Chapter SevenTool 5
District-Level Energy Systems and Food Production
We should factor into future plans the need for a surplus of renewable energy, since not every building will have the potential to become self-powering. Protected historic buildings are the most obvious category. This is not a problem because the productive farmland surrounding almost every major city or conurbation has the potential to fill the shortfall, providing a quarter of the total consumption with biogas energy produced using pyrolysis.
Pyrolysis occurs when organic or man-made carbon-based matter is heated but starved of the oxygen that is normally part of the process of burning. It is really a high-tech equivalent of traditional charcoal burning, only more efficient ...
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