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Old 03-20-19, 03:24 PM   #561
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Originally Posted by DerekG View Post
What's the worst thing that can happen if some water gets trapped in there?
  • The filters and/or ventilation motors may get wet.
  • Excessive moisture may lead to mold.
  • Enough water can start to clog some of the passages, both reducing efficiency and increasing risk of mold.
  • In certain situations the water may freeze.

Ecorenovation - the bottomless piggy bank that tries to tame the energy hog.
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Old 09-17-19, 09:11 AM   #562
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Greetings! Just found your forum and your thread while googling I also want to build a recuperator. I am thinking of buying 1000x2000x1mm aluminium sheets, cutting them into 200x200 squares and then gluing the squares with silicon, maybe, or putting window sealing D type rubber bands and screwing them together; if silicon, then also some hard material to separate the sheets (silicon is liquid after all). I would like a counterflow, so I am thinking about building two of such cassettes. Al sheets are not a problem-non anodized one costs some 20eur, anodized one some 23eur. Now here are my questions:
1.what should be the gap between the sheets? Corrugated plastic holes you are using are some 5mm, so maybe I should plan the same?
2.what could be the heat power transfer (watts) of one such cassette and what could be the air speed (m/s) for good results?
3.should I build some fins or other things in my gaps inside cassettes to generate some turbulence? Or maybe build some forms (like 5mm high semisphere) from wood and with help of them and hammer bend some depressions into aluminium? Turbulent flow could collect more heat from surface than laminar one, right?
For answering my questions-a bonus idea. I dont want to drill any walls, but I came across an idea-balcony door would open, making some 10cm gap at the side, the gaps at the top and bottom would be covered by "slice of pie" semicircle plastic, the side gap would face some plastic sheets with two holes and holes would be connected to my recuperator (air in, air out). I open balcony 10cm->there isnt a lot of cold air leaking in->the outside air interacts directly with my recuperator. You open door more-then its like simply opening the door
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Old 02-12-20, 05:32 PM   #563
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Video of my prototype.

Design and build

Performance test results

I was blocked from directly posting links .. remove the "---" used above to fool the bot.
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Old 02-12-20, 11:02 PM   #564
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Originally Posted by IamIan View Post
Video of my prototype.

Design and build

Performance test results

I was blocked from directly posting links .. remove the "---" used above to fool the bot.
I thought I'd let you know that you have to make a few more posts before you can share links.

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erv, heat recovery, hrv

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