Tim Anderson: Charcoal briquette machine turns waste into heat

Tim Anderson says:

The Chinese make very effective cooking fuel briquettes from waste cellulose and carbon materials, using local clay for a binder.
The briquettes are cylindrical with a number of air passages through them.
An expat living here told me he had a water heater in Germany in the 1960′s that used the same type of briquettes.

Tim’s page on the machine.

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