Rocks & mirror
WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

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Stable stratification

energy

Stable stratification of fluids occurs when each layer is less dense than the one below it.

Stack

energy

The pipe or trunking that conveys exhaust gases from the engine to the atmosphere.

Stack effect

energy

Stack effect or chimney effect is the movement of air into and out of buildings, chimneys, flue-gas stacks, or other containers, resulting from air buoyancy.

Stack Emissions

energy

The waste products from fuel combustion that exhausts to atmosphere via a dedicated pipe or trunking.

Stacking cover

marine

A type of a hatch cover in which the individual panels may by stacked to provide various opening arrangements.

Stage (hydrology)

energy

In hydrology, stage refers to the water level in a river or stream with respect to a chosen reference height.

Stainless steel

energy

Stainless steel is a group of iron-based alloys that contain a minimum of approximately 11% chromium, a composition that prevents the iron from rusting and also provides heat-resistant properties.

Stairways

marine

Interior stairways, lifts and escalators (other than those entirely contained within the machinery spaces) and enclosures thereto.

Stakeholders

energy

Individuals or companies that have a vested interest in a process.

Stall

energy

A stall on a turbine blade occurs when air passes over it in such a way that the generation of lift rapidly decreases.

Stall-regulated wind turbine

energy

Stall-regulated wind turbine have blades designed so that when wind speeds are high, the rotational speed decreases with increasing wind speed.

Stanchion

marine

A vertical column supporting decks, flats, girders, etc; also called a pillar. Rail stanchions are vertical metal columns with fence-like rails mounted on them.

Stand-alone inverters

energy

Used in isolated solar systems where the inverter draws its DC energy from batteries charged by photovoltaic arrays.

Stand-alone power system

energy

A stand-alone power system also known as remote area power supply, is an off-the-grid electricity system for locations that are not fitted with an electricity distribution system.

Standard atmosphere (unit)

energy

The standard atmosphere (symbol: atm) is a unit of pressure defined as 101325 Pa (1.01325 bar).

Standard atmospheric pressure

energy

The standard atmosphere (atm) is a unit of pressure defined as 101325 Pa (1.01325 bar).

Standard conditions for temperature and pressure

energy

Standard temperature and pressure are standard sets of conditions for experimental measurements to be established to allow comparisons to be made between different sets of data.

Standard cubic foot

energy

A standard cubic foot (scf) is a unit used both in the natural gas industry to represent an amount of natural gas and in other industries where other gases are used.

Standard fire test

marine

A test in which specimens of the relevant bulkheads or decks are exposed in a test furnance to temperatures corresponding to the standard time-temperature curve as defined by Annex 1 of Part 3 of IMO Fire Tests Procedures Code.

Standard loading conditions

marine

Loading conditions to be examined for the purpose of assessing whether the stability criteria are met.

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