Posted by Mike P on October 30, 2003, 3:50 pm
Would you explain this concept of a pressurized tank inside of a
non-pressurized tank to me? I don't understand how that works.
Posted by nicksanspam on October 30, 2003, 4:48 pm
It's easier to build a large UNpressurized tank than a pressurized one for
heat storage, because it doesn't have to be as strong. Then put a bare
galvanized tank inside the unpressurized one to act as a heat exchanger to
heat potable water for showers and so on. Cold tap water flows into the
small tank at about 40 psi and flows out hotter, into the cold water inlet of
a conventional water heater or directly into showers and hot water spigots.
Harry Thomason heated water this way in hundreds of houses. A single wall heat
exchanger may not be legal under today's plumbing codes. The perceived danger
is that the small tank may have a pinhole, and a fire engine may depressurize
a whole town water supply by pumping water out of a hydrant, sucking non-
potable water from your house into the public water supply. These days, many
new houses have backflow preventers (check valves on the water supply lines.)
A $00 "reduced pressure zone valve" that drains the pipes in a house to
a sump when supply pressure drops may be the next step up in safety.
Posted by Alec Chiasson on November 2, 2003, 11:02 am
I've lurked amongst this newsgroup for over an hour now, so forgive me for
question(s) which may have been answered many times before. I did a search
Harry Thomason on Google and came up with one, though I didn't check them
all, on this
very subject, and noticed David Delaney's name ( also a contributor here, is
he not? )
in the site address:
Outside of the link to the PDF file on the border guard facility in Vermont
( Nick Pine, et al )
could anyone please forward information on texts/papers/websites etc.
relating to Dr. Thomason,
and if so, would they please do so? =]
I am assuming this is not the Harry Thomason who produced, wrote and or
directed such abominations as
television's Designing Women ( wonder if they ever did an episode on solar
designs? ), Emeril ( BAM!...
Thunk... ), The Fall Guy ( William Shatner's Star-Trek-movie-hairpiece comes
to mind for some
reason ), or movies like The Day It Came To Earth, and Revenge of Bigfoot
( hey, I do my research... ).
All due respect to the late Dr. Thomason, and thank you for any replies.
Posted by Nick Pine on November 2, 2003, 2:11 pm
You might try the Solar Today web site. If all else fails, I made a CD
containing all of his solar patents and most of his publications.
Posted by Alec Chiasson on November 2, 2003, 10:52 pm
After searching the Patent Office website I found 8 patent numbers, and the
cost of downloading them in PDF format was $7. Here are the patent numbers
Nick, if you could post again with an approximate number of documents
included on the CD and it's cost ( with shipping if handy...Canada ) I'd be
much obliged, thanks.