CBFalconer said:
Great. Does that mean you survived the Reagan extermination of
solar? Are you into power generation at all, or just heating.
I designed and built my first solar collector in 1973; but during
most of the Reagan years I was too busy traveling and writing
firmware for new product development to do much building.
Later (in the 1980's) I solar-heated my rural Minnesota home
(with an LPG [liquified petroleum gas] stove backup) but couldn't
afford an adequate wind generation system. At that time the
CDC/Jacobs wind generator, installed, cost about US$20K, with
significant add-on for batteries, inverter, transfer switch, etc.
My present location has enough year-round wind to provide
electrical power; but is located in an aircraft hanger - and
absolutely no one would look kindly on my installing a generator
in close proximity to the airport's flight pattern. I did spot a
pair of (used) Danish megawatt wind generators for sale on the
web for $18K each; and if I move the shop I'll definitely
re-visit the wind power option.
The current panels are designed to provide a maximum discharge
temperature of 175ºF. They're mounted vertically to produce a
minimum of heat at summer solstice (think critical angle) and
maximum heat at winter solstice. Snow on the ground boosts
performance significantly by reflecting additional energy into
the heat exchanger.
I'm not really an alternative energy fanatic; but I am /very/
interested in the possibilities. There are situations where solar
heating is reasonable and others where it isn't. This fall Iowans
were warned that heating costs might double or even triple this
winter - and it seemed like a good time to prepare to make these
collectors available to farmers - most of whom use either #2
diesel fuel or LPG for heating - and many of whom would simply
not be able to pay the triple price.
After a career of (mostly) developing high-tech control systems
for others, I'm having a lot of fun building a self-regulating,
no moving parts, low-technology (if you're willing to ignore the
thermodynamics, heat-transfer, fluid dynamics, etc. efforts) product.
Actually, the most difficult and interesting part of the whole
project has been a global search for suppliers of the best/right
materials: special insulated glazing material from a Dutch
company, extruded aluminum from the US and Taiwan, stainless
steel hardware from China, and wood from Sweden, Thailand, and
the US. When I embarked on this project I never even suspected
that I'd be shipping stuff from all over the world to use in my
tiny factory.
BTW, finding good wood is much more of a problem than I'd
expected - and I suspect that globally we've seriously
over-harvested our trees.