KEY EQUATIONS
Work and Energy Relations
W = VIt
W = PdV
W = = 2n
m./0 = m. m.2
'(
70
m. = Av
'(
8
Second Law Relations
?@
S = > B
?@
A
?@
A
CD8
E
\ = S _S
P = PRS + gL
Incompressible Substance:
u = ua T
U = Ua T
c = c[ = cY
kT
PV = nR
Entropy Relations

MMAE 320 Homework 3
Due on Wednesday, September 11, 2013
l. Textbook problem 2.57:
A gas contained in a piston-cylinder assembly undergoes two processes, A and B, between the some and
states, 1 and 2, where 9,: 1 bar, v, = 1 m3, U,=4oo H and P, = 10 bar,

‘ MMAE 320 Homework 4
/ Due on Wednesday, September 18, 2013
1. Textbook problem 3.40:
Determine the values of the specified properties at each of the following conditions:
a) For Refrigerant 1343 at P=140 lbf/in2 and h=100Btu/lb, determine T in “F and v

MMAE 320 Homework 7
Due on Wednesday, October 23, 2013
1. Textbook problem 5.6:
Answer the following true or false.
3. A process that violates the second law of thermodynamics violates the first law of thermodynamics.
b. When a net amount of work is done

MMAE$320$Homework$5$
Due$on$Friday$October$4,$2013$by$5pm$
$
1. Textbook*problem*3.100:*
A*tank*contains*0.5m3*of*nitrogen*(N2)*at*?71C*and*1356*kPa.*Determine*the*mass*of*nitrogen,*in*kg,*using*
a) The*ideal*gas*model*
b) Data*from*the*compressibility*ch

MMAE 320 Homework 6
Due on Monday, October 14, 2013
1. Steam enters an adiabatic turbine steadin at 10 MPa and 500°C. A liquid-vapor mixture leaves at 10kPa with a
quality of 90%. Neglecting changes in kinetic and potential energies, determine the mass fl

MMAE 320 Homework 8
Due on Wednesday, November 6, 2013
Textbook problem 6.1:
Using the tables for water, determine the specific entropy at the indicated states, in kJ/kg-K. In each case,
draw the state on a sketch of the T~s diagram.
a) P=5.DM Pa, T=400°C

1.
MMAE 320 Homework 9
Due on Wednesday, November 13, 2013
Textbook Problem 6.55:
Two insulated tanks are connected by a valve. One tank initially contains 1.2 lbm of air at 240'F, 30psia, and the
other tank contains 1.5 Ibrn of air at 60"F, 14,7psia. The

MMAE 320 Homework 10
Due on Wednesday, November 20, 2013
1. Textbook problem 8.14:
On the south coast of the island of Hawaii, lava ﬂows continuously into the ocean. It is proposed to anchor a
ﬂoating power plant offshore of the lava flow. The power plant

f" l.
Last Name: First Name: 0
MMAE 320 - Thermodynamics
Fall 2013
EXAM#1
INSTRUCTIONS:
This is closed book and closed notes exam. You are only allowed to use the basic
equation sheet and property tables attached here, a penlpencil, and a simple calculato

Last Name: First Name: g0 iULi'tO Y1
NIMAE 320
Thermodynamics
Spring 2015
EXAM#2
INSTRUCT IONS:
This is closed book and closed notes exam. You are only allowed to use the basic
equation sheet and property tables attached here, a penlpencil, and a calc

MMAE 320 Homework 1
Due on Monday, August 26, 2013
1. Textbook problem 1.5:
Perform the following unit conversions:
a) 122in3 to L
b) 778.17ft-Ibf to kJ
c) 100hp to kW
d) IOOOIb/h to kgIs
e) 29.392lbf/in2 to bar
f) 2500 fta/min to mE/s
g) 75mile/h to km/h

Names: €91th Group Activity 9 — November 13, 2013
ideal Rankine cycle with reheat. It
Low-pressure opera - between t - .c - A "
lurbine m
rate of steam through the cycle is
mama» 12kgls. Steam enters both states of
the turbine at 500°C and exits the

MMAE 320 Homework 2
Due on Wednesday, September 4, 2013
1. Textbook problem 2.10:
An object whose mass is 300 lbm experiences changes in its kinetic and potential energies owing to the
action of a resultant force R. The work done on the object by the resu

Last Name: _ First Name:
Middle Initial:
Problem 1: (50/200 points)
The standard problem solving procedure is not required for Problem 1. If required, you
should support your answers by providing appropriate arguments, equations, tables, or
charts in orde

Last Name: _ First Name:
Middle Initial:
Problem 1: (30/100 points)
Each part of this problem is worth 7.5 points.
The standard problem solving procedure is not required for Problem 1, but you must
support your answers by providing appropriate equations,

Names: Small Group Activity5- October2 2013
A homeowner has devised a humidiﬁer that is shown below. Water is taken from
the faucet and fed to a reservoir that has an electric resistance heater. The
conditions, neglect heat transfer between the rese

Names: $2254 Group Activity 6 - October 9, 2013
Q= 0
An adiablazc, two-stage turbine operates at steady state. Steam enters at state ‘I
with a pressure of 20bar. temperature of 500°C, and mass flow rate of 20kglsec.
Some steam is extracted at state 2 from

Names: Group Activity 4 - September 11, 2013
A village in Puerto Rico needs to be able to deliver water from a nearby lake to
the village. An engineer plans to use a siphon for this purpose so a pump is not
needed. The design calls for the highest p

Names: 60 Emmi“ Group Activity 7 - October 16, 2013
A local electric company is planning to use a nuclear power plant to produce
1MW of power for the surrounding area.
A nuclear reaction will be used to heat water to a saturated vapor at 100kPa.
T

Names: Group Activity 1 - August 21. 2013
Fresh water and sea water ﬂowing in parallel horizontal pipelines are connected
to each other by a double U-tube manometer, as shown in the ﬁgure. Assume all
ﬂuids are incompressible and that air is a standa

Names: Sglwii'm Group Activity 8 - November 6, 2013
An insulated tank is intially divided in half vertically by a frictionless. thermally
conducting piston. On one side of the pistion is 50ft3 of air at 700R, 60psia. 0n
the other side is 50ft3 of air at

Last Name: i? i {D YE First Name: Middle Initial:
MMAE 320
Thermodynamics
Fall 2013
EXAM#2
INSTRUCTIONS:
This is closed book and closed notes exam. You are only allowed to use the basic
equation sheet and property tables attached here, a pen/pencil, and a

Last Name: 3 i) itii ij i) YE First Name: Middle Initial:
MMAE 320
Thermodynamics
Fall 2013
EXAM#2
INSTRUCTIONS:
This is closed book and closed notes exam. You are only allowed to use the basic
equation sheet and property tables attached here, a pen/penci