Btu Calculator Pool Water

H total total heat load btu hr w.

Btu calculator pool water. When you look to purchase a new pool heater attributes like ignition style efficiency rate salt compatibility heat output and heater size btu are very important factors. Remember to measure from the depth of the water rather than the height of your wall. A 400k btu heater will roughly heat your pool twice as fast as a 200k btu heater but it also burns gas twice as fast. 4 980 000 24 207 500 btu per hour.

H surface heat loss from pool through the surface mainly evaporation of water btu hr w. H heat up heat load required to increase the pool temperature btu hr w. 1 watt is approximately 3 412 btu per hour. Here is a great tool to calculate the volume or capacity of your pool.

More complicated pool shapes will require multiple calculations and adding them together. In order for 20 000 gallons of pool water to heat 30 degrees you would do the following calculations. The exact time needed to change the pool temperature will vary based on evaporation rate convection losses thermal radiation losses and conduction losses explained more below. Heating up a pool versus a pool and spa combination requires less btu power.

For more detailed information on the calculations read more below the calculator. The total required heat to increase and maintain the temperature in an outdoor pool can be calculated as. A btu is an abbreviation for b ritish t hermal u nit which is the amount of energy required to raise 1 pound of water 1 degree fahrenheit at sea level. A btu is a relatively small amount of energy.

Now divide this btu total by 24 hours to determine the btu hour required to heat the water. H total h surface h heat up 1. 1 btu 1 055 joules 252 calories 0 293 watt hour or the energy released by burning one match. What is a btu.

About equivalent to the heat generated by striking 1 stick match. Usually if you have a pool and spa combination we recommend purchasing the largest btu size available because you re not just heating up a single body of water. Btu calculator btu formulas for water circulating heat transfer. This figure represents the heater output necessary to heat the pool to the desired temperature in 24 hours.

The british thermal unit or btu is an energy unit. How do i calculate btu size for heating a swimming pool. Multiply that result by 12 to arrive at the required btu per hour output of the heater. This calculator is approximate because it doesn t account for the many factors that impact heat loss in the swimming pool.

Pool heaters are sized according to the surface area of the pool the difference between the desired pool water temperature and the average air temperatures of the coldest month of pool use. I ve run then calculation through the formula above and it s coming up with a 600 000 btu boiler to raise the water temp 68f in 5 hours to 90f which seems to be a really high.