Olin Lathrop wrote:
> Randy Glenn wrote:
> 
>>According to http://www.spe.org/spe/jsp/basic/0,,1104_1732,00.html 1
>>cubic foot of natural gas is 1025 BTU, and 1 Therm is 100,000 BTU.
>>
>>Then, thanks to the Google Calculator, we wind up with 1 cubic metre =
>>0.361975334 therm.
> 
> 
> This doesn't make any sense since the volume doesn't specify the mass of
> methane you're buying, but the amount of energy you get from burning it is
> proportional to the mass.
> 
> 
> ******************************************************************
> Embed Inc, Littleton Massachusetts, (978) 742-9014.  #1 PIC
> consultant in 2004 program year.  http://www.embedinc.com/products

My reference gives around 1000 BTU/ft^3 at standard atmospheric
pressure. And since natural gas is delivered at low gauge pressure
that value is pretty close. On my gas bill there is always a pressure
correction factor applied to the usage.

Jim

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