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− | [[Solar box cookers]] and [[solar panel cookers]] normally do not need to be turned to follow the sun unless you are cooking beans or an especially large amount of food. They may need to be moved |
+ | [[Solar box cookers]] and [[solar panel cookers]] normally do not need to be turned to follow the sun unless you are cooking beans or an especially large amount of food. They may need to be moved once over a three or four hour cooking period. However, [[parabolic solar cooker]]s require constant reorientation with the sun to remain effective cookers. If tracking the sun is necessary, some of the ideas below will serve this purpose. |
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==Programable tracking systems== |
==Programable tracking systems== |
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− | Still in its infancy, programable tracking systems are being developed with software to not only rotate the reflector to maintain maximum exposure to the sun, but to also control cooking time and desired |
+ | Still in its infancy, programable tracking systems are being developed with software to not only rotate the reflector to maintain maximum exposure to the sun, but to also control cooking time and desired temperatures. One example of auto tracking and monitoring system is the [http://www.solarcue.com SolarCue system]. |
+ | [[Category:Materials]] |
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==Photovoltaic tracking systems== |
==Photovoltaic tracking systems== |
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− | |[[File:Solar Oven with Tracker .mpg| |
+ | |[[File:Solar Oven with Tracker .mpg|425px]] |
|'''March 2011:''' Box cooker rotated by PV panels sending power to 12 volt motor. As one PV panel begins to receive less light, it sends less power to the servo, which operates the motor until both panels are a sending balanced power stream. |
|'''March 2011:''' Box cooker rotated by PV panels sending power to 12 volt motor. As one PV panel begins to receive less light, it sends less power to the servo, which operates the motor until both panels are a sending balanced power stream. |
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− | |[[File:Revolutionary Solar! Stirling engine mount + Liquid piston tracker| |
+ | |[[File:Revolutionary Solar! Stirling engine mount + Liquid piston tracker|610px]] |
|'''March 2010:''' [[Tracking Solar Accumulating Barbecue]] - ''[[Brian White]]'' |
|'''March 2010:''' [[Tracking Solar Accumulating Barbecue]] - ''[[Brian White]]'' |
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+ | |[[File:Clock based dripper tracker demo.|425px]] |
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− | |<youtube>vL14kpcR8yw</youtube> |
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|'''May 2008:''' Clock based dripper tracker demo |
|'''May 2008:''' Clock based dripper tracker demo |
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+ | |[[File:Dripper tracker for parabolic solar accumulator!|425px]] |
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− | |<youtube>69FXae8DOlU</youtube> |
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|'''June 2006:''' Dripper tracker for parabolic solar accumulator |
|'''June 2006:''' Dripper tracker for parabolic solar accumulator |
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*[http://electroschematics.com/8019/diy-solar-tracker-system DIY photovoltaic solar tracking system] |
*[http://electroschematics.com/8019/diy-solar-tracker-system DIY photovoltaic solar tracking system] |
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*[http://www.simply-solar.de/index.php/products/tracking-systems Scheffler tracking systems] |
*[http://www.simply-solar.de/index.php/products/tracking-systems Scheffler tracking systems] |
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− | *[http://iapnews.wordpress.com/2010/02/12/solar-cooker-research-in-jordan/ Solar cooker research in Jordan] |
+ | *[http://web.archive.org/20100228043451/iapnews.wordpress.com/2010/02/12/solar-cooker-research-in-jordan/ Solar cooker research in Jordan] |
*[http://solarcooking.org/research/cookpend.htm Solar Tracking With A Box-Style Cooker] - ''[[Jim Thomasson]]'' |
*[http://solarcooking.org/research/cookpend.htm Solar Tracking With A Box-Style Cooker] - ''[[Jim Thomasson]]'' |
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*Readymade Solar Oven Trackers available for purchase at: [http://www.solaroventrackers.com/ www.solaroventrackers.com] |
*Readymade Solar Oven Trackers available for purchase at: [http://www.solaroventrackers.com/ www.solaroventrackers.com] |
Revision as of 18:49, 24 January 2014
Solar box cookers and solar panel cookers normally do not need to be turned to follow the sun unless you are cooking beans or an especially large amount of food. They may need to be moved once over a three or four hour cooking period. However, parabolic solar cookers require constant reorientation with the sun to remain effective cookers. If tracking the sun is necessary, some of the ideas below will serve this purpose.
350px|none|See Tracking Solar Accumulating Barbecue.
Scheffler Community Kitchen clockwork tracking system
Simply Solar provides explanation of their various tracking systems at Scheffler tracking systems. The mechanical system incorporates a clockwork mechanism, and often uses recycled bicycle parts. It is run by a weight and controlled by a pendulum. Resetting the reflector back from the evening position to the morning position is done by hand. They also offer photovoltaic options as well.
- See Scheffler Community Kitchen.Scheffler Community Kitchen
Programable tracking systems
Still in its infancy, programable tracking systems are being developed with software to not only rotate the reflector to maintain maximum exposure to the sun, but to also control cooking time and desired temperatures. One example of auto tracking and monitoring system is the SolarCue system.
Photovoltaic tracking systems
A clever system has been developed by several designers, which uses two photovoltaic panels configured to maintain an even balance of power to a small electrical turntable motor. The required photovoltaic panels typically are fairly small, and are placed side by side, but at slightly different angles to face the sun. As the sun moves across the sky one panel will begin to receive less direct sunlight.
The resulting electrical imbalance causes the dominant panel to engage the motor. The turntable will rotate until both photovoltaic panels face the sun equally, and the motor disengages. The simple system can be fairly lightweight for rotating a box or panel cooker. However, a larger parabolic solar cooker, which will benefit the most from a good tracking system, will require a stronger motor and larger panels to rotate the cooker.
More information about the system designed by Marian Popescu can be found at DIY solar tracking system
Audio and video
thumb|400px|left
- December 2010: Programable system tracks the sun, and turns the reflector away when cooking is completed.
400px|
425px|April 2010: UC Berkeley student tracking system demonstration |
March 2010: Tracking Solar Accumulating Barbecue - Brian White |
May 2008: Clock based dripper tracker demo |
June 2006: Dripper tracker for parabolic solar accumulator |
See also
- Scheffler Community Kitchen
- Sun Switch
- Tracking Solar Accumulating Barbecue
- Tanoor
- Brian White
- Super Solar Tracker for Solar Ovens
- Solar calculations
External links
- DIY photovoltaic solar tracking system
- Scheffler tracking systems
- Solar cooker research in Jordan
- Solar Tracking With A Box-Style Cooker - Jim Thomasson
- Readymade Solar Oven Trackers available for purchase at: www.solaroventrackers.com
- Solar Oven Trackers - Small Power Systems
- French: Pisteurs pour four solaire
- Appropedia heliostats article
- LightManufacturing Systems heliostats (commercial) and Solar Manufacturing systems