Mike Does Weld Test on Coroplast...
Mike came across this patent on making coroplast HRV cores. and shortly after, Mike sent me his initial results of trying to weld coroplast (polyethylene)...
Quote:
Looks like you can weld coroplast just fine.
I used a soldering iron with the temperature dialed down.
Joints are plenty strong.
With a small backing plate to mash against, they'll probably be sufficiently pretty and not so disruptive
to air flow.
I was gonna make a tweezer-like heater, but doesn't look necessary.
Got the coroplast all cut. Thought I'd wait till I can open the door tomorrow
and not gas myself with plastic fumes.
Another thought...
What if I built two HRV's with only one fan each.
One fan blows out, the other blows in.
Put 'em in different rooms.
Set the blows out fan to 90% speed.
Dynamically adjust the fan speed on the other one to
make the net internal pressure zero.
Think that gets you about twice the air flow for the same
fan energy...depends on a tight house...and ventilation in two
rooms...and easier construction.
I think I know how to do the differential pressure measurement.
mike
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-AC_Hacker
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I'm not an HVAC technician. In fact, I'm barely even a hacker...
Last edited by AC_Hacker; 01-05-12 at 01:24 PM..
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