Stack
A chimney, smokestack, or vertical pipe that discharges used air.
Source: Terms of the Environment ...
Stack Effect: Pressure-driven airflow produced by convection as heated air rises, creating a positive pressure area at the top of a building and a negative pressure area at the bottom of a building.
stack gas See flue gas.
stack-unit maps A map showing the areal distribution of geologic materials based on their order of occurrence to a specified depth.
stack effect : Air, as in a chimney, that moves upward because it is warmer than the ambient atmosphere.
stagnation : Lack of motion in a mass of air or water that holds pollutants in place.
Permit Stacking
The registration of more than one limited entry permit for a single vessel, where a vessel is allowed additional catch for each additional permit registered for use with the vessel.
Stacked coins of the same denomination, in a pre-determined quantity, wrapped in paper and stored, minutes after being minted.
Overdate ...
stack as it drifts downwind in the atmosphere).
point of disinfectant application. The point where disinfec-
tant is applied and water downstream of that point is not ...
Single Stack Meteorological Model in EPA UNAMAP Series
PTE
Potential to Emit ...
a pipe, ditch, ship, ore pit, factory smokestack. Pollution Generally, the presence of a substance in the environment that, because of its chemical composition or quantity, ...
The way polluted water extends downstream from the pollution source (analogous to smoke from a smokestack as it drifts downwind in the atmosphere).
point of disinfectant application.
many coal-burning power plants use Flue gas desulfurization (FGD) to remove sulfur-containing gases from their stack gases. An example of FGD is the wet scrubber which is commonly used in the U.S. and many other countries.
Air emissions that are not released through stacks, vents, ducts, pipes, or any other confined air stream. These irregular, unintended gas releases result mainly from industrial activities.
PTDIS- Single Stack Meteorological Model in EPA UNAMAP Series
PTE- Potential to Emit
PTFE- Polytetrafluoroethylene (Teflon)
PTMAX- Single Stack Meteorological Model in EPA UNAMAP series
PTPLU- Point Source Gaussian Diffusion Model ...
Cooling tower: A large tower or stack that is used for heat exchange of once-through cooling water generated by steam condensers. Hot water from the plant is sprayed into the top of the tower and exchanges heat with the passing air as it falls.
The creation of surplus emission reductions at certain stacks, vents or similar emissions sources and the use of this surplus to meet or redefine pollution requirements applicable to other emissions sources.
Plume - A plume is a visible smoke-like structure, which may contain pollutants emitted from an exhaust or smoke stack and released into the atmosphere.
An air quality audit in a factory would look at whether the factory is measuring the emission from its stacks (chimneys) correctly, whether staff running the boilers are adequately trained, ...
Writing in New Scientist magazine, Bill McGuire, professor of geological hazards at University College in London, said: "All over the world evidence is stacking up that changes in global climate can and do affect the frequencies of earthquakes, ...
Phosphogypsum Piles (Stacks): Principal byproduct generated in production of phosphoric acid from phosphate rock. These piles may generate radioactive radon gas.
Fugitive Emissions: Air pollutants released to the air other than those from stacks or vents; typically small releases from leaks in plant equipment such as valves, pump seals, flanges, sampling connections, etc.
High relief coins required extra pressure to be fully struck, and were difficult to stack. Therefore, the few coins struck in high relief by the U.S.
Mechanism or equipment that cleans emissions generated by a source (e.g., an incinerator, industrial smokestack, or an automobile exhaust system) by removing pollutants that would otherwise be released to the atmosphere.
Air Pollution Episode ...
While conditions are poor, primordia are stacked under the resting bud. When conditions are once again favorable, this resting bud flushes. A resting bud may become an overwintering bud, failing to elongate in response to declining daylength.
Air Pollution Control Device: Mechanism or equipment that cleans emissions generated by a source (e.g. an incinerator, industrial smokestack, or an automobile exhaust system) by removing pollutants that would otherwise be released to the ...
stationary source - a non-moving source of pollution, such as a factory smokestack.
Definition: A stationary location or fixed facility from which pollutants are discharged; any single identifiable source of pollution; e.g. a pipe, ditch, ship, ore pit, factory smokestack.
P (See phosphorus)
PAH (See polycyclic aromatic hydrocarbon) ...
Continuous Emission Monitor (CEM): A type of air emission monitoring system installed to operate continuously inside of a smokestack or other emission source.
Typically consists of a furnace and stack unit used for a variety of disposal activities including the controlled burning of medical waste, packaging and varieties of municipal waste.
Incompatible Waste ...
The most effective emission controls involve the redesign of the process so less waste is produced at the source. Common emission controls are wastewater treatment plants, stack scrubbers and in-plant, solid waste reduction programs.
flaring The burning of waste gases through a flare stack or other device before releasing them to the air. flow law In glaciology, a constitutive relation for the analysis of three-dimensional deformation states of ice subjected to stress.
Population pyramid A means of illustrating the age structure of a population diagrammatically, by placing the youngest age class at the base and stacking successive age classes above it.
 See also: Water, Environment, Air, Environmental, Reduce
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