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KevinH

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Reply with quote  #181 
I used 3 inch flexible aluminum duct in my last collectors.
http://simplysolar.supporttopics.com/post/kevin-h-tube-collectors-7130284?&trail=10
It works OK.  Just be careful when stretching it out.

For 12x3 you would want to run the tubes in parallel with plenums at each end.

No opinion on push/pull.  My fans are in the middle of the U-shaped air path so they are a combination of push and pull.

Kevin H
MN

Dieseldave

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Posts: 5
Reply with quote  #182 
My thought was to use 3 or 4 inch flexible aluminum thin foil ducting
SolarInterested

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Reply with quote  #183 
Quote:
Originally Posted by Dieseldave
I am new and kind of confused. I posted this question on a different place. Is this the place to post new questions?
Welcome Dave. This is fine for a few general questions. You may want to open a separate thread/topic if you'll be asking a lot questions about your planned collector. I've deleted the post where you first asked your question which was in a thread about thermostats.

SI
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Both temperature rise and airflow are integral to comparing hot air collectors
Dieseldave

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Reply with quote  #184 
How do I open a new thread / topic
SolarInterested

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Reply with quote  #185 
Quote:
Originally Posted by Dieseldave
How do I open a new thread / topic


Go to the appropriate forum (for your collector probably 'Solar Hot Air Collectors') and click on the 'New Topic' button at the upper right corner.

NewTopic.jpg 
If you like I can move these existing posts over for you?

SI


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Both temperature rise and airflow are integral to comparing hot air collectors
myk3y

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Posts: 31
Reply with quote  #186 
Thanks for the great forum!

I've been researching solar heating - both air and water - for some time and found the various members videos on youtube and instructional web pages invaluable.

Thank you for the time spent to instruct us novices! 😉

About me/us: Currently living on the equator, so heating isn't really a problem - getting rid of heat is! But, moving back to NZ after 20 years and we are looking to design a passive-=solar house, with active PV power and the ability to DIY all my heating needs is definitely a plus.

Thankfully we in NZ are blessed with abundant sunshine and moderate winter temps, so no need to worry about frozen pipes, snow, etc. The area we are moving to has the same latitude as central California - about 37.5deg S/N - with high sunshine hours, low rainfall and at sea-level, only about 5-10 days of frost a year, so solar is a perfect solution for heating.

And, as heating takes about 60% of most people's power bill, a big saving in living costs.

However, being a small country with a small population at the far reaches of transport links (We aren't on the edge of the world, but if you stand on a stool you can see it on a fine day!) things that are cheap in the US and Europe can be expensive down under.

This goes for solar heating and hot air systems especially. Our government hasn't cottoned-on to the idea of subsidising solar, so theres no tax rebates, or other cost-reducing systems in place and the electricity co's are extremely tight with payment for generation back to the grid, so anything we can do to alleviate costs is a smart idea.

Looking forward to getting to grips with the various types of installation and grateful for all the hard work already done by the members here. Nothing worse than reinventing the wheel 😉

Cheers,

Mike
SolarInterested

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Reply with quote  #187 
The rather large number of posts related to 'Solarguy2018' have been moved to a separate thread

http://simplysolar.supporttopics.com/post?id=9925358

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Both temperature rise and airflow are integral to comparing hot air collectors
SolarInterested

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Reply with quote  #188 
Hi Walter I'm SI the moderator here. This discussion has grown quite large and should probably be moved into it's own thread in the Member Projects section. Let me know what you'd like to title it and I'll take care of the rest.

Mike

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Both temperature rise and airflow are integral to comparing hot air collectors
walter matthews

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Reply with quote  #189 
How about if I get really clever and call it "Solar Hot Tub Project" 
SolarInterested

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Reply with quote  #190 
It is done [smile] Walter's "Solar Hot Tub Project" thread can be found here
 http://simplysolar.supporttopics.com/post?id=9960804

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Both temperature rise and airflow are integral to comparing hot air collectors
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