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Home > Archive > Alternative Power sources > November 2006 > Solar PV Panel Heating a HotTub
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Solar PV Panel Heating a HotTub
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| Mike@ClassicPlayfields.com 2006-11-27, 3:25 am |
| Here's what I'd like to do and would welcome any comments. I have an
outdoor hot tub that I have the ability to heat with an internal 12-24v
electric heater that was installed in one of the circulation pipes. So
I think that every watt of energy I get from Solar or wind can be fed
directly into this heater, by passing all the normal storage problems
associated. The tub normally runs many hrs a day with the 5Kw heater
working away so I don't think I could over power the water in it with a
few panels or even alot of panels. Is it safe to assume that any power
I put into the water is wattage I won't have to buy from the Power Co?
If I am not totally off the wall here is this a good time to buy as I
hear lots of stories of huge inovations just around the corner in PVs,
and wind. Any truth?
Thanks
Mike Purcell
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| Trygve Lillefosse 2006-11-27, 5:25 pm |
| On 26 Nov 2006 19:50:42 -0800, "Mike@ClassicPlayfields.com"
<Mike@ClassicPlayfields.com> wrote:
>If I am not totally off the wall here is this a good time to buy as I
>hear lots of stories of huge inovations just around the corner in PVs,
>and wind. Any truth?
Instead of PV, you sghould think of solar heating on this one.
You get mutch higher efficiency, lower price and simple installarion.
The drawback is that it will only do heating, primarily water. (Or air
trough radiators and such.)
--
SEE YA !!!
Trygve Lillefosse
AKA - Malawi, The Fisher King
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| Derek Broughton 2006-11-27, 5:25 pm |
| Trygve Lillefosse wrote:
> On 26 Nov 2006 19:50:42 -0800, "Mike@ClassicPlayfields.com"
> <Mike@ClassicPlayfields.com> wrote:
>
>
> Instead of PV, you sghould think of solar heating on this one.
Yes - but to answer the exact question, it's as good a time to buy as
any :-) Those "huge innovations" are _always_ just around the corner, so
it's not as if the value of anything you buy today is suddenly going to
plummet tomorrow.
--
derek
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| 5 KW heater on for 10 hrs a day uses 50 KW-hrs, or about $7.50 a day at
$.15 per KW-hr.
Panels are about $5 a watt.. a 200 W panel is about $1000... you'd need
25 of them! It would take 3000+ days or 10 years to save that much on
the electric bill. Do you use it at night? (not much sun at night below
the arctic circle...)
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