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btu

The British thermal unit (BTU or Btu) is a unit of heat; it is defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. It is also part of the United States customary units. Heat is now known to be equivalent to energy. The modern SI unit for heat and energy is the joule (J); one BTU equals about 1,055 J (varying within the range 1,054–1,060 J depending on the specific definition; see below).
While units of heat are often supplanted by energy units in scientific work, they are still used in some fields. For example, in the United States the price of natural gas is quoted in dollars per the amount of natural gas that would give 1 million BTUs of heat energy if burned.

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  4. T

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  5. O

    How many BTUs to I need? (Yes, that question again.)

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  7. D

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  8. S

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  9. D

    Rad Replacement Advice is BTU or Type King!

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  10. D

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  11. L

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  12. Russel

    Any point in over-speccing BTU vs. what is required? Read more: http://www.diynot.co

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  13. A

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  14. A

    Does thin copper pipework prevent radiators from achieving their rated BTU output?

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  15. M

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  16. L

    Btu - kw

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  17. R

    Baxi condensing boiler btu output.

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  18. H

    BTU Calculator

    Is the BTU Calculator still available on this site?
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