Hi there, new guy here, great thread, lots of great stuff, anyone working on anything at this time??
I've just acquired a number or sheets of 4mm corrugated plastic (sign material) and am about to start hacking it up and stacking an HX... I see that the cross-flow approach is really simple to build, and I also see a lot of reference to counter-flow... (as in two cross-flow HXs "configured in a counter-flow configuration" I'm having a hard time understanding how 2x cross-flow = counter-flow... but that's anothe thing...) so I 'm wondering how others might have approached configuring sign material in a manner that the opposing air streams are in true counter flow configuration as opposed to 90* angle to each other... Descriptions would be nice, but I'm a visual person so a diagram or picture is worth a million words for me... Any help would be appreciated!
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