ME 24221 Thermodynamics Fall 2014
Recitation Exercises, Nov. 12, 2014
1. An airstandard Otto cycle has a compression ratio of 9. At the beginning of compression,
P1 = 100 kPa and T1 = 300 K. Compression and expansion processes can be assumed as
isentropi
Name: Recitation Section:
Exam 2 (Total points: 100)
Thermodynamics 1 (24221), Fall 2014
Date: Friday, Oct 20, 12:30 1:15 PM
Open book and open notes
Problem 1 {40 points): Clearly circle only one answer. Circling more than one will get 0.
i) 1 kg of an

" a Mass, Energy, and Entropy Balance for
Closed and Open Systems
Types of Thermodynamic Systems
th the surroundings.
Open system: A system that can exchange both energy and mass wi
rroundings. Fixed mass
Closed system: A system that can only exchange e
PRACTIC'EThernui
Problem 5: Energy analysis of control volume at steady state.
Solution:
Given parameters:
Dizuneter of inside pipe (Di) : 5 in = 0.127 m
Dimneter of inside pipe (D,) = 6 in = 0.1524 111
Number of pipes (NWES) : 1400
Mass flow rate of Heli
Homework Assignment 7
Thermodynamics l (24221). Fall 2014
Due date: Friday. Oct 31
Total point: 100
Drop hard copy in box outside the class. Box will be picked up at 12:40 PM.
Textbook Sections direcMelevant to this HW: 4.7. 6.5. 6.7.4. 6.9. 6.10.
Textboo
Homework Assignment  8
Thermodynamics 1 (24221), Fall 2014
Due date: Friday, Nov 14
Total point: 100
Drop hard copy in box outside the class. Box will be picked up at 12:40 PM.
Textbook Sections directly_relevant to this HW: 5.4, 5.6, 5.9, 5.10, 6.11, 6.
Homework Assignment  10
Thermodynamics  1 (24221), Fall 2014
Due date: Friday, Dec 5
Total points: 100
Dr0p hard copy in box outside the class. Box will be picked up at 12:40 PM.
Textbook Sections directly relevant to this HW: 5.7, 6.5, 6.7, 6.12, 8.1,