Use the entire floor area to take advantage of the available thermal mass. Install vertical perimeter insulation to prevent heat migrating to the ground outside. A greenhouse that size requires around 45m of 4" tubing. Avoid using manifolds, they are costly, lossy and make it impossible to balance the airflow after installation :)
very beautiful work§ out of curiosity, if the temperature outside falls to minus 5 for a few hours in the morning (its the min i get where i'm at), what temperature do you have in the greenhouse with the GAHT battery?
Hi Regina, I used a calculation based on suggestion here (see link). The page also elaborates a little the theory behind. As I was reviewing many sources, they mostly repeat the same calculation method. improvemushroomcultivation.com/how-to-control-climate-in-greenhouses-with-an-earth-air-heat-exchanger/#_ftn11 [This formula is based on a tube length of 25 m. Metric system: #tubes = room volume / 50 + 1 with room volume in m³. Imperial system: #tubes = room volume / 1750 + 1 with room volume in ft³].
This is a great little project. You certainly deserve more thumbs up for this little gem.
Use the entire floor area to take advantage of the available thermal mass. Install vertical perimeter insulation to prevent heat migrating to the ground outside. A greenhouse that size requires around 45m of 4" tubing. Avoid using manifolds, they are costly, lossy and make it impossible to balance the airflow after installation :)
Wow, great work
Smart greenhouse ❤
Smart and beautiful!
It's so beautiful, but I still don't know what is this
A very quiet private space.
very beautiful work§
out of curiosity, if the temperature outside falls to minus 5 for a few hours in the morning (its the min i get where i'm at), what temperature do you have in the greenhouse with the GAHT battery?
That would be around +5C. It really depends on how well insulated your greenhous is.
Cool video! What is your garden zone?
zone 7a
Hi Tomas, did you use any source to calculate your needs for the underground pipes? My zone is 3, so just wondering how to calculate my needs. Thanks
Hi Regina, I used a calculation based on suggestion here (see link). The page also elaborates a little the theory behind. As I was reviewing many sources, they mostly repeat the same calculation method.
improvemushroomcultivation.com/how-to-control-climate-in-greenhouses-with-an-earth-air-heat-exchanger/#_ftn11
[This formula is based on a tube length of 25 m. Metric system: #tubes = room volume / 50 + 1 with room volume in m³. Imperial system: #tubes = room volume / 1750 + 1 with room volume in ft³].