Posted by Ron Rosenfeld on February 8, 2009, 7:17 pm
On Sun, 8 Feb 2009 17:50:44 +0000 (UTC), RED@ix.com wrote:
>> If I were to generate our hot water by solar, there is no question that it
>> would be much less expensive to put in a solar hot water system, than it
>> would be to add enough PV to run an electric hot water heater.
>That problem has been solved for a long time. Just put in two ponds, one
>low and one high, and use hydropower when draining the high pond into the
>low pond. This is a completely free solution, and will generate plenty of
>electricity to run a water heater.
Your solution is an excellent one, provided the upper pond fills by itself,
either through springs or a stream or even rain water. But if you have to
generate the power to fill the upper pond, which would be the case, for
example, at our home, the solution is no longer "free".
--ron
Posted by Curly Surmudgeon on February 8, 2009, 7:52 pm
On Sun, 08 Feb 2009 14:17:36 -0500, Ron Rosenfeld wrote:
> On Sun, 8 Feb 2009 17:50:44 +0000 (UTC), RED@ix.com wrote:
>
>>
>>> If I were to generate our hot water by solar, there is no question
>>> that it would be much less expensive to put in a solar hot water
>>> system, than it would be to add enough PV to run an electric hot water
>>> heater.
>>
>>That problem has been solved for a long time. Just put in two ponds,
>>one low and one high, and use hydropower when draining the high pond
>>into the low pond. This is a completely free solution, and will
>>generate plenty of electricity to run a water heater.
>
> Your solution is an excellent one, provided the upper pond fills by
> itself, either through springs or a stream or even rain water. But if
> you have to generate the power to fill the upper pond, which would be
> the case, for example, at our home, the solution is no longer "free".
> --ron
The original context was windpower to move the water uphill.
--
Regards, Curly
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Arrest Bush
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Posted by BobG on February 8, 2009, 7:54 pm
> Your solution is an excellent one, provided the upper pond fills by itself,
> either through springs or a stream or even rain water. But if you have to
> generate the power to fill the upper pond, which would be the case, for
> example, at our home, the solution is no longer "free".
==========================
=====================
You need an extra 2KW of solar that gets 4 hr of sun to refill the top
pond.
Posted by RED on February 8, 2009, 8:02 pm
> > Your solution is an excellent one, provided the upper pond fills by itself,
> > either through springs or a stream or even rain water. But if you have to
> > generate the power to fill the upper pond, which would be the case, for
> > example, at our home, the solution is no longer "free".
> ==============================================
> You need an extra 2KW of solar that gets 4 hr of sun to refill the top
> pond.
No, I'll use my excess windpower. That makes it free.
Posted by z on February 8, 2009, 8:55 pm
>> > Your solution is an excellent one, provided the upper pond fills by
>> > i
> tself,
>> > either through springs or a stream or even rain water. But if you
> have to
>> > generate the power to fill the upper pond, which would be the case,
>> > f
> or
>> > example, at our home, the solution is no longer "free".
>> ========================
> =====================> You need an extra 2KW of solar that gets 4 hr
> of sun to refill the top
>> pond.
>
> No, I'll use my excess windpower. That makes it free.
>
once they finish cloning those mastadons we'll just all have giant
tredmills hooked to generators. Problem solved.
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>> would be much less expensive to put in a solar hot water system, than it
>> would be to add enough PV to run an electric hot water heater.
>That problem has been solved for a long time. Just put in two ponds, one
>low and one high, and use hydropower when draining the high pond into the
>low pond. This is a completely free solution, and will generate plenty of
>electricity to run a water heater.