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DIY Solar Collectors: Upgraded Build & Testing w/ Real World Use

85K views · Jul 12, 2026 · Education

Comments · 651

  • @user-nu2pj2ch7t · 2 months ago

    such a gem on youtube. i learn so much from your content and genuinely appreciate your scientific method approach to determining effectiveness

    98

  • @MrDustin713 · 2 months ago

    If I can please make one request for a sand battery bank project for thermal heat storage/use! I think it would integrate very well with your current projects.  Love the video's man, keep them coming!

    55

  • @SeekingBeautifulDesign · 2 months ago (edited)

    I&apos;m sure someone else will mention this but ...<br>Scandinavian Drying Closet: &nbsp;Hang wet clothes in box through which hot dry air passes with low speed fan. &nbsp;Clothes dry, but aren&apos;t degraded at the rate imposed by tumble dryers. &nbsp;Box is cheaper and more reliable than dryer, tumble mechanism and control electronics. &nbsp;Dryer does dry more quickly. &nbsp;<br><br>Drying closet requires no control electronics as passing warm air over already dried clothes doesn&apos;t degrade closet, fans or use much extra electricity. &nbsp;Both lower temperature air with higher volume or higher temperature with lower volume both work. &nbsp;Basically just run fan so that max temperature never occurs. <br><br>If 5W fan is used as per video, drying closet saves 150W electricity for the tumble motor.<br><br>So, the final test here wasn&apos;t really about follow on efficiency after the collector, but since we&apos;re already thinking about the concept of efficiency...

    58

  • @mauriceupp9381 · 1 month ago

    The bug screen is not what&apos;s gathering the heat up in your box.It&apos;s the piece of metal that&apos;s fainted black.And in the case of the first one, it&apos;s the styrofoam that was fainted black

    6

  • @theamazinggonzo1 · 2 months ago (edited)

    Always excited for the latest greenhill video

    33

  • @utubeaccess7 · 2 months ago

    I really appreciate all of your hard work.

    36

  • @44MichaelBarrett44 · 2 months ago

    Solar water heating will be interesting.

    2

  • @niceguy191 · 2 months ago

    I&apos;m wondering if you could lay/loop the bug screen like ribbon candy so that the air flows through multiple &quot;baffles&quot; of the screen.

    21

  • @jakecorbin1998 · 2 months ago

    I&apos;d be interested how (one layer of) landscaping fabric compares to bug screen.

    12

  • @JakMang · 2 months ago

    Heat pump manufacturers should offer add on modules like these. The pump fan could pull air through the collector. Anywhere with winter sun would really benefit

    4

  • @RentableSocks · 2 months ago

    more bug screen layers please!

    40

  • @Cynthia_Cantrell · 2 weeks ago

    Excellent work! &nbsp;I&apos;d be tempted to add a humidity sensor to the dryer exhaust and wire it back to the Arduino. &nbsp;This would allow the controller to automatically turn off the dryer when your clothes are dry, saving even more money - or running it longer on cloudy days to make sure your clothes dry out. &nbsp;I suspect this means adding a power relay to the electronics, but that&apos;s not difficult.<br><br>I wish my health was still good enough to work on projects like this!

    1

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