# Calculate How Many Solar Panels Are Required to Heat Pool

offer installation of solar panels heat your pool you will save money in the long run, since only associated cost is the cost of equipment and installation. Solar panel heating allows you to about six to eight weeks to extend your swimming season, and pleasant temperature during the bathing season for pools provide that receive limited sunlight. Solar panel outputs are measured in British thermal units or Btu.

Most solar cells produce approximately 40,000 Btu. To increase 1 liter of water by one degree, 8.33 Btu are required. In the depth of the shallow end and depth of the deep end of the pool and share a whole to obtain two medium depth.

**Calculate How Many Solar Panels Are Required to Heat Pool**

For example, if your pool ranges from three feet to 10 feet, average depth is 6 1 or 2 feet. Determine number of gallons in your pool. If your pool is round, multiply diameter by diameter by average depth by 5.9.

For oval pools, multiply length by width by average depth by 6.7. For square pools, multiply length by width by average depth by 7.5. For kidney-shaped pools, multiply length by average width by average depth by 7.

Multiply number of gallons in pool by 8.33 by desired temperature raise and then divide total by 24 hours. For example, to determine Btu required to heat 30,000 gallon pool 10 degrees 30,000 x 8.33 x 10 or 24 = 104,125 Btu per hour. Calculate number of Btu required to heat your pool by 10, 15, 20 and 25 degrees, to allow you to determine your heating options.

Determine number of Btu required to maintain pool’s temperature with average wind speed of 3.5 miles per hour. You need 10.5 Btu per square foot of surface area for every degree above air temperature that you would like to keep your pool. For example, if your pool is 12 by 20 and you would like to keep it 15 degrees above ambient temperature, multiply 12 by 20 by 10.5 to determine Btu required for each degree.

Multiply Btu required for each degree by number of degrees above ambient temperature that you would like to keep above, in this case 15. For example 12 x 20 x 10.5 = 2,520 x 15 = 37,800 Btu required to maintain temperature. Add Btu required to heat pool per hour to Btu required to maintain pool’s temperature to determine total number of Btu required to heat and maintain pool.

For example, 104,125 + 37,800 = 141,925 Btu per hour.

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