When taking a bath, we use approximately 450 lbs of water. How much heat, measured in British Thermal Units (BTU) is required to heat the water from 60 degrees Fahrenheit to 104 degrees Fahrenheit?

Question

When taking a bath, we use approximately 450 lbs of water.  How much heat, measured in British Thermal Units (BTU) is required to heat the water from 60 degrees Fahrenheit to 104 degrees Fahrenheit?

Damon · Answer

I do not know the specific heat of water in obsolete units of BTU/(pound deg F). You do, use it in BTU heat input = Specific heat of water * 450 pounds * (104-60) degrees