Re: Product idea

john larkin <jl@glen--canyon.com> wrote:

On Wed, 12 Feb 2025 18:27:09 -0000 (UTC), bp@www.zefox.net wrote:
 

Carlos E.R. <robin_listas@es.invalid> wrote:

 
Couldn't you burn gas, boil water, spin a generator to make
electricity, and heat your house with the condensate heat?
 
That would make free electricity.

 
Certainly, and it has a name. Combined cycle, or something similar. It
is a simple as running a diesel generator and heating the house with it
radiator, and a heat exchanger on the exhaust.

>
Long ago there was a residential product introduced:
https://hondanews.com/en-US/releases/honda-and-climate-energy-begin-retail-sales-of-freewatt-micro-chp-home-heating-and-power-system
>
Far as I know it failed commercially, but it's unclear what went wrong.
Capital cost might have been the stumbling block, as it surely would
be with a crypo-mining heater. A few kW of computers costs much more
than a few kW of nichrome wire resistance elements.
>
Thanks for reading,
>
bob prohaska

 
It doesn't say what the fuel source is. Does it burn gas, or is it an
electrically powered heat pump?

It burned natural gas. Output is electricity exported to the grid and
heated water for use in space heating or hot water. There's a video here:
https://www.youtube.com/watch?v=qwp96xOYwhQ
but if you search for "freewatt" you'll find many others.

bob prohaska