Introduction to Interactive Figures
Figures 1 thru 5 (as referenced in the Energy-Mass Flow Model) visualize the complexity of
energy and material streams in a sustainable community. The community includes
multi-family residences, businesses, industries, and an infrastructure typical
for a population of 100,000 people. The community and surrounding farm and
forestland is self-sustained in terms of basic food supply and energy
production, but it interacts with other communities and the environment in its
mass and energy flows. Products and services are exchanged/exported and raw and
processed materials, manufactured goods, and fuels are imported from other
communities.
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