Cooling tower in winter - slow down fan speed 1

spacebeer · May 6, 2017

Hi,

I need some help here with some calculations.
I have the following cooling tower:
Thermal power: 1997 kW
Water flowrate: 26,5 l/s
Water inlet temp. (process): 48,5 ºC
Water outlet temp. (process): 30,5 ºC
Dry bulb temp.: 37,0 ºC
Wet bulb temp.: 24,0 ºC
Air flowrate: 40,1 m3/s

So i can obtain from the psychrometric chart the outlet conditions of the air in this situation.

But, if i have the following conditions in the winter:
Dry bulb temp.: 8,0 ºC
Wet bulb temp.: 6,3 ºC
Is it possible to slow down the fan speed ??

SAK9 · May 6, 2017

Tower fan speed control based on sump temperature as a first step of control as well as a tower bypass system should do the job for you in winter

spacebeer · May 6, 2017

Ok thanks!
But i'm trying to preview how much can i save in this winter conditions.
So, for this i want to know the air flowrate in this situation. That's my problem....

Thanks

willard3 · May 7, 2017

Youir energy savings will depend upon DB and coincident WB temperatures in winter

chicopee · May 9, 2017

SAK9 has the answer about a bypass system for winter operations. Such bypass system for example is used by ice skating rinks in my region.

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Cooling tower in winter - slow down fan speed 1

spacebeer

Mechanical

SAK9

Mechanical

spacebeer

Mechanical

willard3

Mechanical

chicopee

Mechanical

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