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Thread: BTU Calculation
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28-09-2011, 02:09 AM #1
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BTU Calculation
This is a question for a test I am studying for. Let me know if anyone knows how to solve this BTU calculation.
There is a 3 x 5 ' window on a wall 20 feet long and 8 feet high. The room temperature is 80 degrees F and outside temperature is 0 degrees F. How much BTU is lost through this wall?
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28-09-2011, 02:15 AM #2
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Re: BTU Calculation
others here will tell you to google it but, what the hell.
15ft2 X dT X U value (which is 1/r value of the window)
plus 160ft2 - 15ft2 X dT X U (of the wall)
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28-09-2011, 02:55 AM #3
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Re: BTU Calculation
Thanks again Mike.You are a big help.
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30-09-2011, 03:34 PM #4
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Re: BTU Calculation
Others will tell you it never gets to 0F in Las Vegas
... what mikeholm said but you will need the U value for the window and wall (oh and don't forget to delete the area of the window from the area of the wall)
