[Cob] cob/earth oven also heating hot tub intake?

[tabitha and karl o'melay]

amanda
oh, i thought i might have a used pump for you--sorry, i never get 
manual pumps.

clint
i'm of the same opinion. but i don't think copper is the best solution 
since it can react with earth. i've been toying with the idea of pex. 
but the temperatures using pex must be really low <180 f. i haven't 
reached the perfect solution either.

there is something called "ward flex" used for natural gas and propane 
delivery which is made of stainless steel, extremely flexible and 
connects to US standard threads. but it is designed for low pressure 
gas. i need to test it under high pressure. pvc coating to be removed.

tys
i highly recommend investing in (30psi) low-pressure-relief-valves 
"t"ed at the feed & return of your heating coil.

-karl

On Dec 31, 2004, at 6:23 AM, Amanda Peck wrote:


Something on the order of a Guzzler (Bosworth Company).  But I haven't 
even checked to see if their diaphrams and plastic bodies will take 150 
or so degrees (F) water.  They might (bodies are delrin, so they 
probably will), and I expect that all I need to do is call them to find 
out.  (They are wonderful pumps by the way, even if I didn't learn 
until this summer that up to a point, the slower you pump the more 
water it moves)

http://www.thebosworthco.com/pumps_2.htm#material

Kuznetsov may be the guy who brought the masonry stove into the 20th 
(at least) century.  And I'd guess his ideas can be incorporated into 
your plans.  (the site does exist in English:  
http://www.stove.ru/index.php?lng=1  )

Right now a lot of us are fixated on the heated flue bench type of 
rocket stove.  The rocket stove is simpler.  It will also wear (burn) 
out sooner.  It may also be easier to clean (this point is definitely 
worth thinking about).

...................

Karl wrote (snipped):

amanda, what kind of pump are you looking for?

www.stove.ru has some interesting solutions regarding hydronic coils in 
masonry heaters similar enough to cob to nick his ideas i think?

k-)



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