market-farming AT lists.ibiblio.org
Subject: Market Farming
List archive
- From: John Ehrlich <johnkaty AT shaw.ca>
- To: Market Farming <market-farming AT lists.ibiblio.org>
- Subject: Re: [Market-farming] Greenhouse heating
- Date: Tue, 8 Feb 2011 06:33:25 -0800
Couldnt you cover some of the sensitive crops on colder nights to avoid
freezing?
The on demand outdoor propane furnace is 1500 in Ontario.
It is about 1000 for a forced air propane unit, but the efficiency is less, I
assume.
On 2011-02-08, at 6:24 AM, sunnfarm AT netscape.com wrote:
> A professionally designed system the water temp going in will be the same
> coming out. The whole idea of bottom heat is temperature uniformity. On my
> bench top system the in and out temps hold at 120 degrees. Remember your
> not creating one big loop but many small loops from a common manifold...
> Bob.
>
> --- thamnophis AT gmail.com wrote:
>
> From: Thamnophis <thamnophis AT gmail.com>
> To: Market Farming <market-farming AT lists.ibiblio.org>
> Subject: Re: [Market-farming] Greenhouse heating
> Date: Mon, 7 Feb 2011 23:50:18 -0600
>
> If the water was 140F going in, how log was the tube and and what was
> the water temp coming out?
>
> Did you pack the sand in tight? (less air space would equal less
> insulation [dead air space] and more heat absorption into the sand)
>
> (I'm curious because I'm thinking of setting up something similar and
> realize there is a lot of math involved!)
>
> Joe
>
>
> On 2/4/11, Jason Bomkamp <grt4kids AT hughes.net> wrote:
>> I experimented with in floor heat this past fall. I used 1/2 inch pex
>> tubing at 10" spacing throughout the floor. I had 2" polystyrene
>> under it and 6" of sand over that. My water temp was around 140
>> degrees. My results were very disappointing though. My tomatoes
>> froze last fall when it got down to around 20 outside, I was hoping
>> for better results. If someone knows some tricks to this I'm all ears.
>> _______________________________________________
>> Market-farming mailing list
>> Market-farming AT lists.ibiblio.org
>> http://lists.ibiblio.org/mailman/listinfo/market-farming
>>
>> Market Farming List Archives may be found here:
>> https://lists.ibiblio.org/sympa/arc/market-farming/
>> Unsubscribe from the list here (you will need to login in with your email
>> address and password):
>> http://lists.ibiblio.org/mailman/options/market-farming
>>
> _______________________________________________
> Market-farming mailing list
> Market-farming AT lists.ibiblio.org
> http://lists.ibiblio.org/mailman/listinfo/market-farming
>
> Market Farming List Archives may be found here:
> https://lists.ibiblio.org/sympa/arc/market-farming/
> Unsubscribe from the list here (you will need to login in with your email
> address and password):
> http://lists.ibiblio.org/mailman/options/market-farming
>
>
>
>
> _____________________________________________________________
> Netscape. Just the Net You Need.
> _______________________________________________
> Market-farming mailing list
> Market-farming AT lists.ibiblio.org
> http://lists.ibiblio.org/mailman/listinfo/market-farming
>
> Market Farming List Archives may be found here:
> https://lists.ibiblio.org/sympa/arc/market-farming/
> Unsubscribe from the list here (you will need to login in with your email
> address and password):
> http://lists.ibiblio.org/mailman/options/market-farming
-
[Market-farming] Greenhouse heating,
Jason Bomkamp, 02/04/2011
- Re: [Market-farming] Greenhouse heating, MAsteveINE, 02/07/2011
- Re: [Market-farming] Greenhouse heating, Thamnophis, 02/08/2011
- <Possible follow-up(s)>
-
Re: [Market-farming] Greenhouse heating,
sunnfarm, 02/08/2011
- Re: [Market-farming] Greenhouse heating, John Ehrlich, 02/08/2011
- Re: [Market-farming] Greenhouse heating, John Shong, 02/08/2011
-
Re: [Market-farming] Greenhouse heating,
John Shong, 02/08/2011
- Re: [Market-farming] Greenhouse heating, Lova Andriamanjay, 02/15/2011
-
[Market-farming] Greenhouse heating,
Jason Bomkamp, 02/08/2011
-
Re: [Market-farming] Greenhouse heating,
maury sheets, 02/08/2011
- Re: [Market-farming] Greenhouse heating, Thamnophis, 02/08/2011
- Re: [Market-farming] Greenhouse heating, MAsteveINE, 02/09/2011
-
Re: [Market-farming] Greenhouse heating,
maury sheets, 02/08/2011
- [Market-farming] Greenhouse Heating, John Shong, 02/16/2011
- Re: [Market-farming] Greenhouse Heating, sunnfarm, 02/16/2011
Archive powered by MHonArc 2.6.24.