water column


Also found in: Dictionary, Acronyms, Wikipedia.

water column

[′wȯd·ər ‚käl·əm]
(mechanical engineering)
A tubular column located at the steam and water space of a boiler to which protective devices such as gage cocks, water gage, and level alarms are attached.
References in periodicals archive ?
Speaking about his motivation for designing the device, Ajami said: "This device was designed to respond to the lack of a similar domestically-manufactured sample in the country for injection of foam into oil and gas wells; the use of foam is one of the low-cost and high-efficiency methods for restoring wells that form water columns that hinder production.
Meteorological and oceanographic conditions: are responsible for light attenuation through the atmosphere and water column until reaching the effluent plume that can be at the surface or submerged.
Measured flow rates and water levels, which characterize well the transition from full-pipe-diameter flow to stratified flow (free-surface flow) during the emptying process, are used to estimate the velocity of the leading air-water front, representing the last fully filled cross-section of the water column.
And their construction gives them enhanced maneuverability: batteries power a pump that adjusts the glider's buoyancy and allows it to move vertically through the water column.
The composition, vertical distribution and primary productivity of algal populations are directly affected by the interaction of various factors that modulate the thermal and chemical structure of the water column, notably the heat flux, wind velocity, density, viscosity and nutrient availability (Cantin et al.
Thus there can be considerable variation in gamete concentration within the water column and at different locations on and around a spawning female, even under similar flow conditions.
During dry seasons, the pull on water within the xylem increases, causing the water column to break and form air bubbles, which emit a sound that is too high in frequency for humans to hear.
Made with a proprietary hydrophobic, microporous polyurethane layer, NeoShell is waterproof up to an industry-standard 10,000-mm water column.
of water column up to 10 psig, the regulator reduces the effects of supply pressure changes on output pressure via a balanced diaphragm design for accurate control.
The 100-metre-high rotating water column, which lasted for just three minutes, developed following a big downpour and a strong gust of wind.
Factors hypothesized to affect pollock cannibalism include: water column stratification and temperature and their effects on food availability; and the horizontal and vertical overlap of prey and predator pollock (Francis and Bailey, 1983; Bailey, 1989; Wespestad et al.
Because the particles are so small, they remain in the water column and can be dispersed over large distances, rather than falling to the sea floor.