energy "payback" of PV's [RE-wrenches]

[Joel Davidson]

Greg,
Thanks for the correction. Too many equal signs. A million BTUs are definitely more
equal that one BTU. Alas, the tyranny of the majority.
Best regards,
Joel Davidson

Greg Egan wrote:

> Joel,
>
> I'm sure you and most others on list already know, but for the benefit of
> others, only 1 BTU is needed to raise the temperature of a pound of water 1
> degree F. It takes more if you're trying to change a pound of ice to a pound of
> water, or boiling a pound of water to make steam, because you're changing state
> and there's more work involved.
>
> Best,
>
> Greg
>
> --
> Greg Egan
> Alaska Renewable Energy
> 981 Gold Mine Trail Fairbanks, Alaska 99712
> Phone: 907-457-4299; Fax: 907-457-4290; Email: gegan at renewalaska.com
> URL:  http://www.renewalaska.com

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