Cipherin', whether coined or not, was made famous by Jethro Bodine. I use it as slang defining mathematical complexity, it' just below figurin'.
To loosely quote Jed;
"If brains was lard, Jethro couldn't grease a pan."
R is a measure of insulation. The higher the number, the more insulation value. One foot of stone is roughly equivalent to 3/4 inch of plywood.
Collecting the energy of the sun using thermal mass is a valid theory, but you may be overlooking the size/thickness blanket that you need to hold it. Even at five hours of sunshine, at that latitude the energy is incredibly reduced by the angle of incidence and it's worse when you need it most.
Bookmarks