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| B20 |
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A mixture of 20% biodiesel and 80% petroleum diesel based on volume.
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| Back connected |
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A condition where pipe connections are on normally unexposed surfaces of hydraulic equipment. (Gasket mounted units are back connected.)
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| Back pressure |
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A pressure in series. Usually refers to pressure existing on the discharge side of a load. It adds to the pressure required to move the load.
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| Bacteria |
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A small single-cell organism. Bacteria do not have an organized nucleus, but they do have a cell membrane and protective cell wall. Bacteria can be used to ferment sugars to ethanol.
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| Baghouse |
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An air pollution control device that captures particulate in filter bags.
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| Barrel of oil equivalent (boe) |
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The amount of energy contained in a barrel of crude oil, i.e. approximately 6.1 GJ (5.8 million Btu), equivalent to 1,700 kWh. A "petroleum barrel" is a liquid measure equal to 42 U.S. gallons (35 Imperial gallons or 159 liters); about 7.2 barrels are equivalent to one tonne of oil (metric).
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| Bearings |
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A part on which the arbor, pivot, pin, or the like, turns or revolves.
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| Belt |
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Part of the conveyor on which pieces of wood are displaced.
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| Bight |
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A work area made hazardous by a line or equipment under tension.
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| Biochemical conversion |
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The use of fermentation or anaerobic digestion to produce fuels and chemicals from organic sources.
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| Biodegradable |
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Something that breaks down to its component parts in the environment.
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| Bioenergy |
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Useful, renewable energy produced from organic matter. The conversion of the complex carbohydrates in organic matter to energy. Organic matter may either be used directly as a fuel or processed into liquids and gases.
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| Biogas |
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A combustible gas derived from decomposing biological waste under anaerobic conditions.
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| Biomass |
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Organic matter available on a renewable basis. Biomass includes forest and mill residues, agricultural crops and wastes, wood and wood wastes, animal wastes, livestock operation residues, aquatic plants, fast-growing trees and plants, and municipal and industrial wastes.
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| Biomass boiler |
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Biomass boilers burn bark, sander dust and other wood-related scrap not usable in product production. Also called "hogged fuel" boilers, biomass boilers make steam and heat for mill use.
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| Biomass fuel |
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Liquid, solid, or gaseous fuel produced by conversion of biomass. Examples include bioethanol from sugar cane or corn, charcoal or woodchips, and biogas from anaerobic decomposition of wastes.
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| Biomass Processing Residues |
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Byproducts from processing all forms of biomass that have significant energy potential. Because these residues are already collected at the point of processing, they can be convenient and relatively inexpensive sources of biomass for energy.
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| Bit |
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The smallest unit of memory in a computer. A bit is a single digit and can only have the values 0 or 1. Bits are combined into words of memory.
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| Bleed-off |
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To divert a specific controllable portion of hydraulic pump delivery directly to reservoir.
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| Boiler |
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Steam generation equipment.
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| Bond strength |
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The unit load applied in tension, compression, flexure, cleavage, or shear, required to break an adhesive assembly, with failure occurring in or near the plane of the bond.
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| Bone-dry ton (BDT) |
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Material that weighs 2,000 pounds at zero percent moisture content. Also known as an Ovendry ton or Bone Dry Metric Ton.
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| Bone-dry unit (BDU) |
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A quantity of wood residue that would weigh 2,400 pounds at zero percent moisture content.
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| Bottoming cycle |
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A cogeneration system in which steam is used first for process heat and then for electric power production.
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| Braze |
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As in welding, a method of adhering or soldering carbide or other hard metal teeth inserts, or joining pieces of metal.
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| Breather |
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A device which permits air to move in and out of a container or component to maintain atmospheric pressure.
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| British thermal unit (Btu) |
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The quantity of heat energy required to raise the temperature of one pound of water by one degree Fahrenheit at one atmosphere pressure.
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