Solution Manual For Thermodynamics:
An Engineering Approach 10th Edition
by Cengel All 18 Chapters Covered
SOLUTIONS MANUAL
,TABLE OF CONTENTS
1) Introduction and Basic Concepts
2) Energy, Energy Transfer, and General Energy
Analysis
3) Properties of Pure Substances
4) Energy Analysis of Closed Systems
5) Mass and Energy Analysis of Control Volumes
6) The Second Law of Thermodynamics
7) Entropy
8) Entropy Analysis
9) Exergy
10) Gas Power Cycles
11) Vapor and Combined Power Cycles
12) Refrigeration Cycles
13) Thermodynamic Property Relations
14) Gas Mixtures
15) Gas-Vapor Mixtures and Air-Conditioning
16) Chemical Reactions
17) Chemical and Phase Equilibrium
18) Compressible Flow
,Thermodynamics
1-1C Classical thermodynamics is based on experimental observations whereas statistical thermodynamics is
based on the average behavior of large groups of particles.
1-2C On a downhill road the potential energy of the bicyclist is being converted to kinetic energy, and thus the
bicyclist picks up speed. There is no creation of energy, and thus no violation of the conservation of energy
principle.
1-3C A car going uphill without the engine running would increase the energy of the car, and thus it would be a
violation of the first law of thermodynamics. Therefore, this cannot happen. Using a level meter (a device with
an air bubble between two marks of a horizontal water tube) it can shown that the road that looks uphill to the
eye is actually downhill.
1-4C There is no truth to his claim. It violates the second law of thermodynamics.
Mass, Force, and Units
1-5C Kg-mass is the mass unit in the SI system whereas kg-force is a force unit. 1-kg-force is the force required to
accelerate a 1-kg mass by 9.807 m/s2. In other words, the weight of 1-kg mass at sea level is 1 kg-force.
1-6C In this unit, the word light refers to the speed of light. The light-year unit is then the product of a velocity
and time. Hence, this product forms a distance dimension and unit.
1-7C There is no acceleration, thus the net force is zero in both cases.
1-8 The variation of gravitational acceleration above the sea level is given as a function of altitude. The height at
which the weight of a body will decrease by 0.3% is to be determined.
z
Analysis The weight of a body at the elevation z can be expressed as
W mg m(9.807 3.32 10 6 z)
In our case, 8862 m
W (1 0.3 /100)Ws 0.997Ws 0.997mg s
0.997(m)(9.807)
0
Substituting,
6
0.997(9.807) (9.807 3.32 10 z) z
, Sea level
An Engineering Approach 10th Edition
by Cengel All 18 Chapters Covered
SOLUTIONS MANUAL
,TABLE OF CONTENTS
1) Introduction and Basic Concepts
2) Energy, Energy Transfer, and General Energy
Analysis
3) Properties of Pure Substances
4) Energy Analysis of Closed Systems
5) Mass and Energy Analysis of Control Volumes
6) The Second Law of Thermodynamics
7) Entropy
8) Entropy Analysis
9) Exergy
10) Gas Power Cycles
11) Vapor and Combined Power Cycles
12) Refrigeration Cycles
13) Thermodynamic Property Relations
14) Gas Mixtures
15) Gas-Vapor Mixtures and Air-Conditioning
16) Chemical Reactions
17) Chemical and Phase Equilibrium
18) Compressible Flow
,Thermodynamics
1-1C Classical thermodynamics is based on experimental observations whereas statistical thermodynamics is
based on the average behavior of large groups of particles.
1-2C On a downhill road the potential energy of the bicyclist is being converted to kinetic energy, and thus the
bicyclist picks up speed. There is no creation of energy, and thus no violation of the conservation of energy
principle.
1-3C A car going uphill without the engine running would increase the energy of the car, and thus it would be a
violation of the first law of thermodynamics. Therefore, this cannot happen. Using a level meter (a device with
an air bubble between two marks of a horizontal water tube) it can shown that the road that looks uphill to the
eye is actually downhill.
1-4C There is no truth to his claim. It violates the second law of thermodynamics.
Mass, Force, and Units
1-5C Kg-mass is the mass unit in the SI system whereas kg-force is a force unit. 1-kg-force is the force required to
accelerate a 1-kg mass by 9.807 m/s2. In other words, the weight of 1-kg mass at sea level is 1 kg-force.
1-6C In this unit, the word light refers to the speed of light. The light-year unit is then the product of a velocity
and time. Hence, this product forms a distance dimension and unit.
1-7C There is no acceleration, thus the net force is zero in both cases.
1-8 The variation of gravitational acceleration above the sea level is given as a function of altitude. The height at
which the weight of a body will decrease by 0.3% is to be determined.
z
Analysis The weight of a body at the elevation z can be expressed as
W mg m(9.807 3.32 10 6 z)
In our case, 8862 m
W (1 0.3 /100)Ws 0.997Ws 0.997mg s
0.997(m)(9.807)
0
Substituting,
6
0.997(9.807) (9.807 3.32 10 z) z
, Sea level
