Challenger Center Cooling Tower Performed By: Dianah Dugan Alex Saputa

Contents  Block Diagram  Schematic  Equipment  Data Collection  Results  Conclusion

Block Diagram of Cooling Tower Air Inlet Air Outlet T=93 °F h= 72 kJ/kg P= 1 atm RH= 60% T= 108 °F h= P= 1 atm RH= CT unit

Cooling Tower Schematic Outside Intake Inside Intake Exhaust

Schematic of Fan

Equipment  Anemometer  Yard Stick  Ladder  Sling Psychrometer  Psychometric Chart  Our Mighty Brains and Strong Backs

Average Velocity Per Cross-Section Radial Section Velocity (ft/min) 1"516 7" "2110 Total Avg 1596

Average Radial Air Flow

Average Air Flow

Average Volumetric Flow

Mass Flow Rate Radial Section (in) Cross-Sectional Area (ft²) Density (lbm/ft³) Avg Velocity (ft/min) Mass Flow Rate (lbm/min)

Radial Dependence of Temperature

Air Intake Temperature Intake Temp ( ° F) InsideOutside Fan# Fan# Fan# Fan# Average

Compressor Run Times

Conclusions  Temperature will vary based on units in or out of the shade  Velocity is the greatest towards the center of the fan blade  Velocity is the least in the center of the exhaust  Human error can easily affect the instruments used

Our Questions to You  How should we calculate the volumetric flow with an air velocity that is dependent on radial position?  Should we assume relative humidity is the same at intake and exhaust (we didn’t get the relative humidity reading for the exhaust)?