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How many BTUs and what kind of heat pump do you need to heat a 16x24 4ft deep above ground pool to a temp of 80F from the current 70F?
Wiki User
∙ 8y ago
It takes 1 BTU to raise 1 pound of water 1 degree fahrenheit. To answer your question, you need to know two facts: (1) there are 7.48 gallons in a cubic foot, and (2) 1 gallon of water = 8.34 pounds. So, your 16 x 24 x 4 foot pool holds 1,536 cubic feet of water, which translates into 11,489 gallons of water. Then multiply that by 8.34 pounds per gallon, to arrive at a total of 95,820 pounds of water in your pool.
If you have a 100,000 BTU pool heater (meaning it delivers 100,000 BTU per hour), then for each degree Fahrenheit increase in temperature, it will require 95,820 pounds divided by 100,000 pounds per hour, or 0.96 hours. To increase your pool ten degrees from 70F to 80F will require 9.6 hours.
Since some heat is constantly being lost due to evaporation, and the efficiency of the gas heater is never 100%, it will actually take a little more than than 9.6 hours.
Wiki User
∙ 8y ago
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