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How many btus does it take to raise of 5 pounds of water to 5 degrees Fahrenheit?
25
How many btu per hour would be produced in a 12-kW electrical heater?
There are at least 5 different definitions for slightly different BTUs. One of them says that 1 kWh = 3412.14 BTUs. Let's use that one. 1 kWh = 3412.14 BTUs 12 kWh = 40,945.68 BTUs
How many Btus will it take to raise 10 pounds of Ice from -5 to 220 Degrees?
If you're in Celsius, 13459.5 Btu's. If you're in Fahrenheit, 12632.5 Btu's.
How many btu's must be removed from 1lb of water at 200 degrees for it to end up as ice at 30 degrees?
There are no units for the temperature. The temperature change could be 230 Celsius degrees or 170 Fahrenheit degrees (94 Celsius degrees). In fact they could be in less commonly used units: eg Reaumur.
What is the 500 in btu equals gpm x 500 x temperature rise?
There are 12,000 Btus per ton of cooling. In order to determine tons of cooling, the formula is: Tons = (dT x GPM) / 24 If you would like to know the tons of cooling in Btus, you would multiply this formula by 12,000.. Tons (Btu) = (dT x GPM x 12,000) / 24 Basic arithmetic yields: Tons (Btu) = (dT x GPM x 500) {12,000 / 24 = 500}
