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A CLASS PROJECT NEED HELP

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We are doing this for a school project help would be very helpful [smile]

gbwillson

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Reply with quote  #2 
Welcome!

Tell us about your school project.

Greg in MN[wave]
A CLASS PROJECT NEED HELP

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Reply with quote  #3 
We need to make a solar hot air collector or any solar object w need to know the materials we need for under $11 
stmbtwle

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Reply with quote  #4 
I'd suggest building it out of cardboard and packing tape, with maybe a clear plastic drop cloth for 'glass'. Paint the inside flat black with water based paint.

Study the air collector section and decide what style you want to build.

Others can give more suggestions.

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Willie, Tampa Bay
Rick H Parker

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What grade are you in?


Hey guy how about a pop can collector?  Include recycling and recycling and repurposing in the experience. I'm sure they could come up with the pop cans for nothing. Black paint, good chance some of their parents have a can or partial cans sitting around.  Drop cloths are made of poly sheets ... how much of that is just collecting dust?

If somebody has some large pieces of left over window screen ... you guys know where this is going.

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Rick H Parker
Kansas, USA
Electronics Engineering Technologist
stmbtwle

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I wouldn't use pop cans. Yes they're "cool" and free, but a pop can collector is a lot of work, and cutting the ends out of the cans could cause serious injury. A screen collector is easier and safer to build.

What to use for a fan?

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Willie, Tampa Bay
gbwillson

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Without knowing the age and experience of the students building the collector, I would hesitate using cans too. And if it's simply a project to show the theory of solar heating, you could forgo cutting the ends of the cans and simply poke large holes on the ends.

A small fan will add cost unless you can scrounge one, but greatly improve heat output of a heater. A computer fan attached powered by a small solar panel, say from a landscape light might work.

Greg in MN
SolarInterested

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Reply with quote  #8 
Given your budget a simple cardboard solar box cooker might be an idea:

http://solarcooking.wikia.com/wiki/%22Minimum%22_Solar_Box_Cooker

http://solarcooking.wikia.com/wiki/Cardboard

http://solarcooking.wikia.com/wiki/Solar_box_cooker_designs

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

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Reply with quote  #9 
Hadn't thought of that but a solar cooker would be a good option. A cardboard box, some spray adhesive and a roll of aluminum foil is about all it would take.


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Willie, Tampa Bay
A CLASS PROJECT NEED HELP

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Thanks

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