Swimming pools gain heat naturally
during the day by absorbing the infrared radiation from the sun. An open
pool gains almost twice the amount of the sun's energy than a screened
pool due to the blocking effect of the screen enclosure, very similar to
an umbrella with holes in it. The net result in the Central Florida (we
are in Maryland) area is a pool that is 6-8 Deg. F. warmer than it's screened
Solar systems can be sized to gain
anywhere from as little as 4 Deg. F up to as much as 16 Deg. F before cost
effectiveness becomes an area of concern. The dilemma being that sizing
for extreme conditions when the sun's energy is relatively weak and the
outside ambient air temperatures are low means that the collector area
required becomes cost prohibitive. On a 58 Deg. F. day swimming may not
even be desirable, or said differently even if the pool is warm- is
anyone in their bathing suit.
|The amount of heat gained is a function on the amount of sun received
as well as that produced by heating equipment. Including solar energy.