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Fresnel solar cooker designs

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Last updated: July 28, 2015      
Mueller Solartechnik Fresnel test cooker, 1-2-13

The Twin Fresnel Cooker

A Fresnel lens is a lens that works like a standard lens, but which eliminates the bulk of such a lens by the use of a series of angled steps in the front surface of an otherwise flat sheet of glass or plastic. The steps are angled in such a way as to concentrate light at the focus.

Recent news and developmentsEdit

  • December 2012: Bernhard Müller has published findings based on his experimentation with a twin Fresnel lens reflector solar cooker. This cooker was never meant to be a production prototype, and his company, Mueller Solartechnik, no longer manufactures solar cookers. As an engineering exercise, he has shown that incorporating the Fresnel lens produces quite high temperatures(278.6°C/534°F). However, the usable cooking area is small. Read more: Twin Fresnel Cooker
Wilson solar grill, 8-11

Wilson solar grill potentially may be able to use latent heat storage to cook after sunset. This photograph is a Photoshop representation.

  • August 2011: Students at MIT are working on a case study for a new type of solar powered outdoor grill. Based on the technology from MIT professor David Wilson, this grill would collect thermal energy from the sun and store it to allow cooking times for up to twenty five hours at temperatures above 230°C (450°F). Wilson’s technology uses a Fresnel solar reflector to harness the sun’s energy to melt down a container of Lithium Nitrate. The Lithium Nitrate serves as a solar battery. Due to its phase change reaction, the thermal energy is able to be stored for longer periods of time and at higher temperatures, by means of latent heat storage. Heat is then redistributed through convection, which allows for outdoor cooking. A Solar Grill Prototype for a Greener Tomorrow, August, 2011 - BarbequeLovers.com
  • April 2010: Patricia McArdle met a group of Navajo high school students who have used designs they found on the internet to make several solar cookers including the Cookit, box cookers and a Fresnel lens solar fryer for making traditional Navajo fry bread. Their Fresnel cooker won second prize two weeks ago at the nationwide Spirit of Innovation contest--beating out some elite science high schools. They and their science teacher, Paul McCarl, working with very limited resources, are now trying to make a large fresnel solar cooker that can be used by Navajo families to make fry bread.

Audio and videoEdit

  • January 2013:
Make a Solar Cooking Frame for Cheap (Fresnel Lens Frame)04:51

Make a Solar Cooking Frame for Cheap (Fresnel Lens Frame)

Grant Thompson describes the steps to create a fresnel lens with a moveable frame.

  • May 2012:
Sun Cart10:17

Sun Cart

  • July 2010:
Navajo Students Native Sun Fresnel Solar Cooker03:49

Navajo Students Native Sun Fresnel Solar Cooker.mov

Science teacher Paul McCarl inspired his students at Whitehorse High School in Montezuma Creek, Utah to build and enter a fresnel solar cooker in the Spirit of Innovation Award contest. The students' Native Sun Solar cooker which can make traditional fry bread was a finalist in the competition.

  • May 2008
SOLAR COOKING PASTA FRESNEL LENS STOVE OVEN SOLAR POWER Mirror Bouncing06:11

SOLAR COOKING PASTA FRESNEL LENS STOVE OVEN SOLAR POWER Mirror Bouncing

See alsoEdit

External linksEdit

All Fresnel cooker designsEdit

Media in category "Fresnel solar cooker designs"

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