Rocks & mirror
WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

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303 results

Ammonia slip

marine

Amount of unreacted ammonia emitted from a control equipment such as electrostatic precipitator, selective catalytic reduction (SCR) or selective non-catalytic reduction process.

Amorphous metal transformer

energy

An amorphous metal transformer (AMT) is a type of energy efficient transformer found on electric grids.

Amorphous silicon

energy

Amorphous silicon is the non-crystalline form of silicon used for solar cells and thin-film transistors in LCDs.

Ampacity

energy

Ampacity is defined as the maximum current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating

Ampere

energy

The ampere, (often shortened to "amp"), is the base unit of electric current in the International System of Units (SI).

Ampere hour

energy

An ampere hour or amp hour (Ah) is a unit of electric charge, having dimensions of electric current multiplied by time, equal to the charge transferred by a steady current of one ampere flowing for one hour. The energy content of a battery is usually expressed indirectly by its capacity in ampere-hours;

Amplification

marine

The ratio of output to input magnitude in a device which is designed to produce an increased value output.

Amplitude

marine

The maximum displacement of a varying quantity, measured from some datums.

Anaerobic decomposition

energy

Anaerobic decomposition is a sequence of processes by which microorganisms break down biodegradable material in the absence of oxygen.

Anaerobic digestion

energy

Anaerobic digestion is a sequence of processes by which microorganisms break down biodegradable material in the absence of oxygen.

Analogue components

marine

Analogue components generate time-continuous outputs (volts, pressure, and so forth) to manipulate process inputs and which operate on continuous signals from instrumentation measuring process variables (position, temperature, and so forth).

Anchor

marine

A heavy forging or casting shaped to grip the sea bottom, and by means of a cable or rope, holds a ship or other floating structure in a desired position regardless of wind and current.

Anchor chain, anchor cable

marine

A heavy chain used for holding a vessel at anchor. The total length of chain is to be divided in approximately equal parts between the two bower anchors.

Anchor pocket

marine

A recess in the bow plating large enough to accommodate the anchor so that there is no projection outside of shell plating.

Anchor windlass trials

marine

Each windlass shall be tested under working conditions after installation on-board to demonstrate satisfactory operation. Each unit is to be independently tested for braking, clutch functioning...

Anchor/mooring equipment of Bergesen’s LNG tankers

marine

Rauma Brattvaag has provided anchoring and mooring systems for 140,000m3 LNG tankers built by Daewoo for Bergesen ASA.

Anchor/mooring equipment of the cruise liner ELATION

marine

Low-noise anchoring and mooring equipment are valued by Carnival Cruise Lines, whose 70,400gt ELATION and PARADISE feature two sets of Rauma electric combined mooring winch/windlass units on the forward mooring deck.

Anchor/mooring equipment of the shuttle tanker KNOCK WHILLAN

marine

The ship is equipped with an electro-hydraulic combined anchor windlass/mooring winch. The windlass is a 49.5t capacity device rated at 9 m/min, and the mooring winch is 20t capacity device rated at 15 m/min with two drums and two sets.

Ancillary services (electric power)

energy

Ancillary services are the services necessary to support the transmission of electric power from generators to consumers given the obligations of control areas and transmission utilities within those control areas to maintain reliable operations of the interconnected transmission system.

Anemometer

energy

Fitted to a wind turbine, measures the wind speed and transmits wind speed data to the controller.

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