1. Welcome Hearth.com Guests and Visitors - Please enjoy our forums!
    Hearth.com GOLD Sponsors who help bring the site content to you:
    Hearthstone Soapstone and Cast-Iron stoves( Wood, Gas or Pellet Stoves and Inserts)

Solar heat box

Post in 'The Green Room' started by Billy123, Mar 19, 2011.

  1. Slow1

    Slow1 Minister of Fire

    Nov 26, 2008
    Eastern MA
    One thing that confuses me on these collectors - I see that folks put the fans pulling the hot air out of them. Yet we often preach that it is "better to push cold air to the stove". It would seem to me that perhaps some of the same logic may apply in terms of being easier to push dense cold air into the collectors than to pull the 'thinner' warm air out. Can anyone explain the logic here? Is there any particular logic one way or the other?

    Helpful Sponsor Ads!

  2. woodgeek

    woodgeek Minister of Fire

    Jan 27, 2008
    SE PA
    I think for a closed system like these air collectors, it shouldn't matter (except the fan will run hotter). I think the main reason why blowing the cold air to the stove makes so much sense is simply that 99% of the time fans go on or near the floor, where the natural cold air return is flowing anyway. If we put similar fans blowing sideways on our ceilings, I bet we would find that they work well blowing away from the stove. Of course, those little doorway fans come to mind, but I always thought most of them were far too small to be worth messing with.
  3. karl

    karl Minister of Fire

    Apr 9, 2007
    Huntington, West Virginia
    Has anybody built a large one or a serious of small ones and posted a website about them? I'm talking a hundred square feet of collector or more. Maybe even placed on a roof.
  4. fishingpol

    fishingpol Minister of Fire

    Jul 13, 2010
    Merrimack Valley, MA
    check out builditsolar.com

Share This Page