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Scott Davis

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Reply with quote  #21 
Hi Lawrence,

For an aluminum downspout collector, you will need:

Glazing (SunTuf at Home Depot or Tuftex at lowes)

Downspouts (Any hardware store)

Polyisocyanurate (or polyiso for short) insulation.  Sold under the brand name Super Tuff - R at both Home Depot and Lowes locally:  http://building.dow.com/na/en/products/insulation/supertuffr.htm 

Wood for framing

Caulk

Screws


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stanley122908

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Reply with quote  #22 
Quote:
Originally Posted by Scott Davis
Hi Lawrence,

For an aluminum downspout collector, you will need:

Glazing (SunTuf at Home Depot or Tuftex at lowes)

Downspouts (Any hardware store)

Polyisocyanurate (or polyiso for short) insulation.  Sold under the brand name Super Tuff - R at both Home Depot and Lowes locally:  http://building.dow.com/na/en/products/insulation/supertuffr.htm 

Wood for framing

Caulk

Screws



Im new to this idea and very intrigued.  Im checking on materials and the Tuftex from Lowes says that its 100% uv protected...does that matter?

My house is on a crawl...old Michigan stinky crawl!  I dont want to pull the air for the system from there...can I use the air from the house?

thanks
Scott Davis

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Reply with quote  #23 
Hi Stanley,

100% UV protection is good.  It protects anything you put in your collector, as well as the glazing itself, from the sun's deteriorating rays.  Both Suntuf and Tuftex are UV protected.

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solardan1959

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Reply with quote  #24 
Stanley,
   For your second question, yes, it is actually better to use the inside air.
   What's a crawl, a quick google search came up with nothing other than the standard crawl like in Pub Crawl.  Though that sounds like much more fun than your...
Quote:
old Michigan stinky crawl!

Dan
Bruce L

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Reply with quote  #25 
First time posting.  I have always been interested in this stuff.  I am doing some solar now.  My workshop has south facing overhead doors which I turned into big windows and the doors act as moveable insulation.  I also have a grid tied solar panel array.  But I want to do more and I am interested in these downspout air heaters.   My question is from a design standpoint, what length of down spout in the collector will be most efficient?   For example, will you capture more heat with a single 40 foot run, or 2 parallel 20 foot runs?
Scott Davis

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Reply with quote  #26 
Hi Bruce,

You will have less pressure drop (flow resistance) with two, 20 foot parallel runs, so go in that direction if you can.

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ChrisJ

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Reply with quote  #27 
Dan,
I believe he's talking about a crawl space under the house, dirt, humidity, stinky...

Chris
stanley122908

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Reply with quote  #28 
Quote:
Originally Posted by solardan1959
Stanley,
   For your second question, yes, it is actually better to use the inside air.
   What's a crawl, a quick google search came up with nothing other than the standard crawl like in Pub Crawl.  Though that sounds like much more fun than your...
Quote:
old Michigan stinky crawl!

Dan


Yes, the crawl space underneath my home (which is exactly that) only enough room to crawl around.  I have much work to do down there but still dont think that pulling air from the space into my home sounds like a good idea.

I am looking for a way to pull the colder air from the rear of my house toward the south (where i plan to put my solar panels).  

How long of a run is too long?  Im guessing that it all depends on the fan that I use?  The more power the fan...the longer the run can be?

I am new to the whole idea and want to do as much research as I can before beginning construction.

Any suggestions would be greatly appreciated!!
stanley122908

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Reply with quote  #29 
Quote:
Originally Posted by ChrisJ
Dan,
I believe he's talking about a crawl space under the house, dirt, humidity, stinky...

Chris


EXACTLY!!
rosweed

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Reply with quote  #30 
Hi, I just came across all this great information. Thank you all for doing this.

I have never built anything like this before, but the setup in Scott's video would work perfectly in my situation. Is there a set of plans for this? Or a parts list that I could work with? And what exactly is a snap switch? Sorry if these are dumb, newbie questions.

Shawn
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