By: 4tees On: Wed Nov 11, 2009 9:15 am
What I do not understand is why there seems to be NO effort whatsoever in reasearch and development of Solar Thermal technologies? Most likely it is not complicated enough. After all isn't this the basis for heating the earth?
Why doesn't every roof in America have a solar water heating system? Simple designs...collector, antifreeze solution, few pumps, heat exchanger, few thermostats.
What about solar thermal air heaters? Simple designs...collector(hollow box), air, few fans, heat storage (water filled drums, rock bins), few thermostats.
I built a 4'x8' collector with $100 in materials that pumps out 140 degree air in the middle of the winter to heat my office running only a tiny fan. I can't believe the experts could not do this on a larger scale and make it able to be retrofitted on most homes or businesses.
Why not a federal tax credit to add a sunspace on the south side of your home with a few fans to pump warm air into the home during the day in the winter?
Use oil for the portable applications....transportation.