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re: battery temperature
13 jul 2001
george l ghio wrote:
>...how much heat do i need to get an extra 2.5 hours
>of energy, and i need it just after the commercial break.
hours are not energy, george.
>you know that it can not be done.
i know it can :-)
>> we've already done calcs like that here, george, after your claim it
>> would take a horribly large amount of energy. you might try figuring
>> this out yourself once, as a self-styled "solar power consultant."
>>
>> start with the specific heats of lead and water and the dry and wet
>> weights of a battery. post the answer here.
it would be interesting to look at the capacity vs temp curve for some
battery and compare the amount of energy needed to heat the battery vs
the amount of capacity "released" by the heating. (if they were the same,
it wouldn't make much sense to warm the battery with its own juice.)
there are some old us patents covering this useful technique.
nick
nicholson l. pine system design and consulting
pine associates, ltd. (610) 489-1475/0545
821 collegeville road fax: (610) 489-7057
collegeville, pa 19426 email: nick@ece.vill.edu
computer simulation and modeling. high performance, low cost, solar heating
and cogeneration system design. bsee, msee. senior member, ieee. registered
us patent agent. web site: http://www.ece.vill.edu/~nick
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