solar heat from pop cans...

[Guitartists]

The second link posted doesn't show a fan of any kind... so I am confused LOL Maybe you don;t need it, but it is more efficient that way? Yeah... I see the info now... reccomended

 

[HennysMom]

*laughing here* Yes. I read that - and its still not making sense to me - I can see the design and the question I have is still the same I asked before *sorry*

If the bottom of the cans, that are open - are now glued to that barrier, which is NOT OPEN or cut; the 2 or 3 inch hole is in the wood FRAME beneath that barrier - HOW does that clean air get INTO the cans then if they are glued to that barrier without any holes exposed??

The guy states the air is forced thru the bottom of the cans via that 2 inch air gap below that barrier - and not the top - so...explain how that air gets into those cans if the bottom is glued to that barrier w/out any drilled holes exposed in the cans (he doesnt state there are and they are def. glued down fully).

Get my question now? LOL

I get the concept - I just dont understand how he did it if the cans or at least one can - is not open on the bottom and he does not state that it is, only the frame is drilled.

 

[miss_jayne]

i have a possibly stupid question...CALLING JIM! PAGING MY FAVORITE HIPPY....


could i use black PVC pipes instead of the cans?

i understand the concept of the project, just wondered if i could use that instead.

thinking about making these for coops and our attached garage. good money savings!

 

[MichiganWoods]

miss_jayne, I would assume the PVC would not work as well being that it's plastic and not as heat conducive as the metal of the cans? Maybe I'm wrong?

 

[miss_jayne]

that's what i was wondering. but, being black is what heats up the air more...hmmmmmm....

any one else? JIM WHERE ARE YOOOOOOU?


edited for an uber dumb typing error. i should not be allowed to type and talk at the same time.

 

[the1much]

he SHOULD have an inlet hole in the bottom to allow the air to go IN and when it heats up, it will automatically rise to the top ( kinda like the dude on the second link) thats why the second link dude dont need a fan, heat rises, but he also isnt getting much out of it,,, you need a hole in the bottom of the box, then there SHOULD be a hole in the barrier on the bottom to allow the air in,, and the fan should be at the top.

 

[Guitartists]

Saw this in one of the comments of the second link


Take the same box and insulate it on the inside with a little foam from packaging. Paint black. Go to your neighborhood machine shop and collect all the alluminum shavings they will give you. Paint them black and stuff in the box. Cover the box with plexiglass. This (metal sponge) is a lot easier than cans to create and has more surface area.


What do you think?

 

[MichiganWoods]

I'm actually curious if this can be converted into a slow cooker for camping, or for an alternative for us here stuck using (unGodly expensive) propane.

 

[the1much]

Quote:
ya clack pvc will work,, just not as quick as the cans,, BUT, the pvc will hold the heat longer after the clouds cover the sun,,,,, i have black pvc pipe that 32 inches round,, and the walls are 2 inches thick,, and even during these cold night,, you go out and touch them and their WAY warmer then the air

 

[HennysMom]

ahhhhh... okay - now that makes more sense to me. I liked the first design better than the 2nd, but was unsure how he did it since he didnt state there was a hole there in the barrier.

See... I thought I was losing my mind there and began to confuse myself LOL! I knew I was making sense, but then began to wonder if I was only making sense to myself (as my husband sometimes tells me I often do)

Thank you