SOLUTION: The rate of heat lost through a 3.5 inch thickness of insulation is 2200 Btu per hours. What is the rate of heat lost through a 5-inch thickness of the same insulation?

Question 446645: The rate of heat lost through a 3.5 inch thickness of insulation is 2200 Btu per hours. What is the rate of heat lost through a 5-inch thickness of the same insulation?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The rate of heat lost through a 3.5 inch thickness of insulation is 2200 Btu per hours. What is the rate of heat lost through a 5-inch thickness of the same insulation?
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thickness and loss of heat are inversely related.
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h = k/t
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Solve for "k" using "heat lost through a 3.5 inch thickness of insulation is 2200 Btu"
2200 = k/3.5
k = 3.5*2200 = 7700
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Equation:
h = 7700/t
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What is the rate of heat lost through a 5-inch thickness of the same insulation?
h = 7700/5 = 1540 Btu per hour
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Cheers,
Stan H.
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