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re: starting with a blank slate - what would you do differently?
3 sep 2005
ecnerwal wrote:
>heat recovery is in the plan with the liquid cooled diesel genset...
liquid cooled is nice for cogen. intelligen also added a stacked plate
exhaust gas heat exchanger about the size of a softball to their 11 hp
lister-petter diesel.
>i do have a scheme to collect exhaust heat, but it centers on a
>scrounged weil-mclain oil-fired steam boiler (which might be convertible
>to hot water) - i figure if i feed the diesel exhaust in instead of the
>oil gun, it should be a pretty competent heat exchanger...
sounds interesting.
>my only nagging concern is some notation about keeping it above 120f to
>ward off "low temperature corrosion"...
perhaps you can find a way to keep it 120 f or below, for condensation
without corrosion. intelligen's final particulate filter was
a 55 gallon drum.
>nick has tossed in some random idiocy with some sensible stuff. i'll
>address the idiocy first: if i put all the cash in pvs, then i don't
>have any of the rest of the system - useless.
can you say "humor"? :-) pvs are hideously expensive...
>if i hang a wind generator in a tree, it's still in the wind shadow
>of all the other trees - and the fact that the trees grow straight up
>is indicative of the low wind potential of the site. to get above the
>trees and tree turbulence would take about a 150 foot tower (minimum)...
or fewer trees, at least upwind. then again, if there's little wind...
>air and water heaters on south wall are in process...
nice.
>and it also has 6 great big honking windows...
more expensive and much less efficient on cloudy days than air heaters,
eg "solar siding," eg 4'x12' sheets of $1/ft^2 dynaglas clear corrugated
polycarbonate greenhouse roofing 6" away from a dark metal shop wall.
ceiling mass can store sunspace heat, as in the italian barra system.
>the main shop floor has an 11.5 foot ceiling;
a white ceiling with clerestory windows with lightshelves (reflective above)
above eye level could move lots of natural light deep into the shop...
good luck :-)
nick
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