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HW 5 Due Friday, April 29
1. A 10-ton vapor-compression refrigeration system uses Refrigerant 134a (R-134a) as its
working fluid. The fluid enters the compressor at 15oC, 4 bar, and is compressed to 12
bar. The

HW 4 Due Friday, April 22
1. A gas-turbine power plant operates on a Brayton cycle with air as the working fluid.
The air enters the turbine at 120 psia and 2000oR and leaves at 15 psia and 1200oR.
Heat is

Refrigeration and Heat Pump Systems
Chapter 10
Learning objectives: By the end of this section of the course, you will be able to:
1. Explain to your non-engineering peers how a basic refrigeration or heat pump system
operates;
2. Perform thermodynamics a

By the end of this section of the course, you should be able to:
1.
2.
3.
4.
5.
6.
quantitatively describe ideal gas mixtures in terms of mass fractions and mole fractions;
use the Dalton model to relate pressure, volume and temperature for an ideal gas m

Gas Power Systems
GasPowerSystems
Ch.9
ME303 Fall2008
Learningobjectives Bytheendofthissectionoftheclass,youshouldbeableto:
a.
Describetoahighschoolseniorwhatagaspowersystemis,whatitis
commonlyusedfor,andthemajorcomponentsofsuchasystem.
b.
Analyzethebasic

File:C:\Users\djungqui\Desktop\HW 3 P2.EES
4/17/2016 2:02:42 PM Page 1
EES Ver. 9.925: #0552: for use only by students and faculty, Mechanical Engineering, Dept. Cal Poly State University
p1=120
p2=30
p3=0.08
T1=600
nt=0.9
m_dot=1200/3600
h1=enthalpy(wate

HW 2 Due Wednesday, April 13
1. An ideal Rankine cycle also incorporates reheat. Steam enters the turbine at 40 bars and
440oC, and is expanded to 7 bars, then is reheated to 440oC, and finally expanded to a

File:C:\Users\djungqui\Desktop\HW 3.EES
4/17/2016 12:30:48 PM Page 1
EES Ver. 9.925: #0552: for use only by students and faculty, Mechanical Engineering, Dept. Cal Poly State University
p1=1200
p2=100
p3=0.6
T1=800
nt=.9
np=.95
W_dot_net=34121420
h1=entha

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HW 7 Due Friday, May 20
1. Air flows through a heating system at 1 atm, 12oC and 30% relative humidity at a rate of
6 m3/min, and it leaves at 25oC. Determine (a) the humidity ratio at the inlet, (b) the
rate of heat transfer, in kW, and (c) relative h