|Geothermal 2016 - X is about where the stump is now|
The pipe that goes underground goes up to the top of the greenhouse so the air that is pulled in is probably 4-7 degrees warmer than what my temperature gauge shows. I put my hand at the exhaust end of the pipe to feel the air coming out after about 1/3 hour. It was clearly cooler than the air in the greenhouse. Eddy had told me that the soil warms a fair amount more at the intake end of the pipes and heats less at the other end, which makes sense, so I have the intake end at the stump end of the plant.
At 4:30 today I shut the fan down and took the soil temperature again at the same spot that I took the temperature earlier. I was pleasantly surprised. When I started the soil was 68 degrees. When I stopped it 5 hours later it was 80 degrees. Not bad. That is actually more warming than I would have supposed. This will be particularly nice in the early parts of future seasons when the soil is cold.
In other news, I'll be pollinating both plants tomorrow. Both at about 14-15ish feet. My thought is to cross the 2005 and 2255 together. Then depending on what pollen is available to possibly sibb cross the 2255 or cross with the 282, but I haven't checked to see what males I have available. More on that tomorrow.