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stmbtwle

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Reply with quote  #31 
You can get stud track in 6" and 8" widths (maybe wider) though it may be special order.

http://www.menards.com/main/building-materials/metal-framing/clarkdietrich-8-x-10-x-1-1-4-structural-20-gauge-metal-track/p-1444426598638-c-5695.htm?tid=6673004359908958994


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Solar is like the wind. It may be free, but putting it to work isn't!
Willie, Tampa Bay

gbwillson

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Reply with quote  #32 
Willie-

You can get wider stud track, but you will need to order a minimum of 10 sections, which would make for either a very large collector or leave you with a lot of leftovers. Anyone want to help me build a 10'x40' collector? [biggrin]

I've been thinking about stopping by the local neighborhood airport to offer my services. Lots of airplane hangers could use a solar air heater. 

Greg in MN
stmbtwle

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Reply with quote  #33 
Not in Minnesota [frown] brrrr!
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Solar is like the wind. It may be free, but putting it to work isn't!
Willie, Tampa Bay
Thor

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Reply with quote  #34 
Tamarack Materials Inc. in Bloomington.... they have LOTS of steel framing materials, I don't think they have any minimums... I could probably help build collectors [biggrin]  My employer was purchased by another and a few of us got downsized... waiting on approval with the states dislocated worker program.
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Minnesota!
Bert

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Reply with quote  #35 
The Menards here has 6" (5.5") track. They ship to the store free. That's what I was planning for my next collector.
For this one I already have the 3.5" which is fine. I like the look of it close to the road.
I will try and get the 1" spacing away the glazing. 
Does it matter how close I put the second screen to the insulation? If I have it 1/2" above, then I should be able to get that 1" from the glazing.
The glazing will be on top of the track and the rubber strip. That will give it a bit more. I may even be able to increase the gap 1/8" possible if I want.

Could put the insulation on the back of the track, but wouldn't like the look of it even with metal tape.




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Bert K.
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gbwillson

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Reply with quote  #36 
Bert-

I don't think it really matters exactly how far above the back of the collector you place the second screen layer, as long as there is room for the air to "breath". You can, in some cases use the exterior wall(In your case the garage wall) as the back of the collector itself, but that is if the exterior wall is insulated. While you could get away without removing the siding, it makes mounting and sealing between the wall and the collector troublesome.

Something to consider in your case is how it will look when finished. Too thick and it might not look right as decorative fascia for the house and garage. Just remember to keep it slightly elevated, as direct contact with the ground might not be the best thing for a metal track, or anything else metal for that matter. 

Greg in MN
KevinH

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Reply with quote  #37 
If extra space is needed for the insulation, Menards has 1-5/8" stud track.  It is a bit of a hassle to connect the two stud tracks (I used small bolts and silicone glue on mine).

Kevin H
Bert

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Reply with quote  #38 
Yes, I seen the 1-5/8" track. Don't think I will need it for this one. 
35 and rain today. [frown]  Hope the weather clear up soon. I would like to get started on this. I may have to partially build this in the garage and then mount the frame on the garage in two pieces or more.  Pretty long. I have it string-lined.
The garage is wood so I will just go over it. I'm going to seal the cracks between the  wood and collector though to keep the wind from whistling through.


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Bert K.
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Bert

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Reply with quote  #39 
What do you think about this spacing?

zp-new-spacing.jpg

Else I could make the screen spacing 1-1/8" and  have a 7/8" air gap at the top.  


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Bert K.
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gbwillson

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Reply with quote  #40 
Consider sealing the gap between the collector and the siding with a garage door bottom seal. They are thick, wide and would make a much neater seal than blobbing caulking to fill the gaps.

Is the South wall of the garage insulated? If so, I think ½" insulation(or none) on the wall behind the collector might be worth considering. If the garage wall is not insulated, a roll of insulation behind the collector is a cheap fix.  It could give you a lot more space to play with inside the collector box. 

In your ZP I would consider a slightly wider screen gap of 1¼" for a couple of reasons. One, your ZP is longer than others built so far. Two, you have at least one, possibly two long, winding duct runs. A 1" gap seems to work pretty good for a 16" ZP, but on your ZP it could act as a bottleneck. I think ½" between the back of the collector and the bottom screen is the minimum. And any extra space could be put in the screen gap and between the front screen and the glazing. If Krautman runs his gap tests before you finalize your spacing, great. But at least at this point plan for flexibility in your interior spacing.

Greg in MN

PS:For anyone considering stacking track sections: I wonder if a solid rubber gasket might be better than silicone or weatherstripping. The gasket would create a consistent gap between the two sections and the two sections could be screwed tight without squeezing out or smashing the silicone or weatherstripping. Not sure if this is cost effective, but it's still something to consider. 


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