Unglazed solar pool heaters are typically sized based on surface area, not
gallons, because most of the heat loss occurs at the surface. They are
rated in daily BTU output, but the test condition rating can be deceiving.
You are really trying to overcome the loss of heat in the long-term, not
heat
1 BTU = energy required to heat 1 lb of water 1 degree F in 1 hour
1 gallon of water = 8.34 lbs @ 62F
15000 gal water = 125,100 lbs
A 100 kBTU heater would heat the pool about 0.7F per hour.
Sent from my iPhone 5s
> On Apr 5, 2015, at 7:49 PM, Jay wrote:
>
> Hi Tom
>
> Is your doubling of
Hi Tom
Is your doubling of the HE an rule of thumb or is there a formula?
As to system information.
510 sq ft collector
100,000 btu HE ( main problem I think)
70,000 gal pool
Uncovered ( other main problem. )
The problem is that it's not getting the pool warm.
Thanks for all the help and ad
Most heat exchangers for swimming pools are designed for boilers delivering
140F or 190F as a heat source based on the size and/ or the number gallons in
the pool . The solution for a low temperature source like solar in order to
keep the approach temperature low to the flat plate collectors ( a
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