alt.energy.renewable

On Feb 10, 4:50=A0am, "Alex Chiani" wrote:
> "Bruce Richmond" ha scritto nel messaggionews:88fbaf=
b7-5ad6-4adc-90e8-22c3ba153933@p69g2000hsa.googlegroups.com...
>
> > Just wondering if anyone has ever heard of one. =A0Seems like a
> > reasonable idea. =A0Works just like an absorption fridge except put the
> > cool outside and the hot inside. =A0All the waste heat would go toward
> > heating the house, as would the heat from the coil. =A0The cooling
> > circuit could cool the air outside in mild climates or the ground in
> > cold climates, making it a geothermal heat pump.
>
> > Bruce
>
> I'm a great fan of absorption heat pump systems, too. A Swedish company is=

> developing a such machine :
>
> http://www.climatewell.com/index.phphttp://www.climatewell.com/index.php?p=
ageId=3D34
>
> " a solar powered climate system can fully meet the heating and cooling
> requirements of a residential house...hot water is the energy source for t=
he
> air conditioners, which hence use only an absolute minimum of electricity.=

> It is thus also possible to use hot water from district heating or
> co-generation to power the systems "
>
> Two main applications are envisaged: solar thermal plants and where
> operated, district heating networks, both are able to produce hot water at=

> the right temperatures (about 90 =B0C degrees) to power the machine
>
> Moreover, the machine achieves, based on a 25 m^2 of solar thermal plant
> installed, an electrical COP of 77 (heat produced / electricity in) and a
> thermal efficiency of 68% (% heat or cooling produced / heat in) in coolin=
g
> mode (10 to 20 kW of capacity) and, respectively, 96 and 85% (25 kW of
> thermal power) in the heating mode.
> What do you think about? I'd like to see more data on how efficient and
> costly this heat pump is when compared with traditional compression heat
> pumps before coming up with any opinion or conclusion on it

I think if I had a source of 90 =B0C water to power it I could heat my
house with that and forget about the heat pump :-)