Top: Science: Energy: Bioenergy: Terminology: R



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Recovery boiler

A pulp mill boiler in which lignin and spent cooking liquor (black liquor) is burned to generate steam.


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Refractory Lining

A lining, usually of ceramic, capable of resisting and maintaining high temperatures.


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Refuse-derived fuel

(RDF) Fuel prepared from municipal solid waste. Noncombustible materials such as rocks, glass, and metals are removed, and the remaining combustible portion of the solid waste is chopped or shredded. RDF facilities process typically between 100 and 3,000 tons of MSW per day.


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Reserve Margin

The amount by which the utility's total electric power capacity exceeds maximum electric demand.


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Return on investment

(ROI) The interest rate at which the net present value of a project is zero. Multiple values are possible


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Rotation

Period of years between establishment of a stand of timber and the time when it is considered ready for final harvest and regeneration. 



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