ME113 Spring 2008 Exam #1
Key to Examination #1 ME113 THERMODYNAMICS
Spring 2008 Section 02
1
ME113 Spring 2008 Exam #1
1. For a system to be in thermodynamic equilibrium, do the temperature and
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GATEWAY QUIZ 3
ME 113 FALL 2016
1. cfw_5 points) If water is heated at constant pressure, how does the entropy change?
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Ea. It increases.
b. It decreases. /
c. It stays the same
CHAPTER 9 SUMMARY
A cycle during which a net amount of work is produced is called a power cycle, and a power cycle during which the
working fluid remains a gas throughout is called a gas power cycle.
Greg White
ME113
Gosselin
Hydropower: The cleaner energy
We need to refine the ways of creating energy to reduce pollution and slow
the effects of climate change. There are several options readily ava
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100 psia and 100F to a pressure of
10 psia. Determine the entropy generation for this process, in
Btu/lbmR.
R-134a
100
A 1.98m 3 rigid tank initially contains air whose density is 1.86 kg/m 3. The tank is
connected to a high-pressure supply line through a valve. The valve is opened, and air is
allowed to enter the tan
Two rigid tanks are connected by a valve. The left tank, with a volume of 1.5 m 3, contains
air at 192C and 445 kPa while the right tank contains 6.0 kg of air at 299C and 217
kPa. Now the valve is op
1a. R4343 enters an adiabatic compressor as a saturated vapor with a pressure of 120
kPa. The volumetric ﬂow rate entering the compressor is 0.3 ins/min. The compressor
isentropic efficiency is 80%. T
Air at 1 atm, 15C and 60% relative humidity is first heated to 20C in a heating section and then
humidified by introducing water vapor. The air leaves the humidifying section at 25C and 65% relative
h
Juan Serrano
ME 113
Thermodynamics
CAF Essay
The United States and The Paris Climate Agreement
In the past several months, many reports on the news have been talking about climate
change. This is an i
Juan Serrano
Thermodynamics
Professor Zaidi
Reversible and Irreversible Processes
Thermodynamics is a branch of physical science that deals with heat and other forms of
energy. It also details the rel
Semen 1 — Short :enceet queatrene
of steam- The initial temperature and pressure are IIIII'E
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From Tau Beta Pi SJSU Exam Library: http:/exams.tbpsjsu.org
From Tau Beta Pi SJSU Exam Library: http:/exams.tbpsjsu.org
From Tau Beta Pi SJSU Exam Library: http:/exams.tbpsjsu.org
From Tau Beta Pi SJS
ME 113 Exam 2 Section 1
Fall 2010
Name
instructions:
I. Show all Work clearly! Put equations in symboiic form before adding numbers. List assumptions. YOU
WILL NOT RECEIVE FULL CREDET IF YOU DO NOT SH
Instructions:
Work through as many of these problems as you can during the class period. You may work alone or in groups
of two or three. Start with the cycle about which you feel the least conﬁdent.
Entropy
ME 113
Clausius Inequality
Were going to show that the Clausius Inequality
follows from the 2nd Law
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The little circle indicates that were integrating
around a cycle.
Reversible Cycles
Q
A mixture consisting of 0.18 kmol of methane (CH4) and 0.274 kmol of butane (241410) occupies a
vokume of 0.241 m3 at a temperature of 238°C. The experimental value for the pressure is
68.9 bar. Caicu
ME 113 In-Class 1st Law Assignment
Due at the end of class
This assignment should be done in groups of two or no more than three. Only one paper needs to be turned in per
team.
Write down the two stea
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Second Law of Thermodynamics
ME 113
San Jose State University
Prof. Gosselin
Mechanical Engineering Department
ME 113
Are these things possible?
A hot coffee cup in a cool room removes heat
from its
3
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temperature of 400F 7KHSLVWRQF\OLQGHUGHYLFHLVQRZFRROHGXQWLOLWVWHPSHUDWXUHLV
90F . Determine the final pressure of the water and the v