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Micro-gasification: Cooking with gas from biomass - Amper

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<strong>Micro</strong>-<strong><strong>gas</strong>ification</strong>: <strong>Cooking</strong> <strong>with</strong> <strong>gas</strong> <strong>from</strong> dry <strong>biomass</strong><br />

II) Lever-presses (wet pulp, low-moderate pressure)<br />

Levers are good tools to create elevated pressure just <strong>with</strong> the input of human power.<br />

Longer or multi-compound levers increase the achievable pressures. Levers are faster to<br />

use than screw platens or hydraulic jacks.<br />

There is a multitude of different lever presses out there. This section showcases only a selected<br />

sample of models which are easy to replicate or where plans for replication are<br />

available.<br />

a) Paper-brick Maker<br />

<strong>from</strong> Newdawnengineering<br />

at ca. 300 ZAR<br />

Makes a 230x90mm fuel<br />

brick out of waste paper<br />

which can be mixed <strong>with</strong><br />

other combustible fuels<br />

like wood chips, grass or coal dust. Paper is a very good binder and<br />

should be used in combination <strong>with</strong> any other waste fuel that is<br />

available. Pressure generated by two small levers.<br />

Ideal for decentralised small-scale production. More details at<br />

http://www.newdawnengineering.com/website/paper/brick/.<br />

Reference to a bigger unit <strong>from</strong> the same company is made at<br />

http://www.newdawnengineering.com/website/stove/firecube/<br />

b) Wooden presses by Leland Hite<br />

A very simple and low-cost <strong>biomass</strong> fuel briquette press made <strong>from</strong> wood can be found on<br />

http://www.youtube.com/watch?v=Mt0QQe6Eetw. The very instructional video showcases<br />

simple yet powerful and versatile versions of wooden single-lever and multi-compound lever<br />

briquette presses, which can produce square or round <strong>biomass</strong> briquettes at a speed of<br />

less than 1 minute per briquette. Measured drawings in inches or metric measurements in<br />

english and french language (incl. link to the video) can be found on<br />

http://www.home.fuse.net/engineering/ewb_project.htm<br />

Source: http://www.home.fuse.net/engineering/ewb_project.htm<br />

HERA – GIZ Manual <strong>Micro</strong>-<strong><strong>gas</strong>ification</strong> Version 1.01 January 2011<br />

85

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