7 - Prob. 84PCh. 7.7 - Prob. 85PCh. 7.7 -
7.86 A gas turbine operating at steady state is...Ch. 7.7 - Prob. 87PCh. 7.7 - Prob. 88PCh. 7.7 -
7.89 Figure P7.89 shows a gas turbine power plant...Ch. 7.7 - Prob. 90PCh. 7.7 - Prob. 91PCh. 7.7 - Prob. 92PCh. 7.7 - Prob. 93PCh. 7.7 - Prob. 94PCh. 7.7 - Prob. 95PCh. 7.7 - Prob. 96PCh. 7.7 - Prob. 97PCh. 7.7 - Prob. 98PCh. 7.7 - Prob. 99PCh. 7.7 - Prob. 100PCh. 7.7 - Prob. 101PCh. 7.7 - Prob. 102PCh. 7.7 - Prob. 103PCh. 7.7 - Prob. 104PCh. 7.7 - Prob. 105PCh. 7.7 - Prob. 106PCh. 7.7 - Prob. 107PCh. 7.7 - Prob. 108PCh. 7.7 - 7.109 Air enters the insulated duct shown in Fig....Ch. 7.7 - Prob. 110PCh. 7.7 - Prob. 111PCh. 7.7 - Prob. 112PCh. 7.7 - Prob. 113PCh. 7.7 - Prob. 114PCh. 7.7 - Prob. 115PCh. 7.7 - Prob. 118PCh. 7.7 - Prob. 120PCh. 7.7 - Prob. 121PCh. 7.7 - Prob. 122PCh. 7.7 - Prob. 123PCh. 7.7 - Prob. 124PCh. 7.7 - Prob. 125PCh. 7.7 - Prob. 126PCh. 7.7 - Prob. 127PCh. 7.7 - Prob. 128PCh. 7.7 - Prob. 129PCh. 7.7 - Prob. 130PCh. 7.7 - Prob. 131PCh. 7.7 - 7.132 Figure P7.132 shows a cogeneration system...Ch. 7.7 - Prob. 133PCh. 7.7 - Prob. 134PCh. 7.7 - Prob. 135PCh. 7.7 - Prob. 136PCh. 7.7 - Prob. 137PCh. 7.7 - Prob. 138PCh. 7.7 - Prob. 139PCh. 7.7 - Prob. 140PCh. 7.7 - Prob. 141PCh. 7.7 - Prob. 142P
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