Aluminum Downspout Hot Air Solar Collector Construction




What do you think about this video?

Johnsfavids: Thank You for posting this informative video.

Jason Corvallis:
Aluminum Downspout Hot Air Solar Collector

Jeff Demers: Very well put together video by an enthusiast. I'm already set on building one, and can't wait to get started!

Reggy Hidajat: Hi Scott, i have a question. Does this thing need to face the sun to get the heat from the sunlight? what if i make this solar collector in an apartment that does not face the sun? Will it work? thnkyu :)

Sandra: BTUH = 1.10 x CFM x Delta T = 3500 btuh / 3.41214 = 1000 watt or a 2/3 of an air dryer output.

John Godwin: Hi Scott.  This has me thinking about building one of these.  Do you have a Facebook page dedicated to this type info?

Captain Zeb: You could extend your evening run time by make a few changes. Ever walk on a beach late at night, feeling the warmth of the sand? Extend all dimensions by a minimum of four inches. Pack all sides between the insulation and heat collector plate with play sand. The heat in the sand will give you a few more hours of run time after the sun starts going down.

Darin Clune: I am building a Giant array with 12-14 downspouts spanning 20-25 feet. Would it be better the snake on each and or flow air through 6 or 7 of them one way and bend the one corner into the other 6 or 7 (Like what is shown in the video). Im wondering if it would be more efficient if it would go through them each individually, all snaked up rather then through them in one quick loop? 

Janelle Barbour: Hi Scott! Have a question for you. Have you ever giving the idea of using magnifying sheets to cover it with? You could generate 3x or more heat using the sheets and will also better generate heat on cloudier days and would be able to magnify light being reflected off the snow in those areas with high snow fall. Would also cut down on size of the unit if someone has a problem with space. You would also need to look more toward a metal frame and strong reflective backing to keep from starting a fire in the box. What do you think?

butch gardner: Scott,
Help. I can not find the DOW Super Tuff-R 4x8 Styrofoam 1" boards at any of the local name brand stores. I did find 1" ISO styrofoam boards at a local roofing supply company BUT it had a paper coating on BOTH sides of the board and the manufacturer of the board said that the paper coating was rated up to 250 degrees F. (What is the highest temperature you've observed inside any solar hot air collector?) I've built my 4'x8' hot air collector box and I have the downspouts cut and ready to install but following your guidelines I'm not sure about the insulation or how you secured the insulation to the box. Thank you for your time and any assistance you can provide.
Butch
Richmond, Va. 

West Virginia Patriot: New subscriber Great Video Scott!

Ralph Marlow: After looking at lowes the price for aluminum downspout in my area is $50 for a ten foot section. Wish I had invested in a bunch of that stuff when the price was 5 times less.

Paul Ladendorf: Hi Scott. Great design and video. My concern with this system is with pressured treated wood and painted downspouts in a unit that is getting up to 150 degrees, I wonder about off gassing of chemicals and air quality. Have you considered that?

kricotas: very nice!!!

Jason Hurtado Daniels:
Aluminum Downspout Hot Air Solar Collector Construction

#energy

Jason Hurtado Daniels:
Aluminum Downspout Hot Air Solar Collector Construction

#energy  

john doe: I noticed that your inlet heat is 58 degrees from 9am to 3pm...that tells me your heater aint working! If your heater was working wouldn't the inlet heat rise?

WSPSkydiver: Job well done! It's seems to be a very nice design.

Assuming you're still using this (almost 4 years based on posted video date), have you noticed a cost savings in heating your home? I'd like to start a project like this, but I'd like some information on long term usage from you serious DIY builders. Thanks!

JazzTree78: Awesome.  Both Projects.
Scott really did a good job of insulating the frames and even the pipes in the ground.  Also, the flashing on the inside.  His fans look like they may be 12 volt and thus solar powered, which would be the ultimate free heat.
The damper is crucial too.  Once the sun is gone, these turn into heat extractors instead of heat producers.  I like how you've got it heating the basement, which heats the floor and the heat just migrates gently upwards.

felibr adone: Nice project, but do NOT use plastic with heat. Very canceriginous.

Rating:
Aluminum Downspout Hot Air Solar Collector Construction 5 out of 5

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