Water evaporation rate from underground tank
Water evaporation rate from underground tank
(OP)
I've got two connected underground concrete water storage tanks that are losing water at what seems to be a high rate. There is limited airflow through these tanks as there are only small breather holes in the lids (8 X .25" dia), connected drain piping to an evap tower and two submerged turbine pumps. The system has not been run since filling the tanks around the beginning of May 2008 (to 5800 gal) and today the tanks show only 3700 gal.
Does this seem like a reasonable amount of evaporation for a "closed" tank (~1000 gal per month)? Or do I have a leak? I realize this could be calculated but it would be difficult to measure the air velocity across the water's surface (if there is any).
Does this seem like a reasonable amount of evaporation for a "closed" tank (~1000 gal per month)? Or do I have a leak? I realize this could be calculated but it would be difficult to measure the air velocity across the water's surface (if there is any).





RE: Water evaporation rate from underground tank
No it does not seem reasonable for evaporation. Especially since you say the tanks are underground.
I'd be looking for leaks.
Patricia Lougheed
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RE: Water evaporation rate from underground tank
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RE: Water evaporation rate from underground tank
RE: Water evaporation rate from underground tank
http://virtualpipeline.spaces.msn.com
"What gets us into trouble is not what we don't know, its what we know for sure" - Mark Twain
RE: Water evaporation rate from underground tank
RE: Water evaporation rate from underground tank
Do you have any details on type of concrete used?
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"What gets us into trouble is not what we don't know, its what we know for sure" - Mark Twain
RE: Water evaporation rate from underground tank
RE: Water evaporation rate from underground tank
RE: Water evaporation rate from underground tank
RE: Water evaporation rate from underground tank
Good thing it was only water in them.
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"What gets us into trouble is not what we don't know, its what we know for sure" - Mark Twain
RE: Water evaporation rate from underground tank
Ted
RE: Water evaporation rate from underground tank
http://virtualpipeline.spaces.msn.com
"What gets us into trouble is not what we don't know, its what we know for sure" - Mark Twain