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Challenger Center Cooling Tower. Enev/Ench 435 September 23, 2008 Performed By: Dianah Dugan Alex Saputa. Contents. Block Diagram Schematic Equipment Data Collection Results Conclusion. Block Diagram of Cooling Tower. Air Inlet. Air Outlet. CT unit. T h q P H. T P. - PowerPoint PPT Presentation
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Challenger Center Cooling Tower
Enev/Ench 435
September 23, 2008
Performed By:
Dianah Dugan
Alex Saputa
Contents
Block Diagram Schematic Equipment Data Collection Results Conclusion
Block Diagram of Cooling Tower
Air Inlet Air Outlet
ThqPH
TP
CT unit
Cooling Tower Schematic
Outside
Intake
Outside Intake
Inside Intake
Exhaust
Schematic of Exhaust Fan
0.22 ft
0.72 ft
1.22 ft
*Distances measured from center of fan
Equipment
Anemometer Yard Stick Ladder Sling Psychrometer Psychrometric Chart
Radial Dependence of Temperature
98
99
100
101
102
103
104
105
106
107
108
0 0.2 0.4 0.6 0.8 1 1.2 1.4Radial position (ft.)
Tem
per
atu
re (
F)
Fan#1
Fan#2
Fan#3
Fan#4
Radial dep vs temp expt 1
Average Velocity Per Cross-Section
Average Cross-Sectional Air Flow
Average Volumetric Flow
0
500
1000
1500
2000
2500
3000
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
Radial position (ft)
Rad
ial p
osit
ion*
Vel
ocit
y of
air
(ft
/min
)
Fan #1
Fan #2
Fan #3
Fan #4
Volumetric Flow
How to solve for with formulas and trapezoidal rule
Don’t forget results from expt 1
Volumetric Flow (cu. ft/min)
results
Dry Bulb Air Intake Temperature
Intake Temp (°F) Inside Outside
Fan#1 94.5 95.7
Fan#2 93.6 95.3
Fan#3 91.2 93.1
Fan#4 90.1 90.5
Average 92.4 93.7
Humidity
Tell about relative humidity (data taken)
Absolute humidity being same in and out
RH from psychrometric chart enthalpy
Mass Flow Rate *check density at exit temp
Radial Section(in)
Cross-Sectional Area (ft²)
Density (lbm/ft³)
Avg Velocity (ft/min)
Mass Flow Rate(lbm/min)
1 0.15 0.0699 516 5.4
7 1.62 0.0699 2162 222.1
13 4.67 0.0699 2110 449.9
Mf = (density)*(area)*(velocity)
Heat Generated
Compressor Run Times
Date A B
8/20/2008 Starts 1915 1915
Running hours 3039 2887
8/21/2008 Starts 1917 1917
Running hours 3060 2890
8/22/2008 Starts 1919 1919
Running hours 3081 2891
8/25/2008 Starts 1923 1923
Running hours 3125 2920
Block Diagram
With values that have been solved for
Conclusions
Temperature is highest at the center of the fan and lowest surrounding the edges
Velocity is the least in the center of the exhaust
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