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brazed plate heat exchangers for solar hot water heating

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Posted by grasshopper on December 27, 2009, 3:25 am
looks like compact heat exchangers are gaining more and more
popularity. any recommendations about choosing a manufacturer? how
about Brazetek brazed plate heat exchangers manufacturer? http://www.brazetek.com

Posted by zoe_lithoi on February 23, 2010, 3:41 am

How about used carborators from the junk yard?


Posted by Jean Marc on February 23, 2010, 7:16 am

/How about used carborators from the junk yard?


You mean carburators ?
I do not see how they can be used as heat exchangers. A heat exchanger
offers a large area to the working fluids...

Posted by zoe_lithoi on February 24, 2010, 3:40 am
 On Feb 22, 11:16pm, "Jean Marc" <jean-marc.brun> wrote:

Nope, I meant radiator!!!!


A radiator is a water to air heat exchanger!  It has lots of small
tubes with fins, i.e. it has lots of surface area.

Perhaps the original poster was referring to a liquid to liquid heat

If so, you submerge a radiator in a 55 gallon drum of liquid and run 2
hoses to the radiator..

You can see some discussions on it here:


Posted by phorbin on February 24, 2010, 12:27 pm
 marc.brun> says...

zoe_lithoi meant radiators.

...and zoe, it looks like a good, recycling idea but car radiators are
designed to transfer heat to air and what's under discussion is fluid to
fluid heat exchange.

You could jerry-rig a way to create a fluid to fluid heat exchange with
car radiators and get the job done but it wouldn't be as tidy as a unit
specific to the task.

That said, cheap is cheap.

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