1. Objectives Control: Cooling towers Multizone vs. Single system
VAV vs. CAV
Cooling towers

5. Cooling towes Similarity and difference between
Evaporative coolers and
Cooing towers

6. Cooling Tower
Similar to an evaporative cooler, but the purpose is often to cool water
Widely used for heat rejection in HVAC systems
Also used to reject industrial process heat

8. Cooling Tower

10. Solution Can get from Stevens diagram (page 272)
Can also be used to determine
Minimum water temperature
Volume of tower required

11. Summary
Heat rejection is often accomplished with devices that have direct contact between air and water
Evaporative cooling
Can construct analysis of these devices
Requires parameters which need to be measured for a specific system