On 28 Mar, 21:57, "Howard Haigh" hh001c7439@$NOSPAMPLEASE
$blueyonder.co.uk wrote:
"Paul Waites" wrote in message

...



Hi all,

Last year there was a BBC2 programme called "Its not easy being green".

In one of the episodes the presenter Dick Strawbridge built a greenhouse
heater out of a computer cpu fan, solar panels and a bit of piping....

Now that I've erected a nice shiny a wanted to try out his idea (It
involved circulating the air from the top of the house back into the
gravel bed on the floor.

I can't find any link on the internet or the BBC's website..... Has
anyone tried this idea or knows where there are plans for such a scheme.

Thanks,

Paul.

You need to visit Dick's personal site though the information on it
regarding the greenhouse is brief - more info is promised to lie within his
book.

http://www.itsnoteasybeinggreen.org/...htm#greenhouse

HTH

Howard

Where I have come across heat sinks they have comprised of Pits 2 to
3ft deep set into the greenhouse floor and filled with stones from
cricket ball size to football size, and covered with a heavy wooden
lid with gaps of around 1/4 inch between planks. Warm air from the
roof area is pumped into the bottom of the sink and the stones
gradually warm, and give off heat through the night.
I had hoped to try pumping warm air through a tunnel formed from
concrete blocks under the benches, but 2 knee replacements have
prevented me crawling around under the benches. The idea being that as
with storage heaters the concrete would store the heat they gained in
the day and give it off through the night.

David Hill
Abacus Nurseries