Posted by Sundug on May 9, 2007, 2:48 pm
On May 8, 12:33 pm, sylvan butler
All standard gas and electric water heater tanks are glass, sometimes
called stone, lined. Any way the tank wall is cut into will break this
thin, fragile glass liner, and there is no way to renew it. Forget
cutting into any standard water heater, and reusing it to hold
pressurized household water. Use an external heat exchanger, or run
tap water thru the collector, draining in winter. Doug
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SDHW and house-
DIY Solar Article can be found here:
Gallery of Solar Homes- second one down-
Posted by Mike on May 10, 2007, 12:23 pm
No they aren't. Stop generalising about your own country and its
practices being the same worldwide because it simply *isn't* true.
Go to some countries and close to 100% of the tanks fitted would be
Posted by Jeff on May 10, 2007, 1:27 pm
Well, the Op does appear to be from the UK.
What would be popular there? I can think of galvanized, stainless,
copper and aluminum. Except for the copper, those would be difficult (a
heliarc for the stainless for example) to cut open and repair. To go
through that much trouble it would seem that an unpressurized preheater
tank with a heat exchanger (length of copper tubing) would be more
practical and lend to greater storage.
Posted by Mike on May 11, 2007, 8:56 am
In the UK, with very few exceptions the tank *would* be copper. The
header tank being either an integral copper one, or if separate made
of galvanised steel or plastic. Aluminium is very rarely used in any
installation and stainless is only really used for unvented systems or
in instant water heaters where it may be glass lined.
Posted by Steve Spence on May 9, 2007, 12:00 pm
Look at http://www.butlersunsolutions.com/ solar wand, screws right into the
existing connection on top of the tank.