Lammas is a community composed of nine families who desire to live in a sustainable energy
environment, without using electricity or gas. Thus, they need to find a solution for their
cooking facility and that is what this dissertation is dedicated to.
The rocket stove is a traditional improved wood burning stove. It works based on principles
such as a uniform cross section along a well-insulated combustion chamber.
Short rotation coppice willow is a bio-fuel which is being grown as part of the Lammas project.
The study of its combustion has led to the determination of the amount of fuel required in order
to achieve the desired cooking temperatures.
The combination of the rocket stove principles, domestic cooker technology and the use of biofuel has led to the development of device that the community can use as an oven or as a hot
plate.
By using Computational Fluid Dynamics (CFD) modeling software, the heat flow in the cooker
was analyzed and used to design an oven with a uniform temperature distribution required for
good cooking.
CFD software was used to study materials and to provide good insulation using ceramic clay on
the outside, and a good cooking feature by using steel in order to conduct the heat to the oven
and the hotplate.
With good insulation and the use of a chimney (a flue pipe outlet that will carry away all smoke)
a clean indoor environment has been maintained.
Thus, by combining safety and efficiency, the proposed cooker will enable the community to
build a cost-effective device which will help them in their everyday life.
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