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Thread: Cooling tower piping design
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23-01-2008, 10:58 AM #1
Cooling tower piping design
Context:
Rectangular cross-flow cooling towers of about 200RT per fan, for water cooled chillers for commercial air-conditioning in a tropical climate.
Some cross-flow cooling towers have piping arranged like in attached photo - incoming warm water pipe is submerged for a considerable length in the bottom basin, which seems sub-optimal.
How much impact do you think this has on efficiency?
I imagine there is a formula for estimating the heat flow from warm water thru a given area of PVC pipe into cooler water. Any pointers?
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23-01-2008, 09:42 PM #2
Re: Cooling tower piping design
hellow every one i am magdy akl from egypt my work mainly related to cooling towers and fans
i work as advisor or cnsultant for sme contractors in my area.
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23-01-2008, 09:48 PM #3
Re: Cooling tower piping design
did some one gave you any comment on this i wany to see it ?
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23-01-2008, 10:29 PM #4
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23-01-2008, 10:30 PM #5
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24-01-2008, 04:33 AM #6
Re: Cooling tower piping design
The photo is from a no-name tower, it is newly assembled, not in use yet.
My sites have a few other cross flow towers of various makes.
And I noticed that the Shinwa's have minimal submerged length, about 6 inches of vertical riser.
And yet a no-name seemingly under-performing tower has lots of submerged horizontal runs. Sticking a thermometer probe into the basin at various points showed more than 1 degree C rise near the pipes.
A probe stuck into drips in the infill from outside might read 25C while a probe stuck in the basin might read 27C. I want to measure the temperature of water that is just dripping into the basin, I would need to be inside the CT while it is running, and use a little cup...
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24-01-2008, 07:00 AM #7
Re: Cooling tower piping design
looks to me like it's piped backwards
look here to see how a cross flow is normally piped
http://en.wikipedia.org/wiki/Cooling_tower#HVAC
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