Similar concept to a recent thread here -
very low power density now - plenty of room for improvement
https://scitechdaily.com/harvesting-energy-at-night-solar-cell-keeps-working-long-after-sun-sets/
funding likely to be available from Arabia
My Mitsubishi Ecodan air source heat pump works between -18 to +35°C...
https://library.mitsubishielectric.co.uk/pdf/book/PUZ-HWM140VHA_-BS#page-2
Nick Palmer
On the side of the Planet - and the people - because they're worth it
On Wed, 13 Apr 2022 at 19:41, Jed Rothwell wrote:
> H LV
I should explain that in Atlanta, when they install a heat pump, they
include a small, auxiliary, el-cheapo gas fired furnace along with it. It
seldom turns on. I don't know about Florida and other warm places.
In rural Japan where the walls are made of paper, they used to heat with
kerosene
H LV wrote:
> When temperatures fall to 25 to 30 degrees, a heat pump loses its spot as
>> the most efficient heating option for an Atlanta home.
>>
>>
> Apparently heat pumps have improved a lot over the last decade. This
> article says they now work well down to -10F or lower.
>
I looked at
Demonstrate the "toy" to a small number of friends and trusted colleagues.
Provide snacks and drinks.
Harry
On Tue, Apr 12, 2022 at 6:00 PM Jonathan Berry
wrote:
> Interesting idea.
>
> And while I don't think there are many things that could be introduced as
> a toy (Otis T. Carr's patent
This is the kind of toy that is needed. People have made attempts to
emulate but as yet no one has succeeded. They need to try harder.
I believe it worked.
> "Bruce Welsh is an electronics engineer with* the o*pen spirit which has
> been devoted to alternative energies for twenty years. It is
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