Hi dave, its under FAQ so I have pasted it below for you .
regards
Brian



"How does the greenhouse heat sink work?
Some details are in the book, but half the adventure is working out for
yourself and thereby customising you solution. All you need is:

The heat sink is imploded (broken) glass - we used bottles from various
parties and the local pub - imploded courtesy of Krysteline
www.krysteline.net
Big hole - we lined it with polystyrene that came as packaging
Pipes were standard waste pipes for under sinks etc
Fan was a small 12V computer fan from a market £1.20 - in a box made of
scrap wood
A 12V deep cycle leisure battery
Small 11w solar panel and charge controller
Old chimney cowl for the air to be pushed out the glass

Air sucked down from the apex (of the greenhouse)heats the broken glass
under the floor. Fan runs 24 hours a day. As the greenhouse cools the cooler
air is still pumped through the glass, but when it comes out through the
cowl, at floor level, the glass has warmed it so a constant supply of warm
air is now being pumped through."

I hope you can understand this.......it is basically a storage rad made of
broken glass as a heat store
circulated through 2"(?) pipes.



do you have any leads regarding export metering? The one thing I have found
since starting out on this green trek, is the almost non existant help from
the authorities.........only thre hams as usual!!!

very blue but going green slowly.......cheers brian





<quahog@...>












>From: Dave Brown Reply-To: Beyond_cheap_fuel@...
>To: Beyond_cheap_fuel@...
>Subject: RE: [Beyond_cheap_fuel] Re: Conservatory heating for free ? Is it
>a possibility ?
>Date: Sun, 08 Oct 2006 09:06:31 -0500
>
>Brian,
>
>I haven't found the broken glass information, but I'm reading the
>forums with some interest.
>
>Thanks,
>
>At 07:05 AM 10/8/2006, you wrote:
> >Check out the site...... www.itsnoteasybeinggreen.org
> >
> >they had a broken glass heat sink which heated the greenhouse using a
>small
> >solar fan.
> >
> >
> >
> >Brian Moyler
>
>Dave Brown
>Green Bay, WI
>http://www.myspace.com/quahogwi
>
>
>
>