Quote:
Originally Posted by Indyplumber
I have a question about storing the extra heat generated during the day. What is the best commonly available medium to use? I have a basement and crawl space to put something in but nothing large. Would a 4ftx4ftx4ft concrete block, very well insulated and buried in the ground, with PEX tubing running through it work? Can't really have a
1-2k gallon tank anywhere. I understand the efficiencies probably wont be good but I want to make a system as cheaply as possible using common materials.
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> What is the best commonly available medium to use?
Best can have many meanings.
You might want to find out what "specific heat" means, it might help you to answer your question.
-AC_Hacker