ME336 Thermodynamics II
QUIZ 1: October 10 2014
Prof. A. Violi
1. A heat engine receives heat from a source at 1200 K and rejects
the waste heat to a sink at 400 K. If the thermal efficiency of the
engine is 0.40, the second-law efficiency of this heat en
In the Classroom
Introduction of Entropy via the Boltzmann Distribution
in Undergraduate Physical Chemistry: A Molecular Approach
Evguenii I. Kozliak
Department of Chemistry, University of North Dakota, Grand Forks, ND 58202-9024; [email protected]
En
ME 336 Homework #4 Solutions
Q1:
A simple Brayton cycle with air as the working fluid operates between the specified temperature and pressure
limits. The effects of non-isentropic compressor and turbine on the back-work ratio is to be compared.
Q2:
A dual
Q1 A 280-MW combined gas-steam power plant is considered. The topping cycle is a gas-turbine cycle and the
bottoming cycle is a nonideal Rankine cycle with an open feedwater heater. The mass flow rate of air to steam, the
required rate of heat input in th
ME 336 HW 2 Solutions
Point Breakdown:
0: No attempt
1: Wrong equation, assumption, value from table, and/or units
2: Algebra mistake
3: Correct equations and answer
Q1: When does the Maxwell distribution of speeds peak at lower and higher speeds?
The dis
ME336 F14
HW 1 Solutions
Point Breakdown:
0: No attempt
1: Wrong equation, assumption, value from table, and/or units
2: Algebra mistake
3: Correct equations and answer
Q1:
An insulated rigid tank is initially filled with a saturated liquid-vapor mixture
PRINT NAMES: _ AND _
ME 336
Fall 2014
Prof. Angela Violi
Homework #9
Due December 12, 2014 no later than 3:30PM in Room EECS 1200
(This is the room of your final exam)
For this HW you can work in pairs.
If we canno
PRINT NAME: _
ME 336
Fall 2014
Prof. Angela Violi
Homework #8
Due in class December 10, 2014 no later than 1:30PM
If we cannot read your solutions or follow your logic, then the problem will be marked as
being incorrect.
HONOR CODE
I have neither given no
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Honor Code Pledge
(Please Sign):
Thermodynamics II
ME336
Prof. Angela Violi
Homework #7
Due in class Friday, November 14 no later than 1:30PM
If the grader cannot read your solutions or follow your logic, it will be marked as being
incorrect.
Print Name:
Honor Code Pledge
(Please Sign):
Thermodynamics II
ME336
Prof. Angela Violi
Homework #3
Due in class Friday, October 3 no later than 1:30PM
If the grader cannot read your solutions or follow your logic, it will be marked as being
incorrect.
Pl
Print Name:
Honor Code Pledge
(Please Sign):
Thermodynamics II
ME336
Prof. Angela Violi
Homework #5
Due in class Friday, October 31 no later than 1:30PM
If the grader cannot read your solutions or follow your logic, it will be marked as being
incorrect
Q1
Print Name:
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(Please Sign):
Thermodynamics II
ME336
Prof. Angela Violi
Homework #2
Due in class Friday, September 26 no later than 1:30PM
If the grader cannot read your solutions or follow your logic, it will be marked as being
incorrect
Print Name:
Honor Code Pledge
(Please Sign):
Thermodynamics II
ME336
Prof. Angela Violi
Homework #6
Due in class Friday, November 7 no later than 1:30PM
If the grader cannot read your solutions or follow your logic, it will be marked as being
incorrect
Q1
Print Name:
Honor Code Pledge
(Please Sign):
Thermodynamics II
ME336
Prof. Angela Violi
Homework #1
Due in class Friday, October 10 no later than 1:30PM
If the grader cannot read your solutions or follow your logic, it will be marked as being
incorrect
Q1
Print Name:
Honor Code Pledge
(Please Sign):
Thermodynamics II
ME336
Prof. Angela Violi
Homework #1
Due in class Friday, September 19 no later than 1:30PM
If the grader cannot read your solutions or follow your logic, it will be marked as being
incorrect
1. (80 points)
A gas turbine power plant operates under the Brayton cycle, which is non-ideal due to heat losses
from the compressor and turbine. The cycle uses air as the working fluid, has a pressure ratio of
12:1 and a mass flow rate of 100 kg/s. The c
REVIEW PROBLEMS
IN PREPARATION FOR THE FINAL EXAM SCHEDULED FOR DECEMBER 12 2014
1. A refrigeration unit operates on the ideal vapor compression refrigeration cycle and uses refrigerant-22
as the working fluid. The operating conditions for this unit are e
ME 336 F14 Exam 2 Review Questions
Answers will be uploaded Wednesday, November 19
Q1:
Air enters a 30-cm diameter cooling section at 1 atm, 35C, and 45% relative humidity at
18m/s. Heat is removed form the air at a rate of 950 kJ/min. Determine:
a) exit