From the HBD Archive
From: "2645 RUTH, GUY R." <>
Subject: BTUs
Date: 1989-11-13 14:54:00 GMT

A friend and I are building a one barrel brew kettle from an old autoclave and
are wondering about a heat source. With a little calculation, I was able to
figure that a minimum heat source should put out approx. 15,000 BTUs. I used
the following figures:

31 gallons @ approx. 8#/gallon
1 BTU to raise 1# of water 1 degree F
temperature change of 60 degrees to achieve boiling
14,880 BTUs

The one thing missing from the calculation that I'm very interested in is a
reference to time. For all I know I could be heating the kettle several hours
to achieve a rolling boil. If I were to get a burner that's too hot, I wouldn't
want to start a melt down either. Can anyone help?

-- Guy

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