MAE 204 Spring 2015 Additional Problem Set #7
These will not be collected.
Problem 1
An air-standard cycle is executed within a closed piston-cylinder system and consists of three processes as
follows:
1. Isentropic compression with a compression ratio of
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Problem 1
An air-standard cycle executed in a piston-cylinder system is composed of three specified processes.
The cycle is to be sketcehed on the P-v and T-s diagrams and the back work ratio are to be determined.
Assumptions 1 The air-standard assumption
MAE 204 Spring 2015 Additional Problem Set #8
These will not be collected.
Problem 1
Consider a simple Brayton cycle using air as the working uid. It has a pressure ratio of 12 and a maximum
cycle temperature of 600 C. The compressor inlet is at 90 kPa an
Problem 1
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.
Assumptions 1 Steady operating co
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MAE 204 Spring 2015 HW #1
NAME:
SCORE:
/60
Directions:
1. Print this document one-sided. Write solutions on this document.
2. Include you name.
3. Be sure to write legibly and show all work.
4. Scan and upload your answers to UBlearns or give to the instr
MAE 204 Spring 2015 HW #2
Due at 12pm on Friday, February 27th.
NAME:
SCORE:
/60
Directions:
1. Print this document one-sided. Write solutions on this document.
2. Include you name.
3. Be sure to write legibly and show all work.
4. Scan and upload your an
MAE 204 Spring 2015 HW #3
Due at 12pm on Friday, March 13th.
NAME:
SCORE:
/60
Directions:
1. Print this document one-sided. Write solutions on this document.
2. Include you name.
3. Be sure to write legibly and show all work.
4. Scan and upload your answe
MAE 204 Spring 2015 HW #2
Due at 12pm on Friday, February 27th.
NAME:
SCORE:
/60
Directions:
1. Print this document one-sided. Write solutions on this document.
2. Include you name.
3. Be sure to write legibly and show all work.
4. Scan and upload your an
3. Besumtowricelegiuy
4. Scan and upload you" n
date.
Problem I (9 pcs)
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MAE 204 Spring 2015 HW #5
Due at 12pm on Friday, April 10st .
NAME:
SCORE:
/40
Directions:
1. Print this document one-sided. Write solutions on this document.
2. Include you name.
3. Be sure to write legibly and show all work.
4. Scan and upload your answ
MAE 204 Spring 2015 HW #4
Due at 12pm on Friday, April 3rd.
NAME:
SCORE:
/54
Directions:
1. Print this document one-sided. Write solutions on this document.
2. Include you name.
3. Be sure to write legibly and show all work.
4. Scan and upload your answer
MAE 204 Spring 2015 HW #1
NAME:
SCORE:
/60
Directions:
1. Print this document one-sided. Write solutions on this document.
2. Include you name.
3. Be sure to write legibly and show all work.
4. Scan and upload your answers to UBlearns or give to the instr
MAE 204 Spring 2015 HW #6
Due at 4pm on Friday, April 17st .
NAME:
SCORE:
/20
Directions:
1. Print this document one-sided. Write solutions on this document.
2. Include you name.
3. Be sure to write legibly and show all work.
4. Scan and upload your answe
Problem 1
Steam is expanded in an adiabatic turbine with an isentropic efficiency of 0.92. The power output of the
turbine is to be determined.
Assumptions 1 This is a steady-flow process since there is no change with time. 2 Kinetic and potential
energy
Problem 1 Water is compressed in a closed system during which the entropy remains constant. The
final temperature and the work required are to be determined.
Analysis The initial state is superheated vapor and thus
P1 70 kPa
T1 100C
u1 2509.4 kJ/kg
s1 7
MAE 204 Spring 2015 Additional Problem Set #6
These will not be collected.
Problem 1
Steam at 3 MPa and 400 C is expanded to 30 kPa in an adiabatic turbine with an isentropic efciency of 92
percent. Determine the power produced by this turbine, in kW, whe
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MAE 204 Fall 2015 HW #3
Due In Recitation Section On 9/25/15
NAME:
SEC:
SCORE:
/25
Directions:
1. Print this document one-sided. Write solutions on this document.
2. Include you name and the section (A-F).
3. Write all solutions on this document.
4. Be su
MAE 204 Fall 2015 HW #10
Due by 3:30pm outside Jarvis 326 on 11/13/15
NAME:
SEC:
SCORE:
/30
Directions:
1. Print this document one-sided. Write solutions on this document.
2. Include you name and the section (A-F).
3. Write all solutions on this document.
MAE 204 Additional Problem Set #2
These will not be collected.
Problem 1
Nitrogen (N2 ) gas within a piston-cylinder assembly undergoes a compression from p1 = 0.2 MPa and
V1 = 2.75 V3 to a state where p2 = 2 MPa. The relationship between pressure and vol
Thermodynamic Formulas
Temperature
T (K) = T ( C) + 273.15
T (K) =
T ( C)
T (R) = T ( F ) + 459.67
T (R) =
T( F)
T ( C) =
5
9
(T ( F )
32)
Pressure
Pgage = Pabs
P = P2
Pvacuum
Pvac = Patm
P1 = g z
dP
=
dz
Pabs
P = Patm + gh
g
Pgage = gh
Heat Transfer
Q co