Re: cool/cold climate greenhouse
- Thats very intresting, thanks for the links!
More on heating greenhouses in substainable & energy efficient ways:
Has any of you done any experimenting with compost-heating?
--- In firstname.lastname@example.org, "Ossi Kakko" <ossi@...> wrote:
> Just want to let you know that Jerome Osentowski in Central Rocky Mountain
> Permaculture Institute has excellent cool/cold climate greenhouse design
> utilizing the subterranean heating and cooling system, aka climate
> battery. See more info:
> :) ossi (from finland)
> > You have to have lots of panels and lots of storage capacity to handle the
> > nights and the unexpected days when there is cloud cover. In northern
> > latitudes, solar in winter is a dream or a very, very expensive reality.
> > From experience, it doesn't take many hours to drain a storage bank if it
> > is not being replenished every day and I do mean every day. An overcast
> > day is a big, big problem. Two days in a row means turning on the mains
> > or a generator. When ever I look at a so-called off-grid setup, the
> > moment I see a generator is the moment that I call foul.
> > Since you are trying to minimise heat loss, it would seem to make sense to
> > look at construction. Obviously, south facing is critical. If that's
> > where the sun is strongest, why expose the northern wall to the air?
> > Insulate it, ideally, by building into a hill side and burying all but
> > that south wall. Build on a concrete slab that is painted black.
> > MikeH
> > --- In email@example.com, john willis <wilf1946@> wrote:
> >> Hello Traveller in ThymeTotally agree about heating greenhouses with
> >> fossil fuel but I do feel they are pretty good passive solar collectors
> >> on sunny days and also pv panels can be used to charge batteries for
> >> nights and dark days.JohnMW
> >> To: firstname.lastname@example.org
> >> From: traveler.in.thyme@
> >> Date: Wed, 2 Mar 2011 13:59:36 +0000
> >> Subject: [pfaf] Re: overwintering tomatoes in greenhouse