Swimming pool heating

[riscy]

Has anyone got good reference, research paper detailing how swimming pool losses is determined and calculated?

For example, most common information from website and books say 70% is due to water losses into air, 20% due to radiation and 10% is due to conduction losses into soil.

I like to know where 10% figure come from and the proof, assumption they used.

Simple heat transfer calculation with U=0.5W/m2K suggest (with soil temp 10C and pool water at 27C) the losses in contrast appear to be much higher than simple assumption 10%.

There is no material within ASHRAE covering pool losses via wall.

Much appericated.

 

[willard3]

ASHRAE has heat loss calculations in natatotium design.

 

[ChrisConley]

Most of the pool heater manufacturers, as well as companies that focus on pool ventilation (PoolPak, etc) have stacks of information on heating pools.

Rather than guessing the percentage, you could work out the heat loss (as you have) through the wall at steady state and add it onto your other heat loss calculations.

The heat loss calculation from evaporation, radiation and convection are all available from a variety of sources.

 

[AbbyNormal]

I would bet all the equations used stemmed from or evolved from what was developed for Dectorn's Dry-o-trons

the biggest heat loss from the pool is evaporation

Try searching for Reinhold Kittler he pioneered it all

Take the "V" out of HVAC and you are left with a HAC(k) job.

 

[AbbyNormal]

water at 1000 btu/lb may just dwarf what conducts out through the pool

Take the "V" out of HVAC and you are left with a HAC(k) job.