Top: Science: Energy: Bioenergy: Terminology: W



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Waste streams

Unused solid or liquid by-products of a process.


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Water-cooled vibrating grate

A boiler grate made up of a tuyere grate surface mounted on a grid of water tubes interconnected with the boiler circulation system for positive cooling. The structure is supported by flexing plates allowing the grid and grate to move in a vibrating action. Ashes are automatically discharged.


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Watershed

The drainage basin contributing water, organic matter, dissolved nutrients, and sediments to a stream or lake.


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Watt

The common base unit of power in the metric system. One watt equals one joule per second, or the power developed in a circuit by a current of one ampere flowing through a potential difference of one volt. One Watt = 3.413 Btu/hr. See also kilowatt.


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Wheeling

The process of transferring electrical energy between buyer and seller by way of an intermediate utility or utilities.


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Whole-tree harvesting

A harvesting method in which the whole tree (above the stump) is removed. 



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