New consulting relationship with GreenTecAuto begins
What actually goes wrong with the batteries????
A look at todays Hybrid and EV battery packs
Battery packs exposed
Keeping Warm In New England
Control software
Storage and control
The Coal stove
The evacuated solar tubes
The wood stove
Plugging into the SUN
Making a small solar concentrator
Building MIMA and the plug in adapters
Converting a telephone truck to electric
DIY dual pulse Capacitor Discharge Spotwelder
Getting in shape while making electricity
Replacing gasoline with solar electric lawn equipment
What is Genesis One?
How to stop the aging process DIY
MIMA Install Day 2005 a Big Success!
Building a hybrid car grid charger
Tapping into the Wind
Expanding MIMA with the Distribution board ( users projects )

The evacuated solar tubes

The evacuated solar tubes
Solar system

After a lot of research, I decided to get some evacuated tube hot water collectors. These tubes allow short wave IR and visible light to pass through the outer pyrex glass, to be converted to long wave IR (heat) on the selective absorber inner glass. This heats the air in the tube, which has a heat pipe to transfer the heat to a manifold at the top, where it heats the circulating water.
I was impressed with how well it works. My 24" parabolic coffie pot will boil the water in less than 1/2 hour.
I built a stainless steel tubular frame for the tubes so the angle could be adjusted for different times of year.