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Return to Solar cooker.
Project is current:
Short description of the project:
Design and implement a low cost solar heat aggregator for cooking (heat transfer) or electricity production
An experiment with recycled hard disk platters, which are excellent no-cost reflectors for sun light. A solar cooker is developed by building an array of mirrors to aggregate light to a focal line or point. The energy can either be focused to a cavity or transferred to store the heat elsewhere to drive a generator a Peltier element, or other stuff.
* Recycled hard-drives platters
* blackboxed cooking cavity
* glass or copper (inox-plated) tubing (250C+ temps!)
* CNC-milled directors for the platters
* possible deformators to create semi-parabolic mirrors, needs extra fabbing
* Extra solar PV-panel for DC-current
=Some reference ideas=
*[http://solarcooking.wikia.com/wiki/Cylindro-parabolic_solar_cookers Cylindro-parabolic solar cookers]
* [http://solarcooking.wikia.com/wiki/Indirect_solar_cookers Indirect solar cooker]
* Hard disks platters reflective surface measure about:
((95mm-25mm)/2)^2 *PI = 0,001225 * 3,141593 =
0,003848 m^2 = (3.8 x 10-3)
* Solar constant = 1.361 kW/m² [https://secure.wikimedia.org/wikipedia/en/wiki/Solar_constant wikipedia]
* The exact amount of yield to produce is not set yet. Please assist, here depending on the applications: Cooking coffee, frying eggs, powering a peltier element.
A compact linear fresnel reflector-array is easy to adjust to the earth motion. [https://secure.wikimedia.org/wikipedia/en/wiki/Packing_problem Packing circles in squares]
Help with some arduino-project with some suntracking software a stepper-motor and we are all-set. Oh, some wood working is needed, please wheel in some euro-pallet please.
=Reflective platter surface deterioratio=
* The disk platters normally live in a semi dust-free enclosure. Using them under semi-harsh conditions where heat, weather and PM10 or PM5 conditions is to be discussed. From november 2011 to march 2012 a platter will be actively exposed to the harsh conditions the Antwerp Ring poses to 100.000 living under less-than 500m distance. The disks are dead OK, but the sputtered reflective surface might deteriorate seriously.
* How to measure reflectance properly? Please add your suggestions to the talk page.
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