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It takes 8.34 BTU to heat 1 gallon of water 1 degree F. Take 8.34 BTU times number of gallons to determine energy needed to raise pool 1 degree F. Then multiply by how many degrees you need to raise the temperate of the current pool temperature to the desired temperature. Example: 8.34 * 30,000 gal = 250,200 BTU need to raise temperature 1 degree F Next multiple by the number of degrees to warm, say the pool is 55 F. 80F - 55F = 25F. 250,200 BTU * 25 F = 6.255 million BTUs to heat the pool to 80 F. This does not take into account the loss of energy to the surroundings but gives you a starting point to determine the energy needed to heat a mass of water.
How much water do you take out of a 55 down to be 20%
probably more than one second
Seriously? 750 divided by 25 = 30. 30 gallons of gas.
It is a question of cubic feet, not square feet.
14 hours
Around 3 hours
To heat up a tankful of cold water will take about an hour initially. Once it's hot, the heaters will automatically come on when temperature drops a bit .
Anywhere from 6- 35 hours. Lol. No it should take around 2 hours
depends on the wattage of the elements along with the temp of the cold water but i would guess an hour or two
This depends how many kilowatts are running through the element, but it can take anything from one to two hours.
depends how big the heating source is
three seconds
There is no standard length of time that it takes for a gallon of water to freeze. The amount of time it takes for a gallon of water to freeze can vary depending upon many different things such as temperature.
This depends on many factors.
This depends on many factors.
The specific heat of water determines how much energy is needed to heat water.