Evacuated Tube Indirect Solar Cooker

John Grandinetti demonstrates his solar cooker

In May 2008, John Grandinetti publicized his version of an indirect solar cooker through an interview with television station KITV. The interview was picked up by affiliate stations and eventually broadcast on CNN. Details of John Grandinetti's design are limited, however it appears to be an improved version of the Whiller indirect cooker design.

The primary innovation over the Whiller design is the use of an evacuated tube solar collector as the collecting element of the cooker. Evacuated tubes have been used in solar hot water systems, and are considered a mature, efficient technology. By replacing the copper pipe and fin in the Whiller design, John Grandinetti claims during his media interview that his indirect cooker design can reach temperatures of 400°F in direct sunlight. The Grandinetti design replaces water with oil for the heat transport mechanism in order to sustain these temperatures.

Mr. Grandinetti has offered to grant royalty free production rights to his design to any company capable of large scale manufacturing and commercial distribution in third-world countries.

External Links

• John Grandinetti interview on KITV (Honolulu, HI) http://www.kitv.com/video/16158443/index.html