PoolDisk™ Technology - How it Works!
Swimming pools lose the majority of their heat through evaporation. Evaporation cools a pool in much the same way that sweat cools your skin. In a typical pool, 50% to 70% of a pool's heat loss comes from evaporation.
PoolDisk will help keep your pool warm by reducing evaporation. In addition, the charcoal colored disks absorb solar energy, helping to warm the pool when the sun shines.
PoolDisks can reduce your energy costs by 50% or more. For best performance from PoolDisk, we suggest 80% coverage of your pool surface. You may also choose to cover less than 80% of your pool. Proportional energy savings will result.
PoolDisk technology is the subject of a pending US Patent Application.
More Detail:
References:- The US Department of Energy has a useful page on reducing swimming pool heating losses with pool covers: http://www.energysavers.gov/your_home/water_heating/index.cfm/mytopic=13140
- The Geotechnical, Rock and Water Resources (GROW) Library has regional information to estimate a swimming pool's evaporative loss:
http://www.grow.arizona.edu/Grow--GrowResources.php?ResourceId=208
- The Energy Information Administration has a page tabulating electricity costs:
http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_a.html
- "Evaporation Rate of Water in a Vessel", Kazuo Hisatake, Satoko Tanaka, and Youko Aizawaa, J. Appl. Phys. Vol. 73, No. 11, 1 June 1993, pp. 7395 - 7401.
- "Apparatus for Measuring the Evaporation Rate of Water Across an Air/Water Interface", Yoshikiyo Moroi, Takaharu Yamabe, Osamu Shibata, and Yutaka Abe, Langmuir 2000, 16, pp. 9697-9698.
- "Calculating Pool Heating Cost Savings from Reducing Evaporative Losses", PoolDisk, LLC, July 2009, pdf.
