Design Procedures: Part 5
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traditional fuels. But wood refuse, combustible by-product, and mu-
nicipal and industrial waste and industrial process exhaust streams
are all candidates for central plant heating sources. Under some con-
ditions, electricity may be used as an energy input for a central plant.
High-temperature geothermal waters or steam can be used through
heat exchangers for central heating. Direct use of many geothermal
resources incurs problems with corrosive and precipitate aspects of the
waters.
Solid fuels present design challenges related to delivery, handling
and storage of the input fuel, and the collection, storage, and disposal
of the residual matter. Still, there may be appropriate applications for
coal, wood, bagasse, or refuse-derived fuels (RDF).
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