Re: gEDA-user: [OFF] high current amplifier

[John Doty <jpd@xxxxxxxxx>]

On May 20, 2009, at 1:10 PM, Ethan Swint wrote:

>
>>>>> I think it's a 60 ton.
>>>> Or it's a 60 kbtu, I don't recall - it's got "60" in the model
>>>> number
>>> 60 tons would be almost enough for a big-box store!  60kbtu sounds
>>> more
>>> like it, ~5 tons, enough for a 3000 sq ft house.
>>>
>>
>> And neither makes dimensional sense ;-)
>>
> 1 ton refers to the equivalent cooling power as melting 1 ton of ice -

Still not dimensionally right. Need time in the denominator.

Why do engineers use so many whacky units? Why pretend Rumford and  
Joule never existed? What's wrong with watts?

> back when A/C units would freeze ice at night and let it melt  
> during the
> day.  Not a bad way to level the electrical load, really.  I've  
> thought
> about putting a couple of 500 gal tanks in my crawl space to do
> something similar...

I use these:

http://www.thenaturalhome.com/heatstorage.htm

in my sunroom.

>
> -Ethan
>
>
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John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd@xxxxxxxxx




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