[RE-wrenches] Solar for greenhouse root-zone heating

[Dana]

Joel,

 

We have done this with hot air into a gravel bed and Hydronic into concrete
slab and into the grow bed. All were designed around the root zone concept.

All work well and different installations for different existing conditions
and also getting in before the green space was built and having a boiler for
backup. The installations varied with the construction of the space: [2]
were all plastic double wall and [1] was  north, east, & west wall R-30
framed construction and south glazed. Elevations varied [2] were @
5000+FT.EL and one at 9500FT.EL. different of collectors were used. Lots of
variables and all have achieved the desired heating. 

 

I personally like the Flat plate-Hydronic with the boiler backup into the
slab or gravel bed method best.

 

If you want to discuss further, call tomorrow 8 - 5MST would be better.

 

Dana Orzel

 

Great Solar Works, Inc

www.solarwork.com

E - dana at solarwork.com

V - 970.626.5253

F - 970.626.4140

C - 970.209.4076

 

I will be the shift in how the world uses power! - Dana Orzel

 

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Joel
Davidson
Sent: Tuesday, November 10, 2009 12:36 PM
To: RE-wrenches
Subject: [RE-wrenches] Solar for greenhouse root-zone heating

 

Solar Thermal Wrenches,

 

My client wants to solar heat the soil in his 30 x 96 commercial greenhouse.
I found http://attra.ncat.org/attra-pub/PDF/ghrootzone.pdf but I do not know
if solar for root-zone heating is practical. I can not find a solar
equipment supplier. What do you think? Your solar thermal knowledge would be
most appreciated.

 

Thank you very much in advance.

Joel Davidson

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20091110/b4b98d85/attachment-0004.html>