Rocks & mirror
WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

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303 results

Alternating current

energy

Electrical current that flows is bi directional.

Alternating current (AC)

marine

Alternating current is a form of electricity in which the current alternates in direction (and the voltage alternates in polarity) at a frequency defined by the generator (usually between 50 and 60 times per second, i.e., 50 – 60 hertz)

Alternator

energy

An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current.

Aluminium

marine

A light metal of a good resistance to atmospheric corrosion. It is used as the base metal for light alloys.

Aluminium alloys

marine

Aluminium alloyed with materials such as copper, manganese, silicon or magnesium, to improve their strength.

Aluminium brass

marine

Brass containing up to 6% aluminium in order to improve resistance to corrosion.

Aluminium bronze

marine

A copper aluminium alloy containing 4-11% of aluminium and other elements for particular properties. It is used for propulsors, valve fittings and other applications where corrosion resistance is important.

Aluminium conductor steel-reinforced cable

energy

Aluminium conductor steel-reinforced cable (ACSR) is a type of high-capacity, high-strength stranded conductor typically used in overhead power lines.

Aluminum conductor composite core

energy

ACCC (Aluminum Conductor Composite Core) is a registered trade mark for a type of "high-temperature low-sag" (HTLS) overhead power line conductor.

Ambient

energy

Natural condition of the environment at any given time.

Ambient air

energy

The surrounding air (usually outdoor air or the air in a specific location).

Ambient conditions

marine

Parameters such as barometric pressure, engine room and seawater temperatures and relative humidity to be taken into account while designing ship’s machinery.

Ambient environment

marine

Environmental conditions that the crew is exposed to during periods of work, leisure or rest.

Ambient ground temperature

energy

The natural temperature of the earth in a specific location.

American National Standards Institute (ANSI)

energy

The American National Standards Institute is a private non-profit organization that oversees the development of voluntary consensus standards for products, services, processes, systems, and personnel in the United States.

American Petroleum Institute

energy

The American Petroleum Institute (API) is the largest U.S. trade association for the oil and natural gas industry.

American wire gauge (AWG)

energy

American Wire Gauge, also known as the Brown & Sharpe wire gauge, is a logarithmic stepped standardized wire gauge system used since 1857, predominantly in North America, for the diameters of round, solid, nonferrous, electrically conducting wire.

Amidships

marine

1. A nautical term, which refers to the longitudinal centerline of a ship. 2. In ship construction amidships is in the middle of the length (L).

Ammeter

energy

An ammeter is a measuring instrument used to measure the current in a circuit. Electric currents are measured in amperes (A).

Ammonia

marine

Noxious, pungent gas, extremely soluble in water and alcohol. It is used as a refrigerant. Further Ammonia is used as feed stock in e.g. fertilizer production and several other industries.

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