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Comment by Rob Torcellini on October 14, 2011 at 4:51am

Thanks for all the feedback.  I was very scientific about the entire thermal mass...I guessed.  ;-)  Basically I decided to insulate the 4' wall and bury the pipe about 1/2 way down.  I figured it would help to minimize the head leakage down and maximize the storage area.  I honestly have no idea if it will be enough mass but I figured I might as well invest the few hundred dollars to put it in while there was still a hole there!  Feel free to email me at rtorcellini (at) bigelowbrook (dot) com.

Comment by Terri Mikkola on October 13, 2011 at 10:37pm

This web site does a great job explaining  Subterranean Heating and Cooling Systems (SHCS). Here's the direct link to the SHCS calculator, a Num Sum spreadsheet. I created an excel version. Let me know if you would like a copy.

Comment by Two Jay on October 13, 2011 at 9:54pm

How did you calculate your thermal mass / air to air geothermal system?  I am working, physically, on mine this week.

 

Comment by Jim Gill on October 13, 2011 at 9:11pm

I would love to talk to you about the project we are in michigan and are building our thermal mass in a 35,000 sqft ware house.

Comment by Jonathan Farrand on October 13, 2011 at 6:38pm

Machines are nice for sure!!!