hydrostatic head

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• Hydrostatic head — When generating hydropower, the head is a general term used to describe the distance that a given water source has to fall before the point where power is generated. Ultimately the force responsible for hydropower is gravity, so a… …   Wikipedia

• hydrostatic head — noun the pressure at a given point in a liquid measured in terms of the vertical height of a column of the liquid needed to produce the same pressure (Freq. 1) • Hypernyms: ↑pressure, ↑pressure level, ↑force per unit area * * * noun : a measure… …   Useful english dictionary

• Hydrostatic weighting — Hydrostatic (underwater) weighing is used to measure body composition and percentage body fat. This is occasionally done in the assessment of obesity. Is based on Archimedes principle. The residual volume in the lungs can add error to ones… …   Wikipedia

• Head pressure — may refer to: *Discharge pressure *hydrostatic pressure difference …   Wikipedia

• pressure head —    Hydrostatic pressure expressed as the height of a column of water that the pressure can support at the point of measurement [22].    See also head, static; pressure, hydrostatic …   Lexicon of Cave and Karst Terminology

• Hydraulic head — is a specific measurement of water pressure or total energy per unit weight above a geodetic datum. It is usually measured as a water surface elevation, expressed in units of length, but represents the energy at the entrance (or bottom) of a… …   Wikipedia

• Tent — For the tetanus neurotoxin (TeNT), see Tetanospasmin. A modern two person, lightweight hiking dome tent; it is tied to rocks as there is nowhere to drive stakes on this rock shelf A tent is a shelter consisting of sheets of fabric or other… …   Wikipedia

• Blowout (well drilling) — A blowout is the uncontrolled release of crude oil and/or natural gas from an oil well or gas well after pressure control systems have failed.[1] Prior to the advent of pressure control equipment in the 1920s, the uncontrolled release of oil and… …   Wikipedia

• Waterproof fabric — Waterproof fabrics are usually natural or synthetic fabrics that are laminated to or coated in some sort of permanently waterproofing material, such as rubber, polyvinyl chloride (PVC), polyurethane (PU), silicone elastomer, and wax. Examples… …   Wikipedia

• Well kill — A well kill refers to the operation of placing a column of heavy fluid into a well bore in order to prevent the flow of reservoir fluids without the need for pressure control equipment at the surface. It works on the principle that the weight of… …   Wikipedia

• MAASP — Maximum Allowable Annulus Surface Pressure is an absolute upper limit for the pressure in the annulus of an oil and gas well as measured at the wellhead.BackgroundPreserving well integrity is a vital task for the operators. This includes ensuring …   Wikipedia