Re: Using nuclear power to make renewables and a hydrogen economy cost effective
From: charliew2 (charliew2_at_ev1.net)
Date: 10/31/04
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Date: Sat, 30 Oct 2004 19:33:05 -0500
Don Lancaster wrote:
> charliew2 wrote:
>>
>
>>
>> Again, Dave, I think you're wasting your time here. Ian is probably
>> not going to understand that the efficiency is strictly dependent on
>> the source and sink temperatures, and has nothing to do with heat
>> exchange, unless that heat exchange is actually a heat leak to the
>> environment.
>>
>>>
>>> ************* DAVE HATUNEN (hatunen@cox.net) *************
>>> * Tucson Arizona, out where the cacti grow *
>>> * My typos & mispellings are intentional copyright traps *
>
> A more correct statment would be that the BEST POSSIBLE efficiency is
> strictly ....
Agreed. I thought of this, but wasn't quite as forceful in stating it.
>
> The rest of the efficiency is crucially dependent on heatsink
> characteristics.
> It is trivially easy to get most of the delta-T drops across the input
> and output thermal interfaces, leaving absolutely nothing (and often
> LESS) for Carnot to work with.
>
> Especially with low delta-T schemes.
>
> For instance, it is trivial to build a Peltier cooler with a 20 degree
> drop across itself and a 40 degree rise across its heatsinks.
Can you give me a link that has a good example of the low delta-T schemes?
I'm not familiar with a Peltier cooler, and a picture would help enormously.
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