Cooling Tower

A Tower cools 875gpm from 95 degreesF to 85 degreesF at 72 degreesF
wet bulb temperature. What is the:

Range = Inlet Temp - Outlet Temp
(ex: Range = 95 - 85 = 10 degreesF)

Approach = Out Temp - Wet Bulb Temp
(ex: Approach = 85 - 73 = 13 degreesF)

Heat Rejection = Flow_Gpm X Range_DegF X 500
(ex: Heat Rejection = 875 x 10 x 500 = 4,375,000btu/hr = 4,375 MBH)

Typical Drift Loss = .002% X Recirculated Flow Rate
(ex: Typical Drift Loss = .00002 X 875 = .0175Gpm)

Evaporation Rate_Gpm = Flow_Gpm X Range_degF / 1,000
(ex: Evaporation Rate = 875 X 10 / 1,000 = 8.75gpm)

Bleed Rate_Gpm = Evap. Rate_Gpm / (Cycles-1)
(ex: Bleed Rate_{3 Cycles} = 8.75 / (3-1) = 4.4Gpm)

Make-up Water Requirement_Gpm = Evaporation Rate_Gpm X [Cycles/(Cycles-1)]
(ex: Make-up_{at 3 cycles} = 8.75Gpm x 3/2 = 13.1Gpm)



EQUALIZER SIZE CHART