DIY ventilation heat exchanger

[AC_Hacker]

Originally Posted by mackstann

I'm a little concerned about condensate draining. Creating a sloped pan in the bottom of the enclosure seems like it might be tricky, and how do you keep it from leaking air? A trap will only work during times that create enough condensation to keep the trap full. During spring and fall, the trap might dry out, and then what? Air would be leaking out the condensate tube. Maybe it's a small enough leak (though a small long tube with lots of airflow resistance) to not care.

I think you should be more than a little concerned, HRV condensation is a major issue here in PDX.

A previous PDX poster to the thread made a simple cross flow chloroplast rig that was about 2 feet long and about 6" x 6", using a computer fan. He had it tilted a bit, so that it was self-draining.

It dripped and drained a bit, but it dripped and drained constantly.

If you had a strategically rigged drain pan and a small plastic tube, it would self-drain and there would be minimum air leakage.

BTW, I like your series cross-flow idea.

-AC_Hacker