CEAC-2020-10-October

EndoTherm and How It Works
We also spoke with Gehrke himself to discuss the program
and the product, and how the WETSS program can help bring
savings to those who employ closed-loop heating systems at their
buildings. And of course, he had a lot to say. “This is a product
that came over from Europe,” he explains. “It allows the heat
transfer into the water and into the air exchange to be more efficient
by taking every little crevice of the piping — what they call
the heat-transfer surface — and making it available to transfer
heat. At a microscopic level, those surfaces are very rough at
best, so those all get touched in. Those potholes or corrosion —
they’re all filled in with water. Then the transfer takes hold. Now,
once that transfer is more efficient, when you go back to your
boiler, say your boiler fires seven times an hour to maintain your
heat. This, then, turns around and reduces that seven times an
hour of firing, say, down to five times an hour firing. And since
you’re not firing it for those two other times, your flue gas, or
stack gas, or however you want to define them, are not happening,
or are not wasted. So, when you start adding that up over a
day, over an hour, or over a year, you start to have some significant
savings.”
Better still, when introduced into a hydronic system, Endo-
Therm does not interfere with other additives that may already
be in place. “Endotherm works with, and is incompatible with
all of the corrosion inhibitors that we would put into the water,”
Gehrke asserts. “Everything from silica, molybdenum, nitrite,
even chromates —but nobody uses chromates anymore; I’m dating
myself now — but all of the basics that we would put in for
corrosion. A little caustic, a little tolyltriazole, or BTA or MTA;
those are all azoles for copper corrosion — it does not interfere
with any of those. And it does not interfere with ethylene glycol
or propylene glycol, which has all been tested out.”
(Continued on page 40)
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