Joel Fairstein-
My worldview!
03/15/2016 at 14:01 • 0 commentsRespect the earth and one another.
This user joined on 10/31/2015.
My Pages
Things I've Built
Automatic fresh air vent
Put this in a sash window, and when your attic fan goes on, the vent will open from negative air pressure allowing cooler outside air into your home. Two temp sensors and a PICAXE control the attic fan appropriately. Saves lots of energy!
Electric lawnmower
Using electric scooter motors and a drive chain makes this mower noisy but effective.
Concentrating solar building (prototype)
A stationary curved roof mirror and non-imaging tracker would provide thermal energy to heat and cool a building. There is very little energy lost to transmission, since the energy is used onsite. Projected 44% efficient.
Skyheater
A solar air heater for commercial building rooftops. Measured 85% efficiency in the dead of winter atop World Clutch building in Knoxville, TN.
Lutetium
David Davenne
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