Hybrid Car – More Fun with Less Gas

DMH design - Page 6

register ::  Login Password  :: Lost Password?
Posted by nicksanspam on May 22, 2006, 10:48 am
 


How about an 8'x8'x2' tall box on the lawn around a 6'-diameter x 2'-tall
EPDM-lined welded-wire fence tank with a 300'x1" pressurized plastic pipe
coil and a 2" polyiso board cover with EPDM over that and a fountain pump
that moves water up through a shallow draindown pond when the tank temp is
less than 130 F and the EPDM temp is greater than 130?

The pond could have a greenhouse polyethylene cover, with a approximately
parabolic reflective north wall made from foil-faced foamboard above that
and an 8'x12' single polycarb south wall.

On an average December day in Atlanta, with 1110 Btu/ft^2 on a south wall
and a 50 F daytime temp, this might collect 8'x12'x0.81x1110 = 86K Btu
and lose 6h(130-50)8'x8'/R1 = 31K, for a net gain of 49K Btu.

Nick


This Thread
Bookmark this thread:
 
 
 
 
 
 
  •  
  • Subject
  • Author
  • Date
| `--> Re: DMH design Duane C. Johnso...05-20-2006
please rate this thread