WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

A

303 results

### Angle of Attack

energy

In aerodynamics, angle of attack specifies the angle between the chord line of a foil and the vector representing the relative motion between the foil and the atmosphere.

### Angle of entrance

marine

The angle formed by the centerline of the vessel and the tangent to the design waterline at the forward perpendicular.

### Angle of flooding

marine

Downflooding angle related to intact stability is the angle of heel at which the lower edge of openings in the hull, superstructures or deckhouses that cannot be closed weathertight immerse.

### Angle of heel, heel

marine

A steady angle of heel created by an external force, such as wind or waves.

### Angle of list, list

marine

A steady angle of heel created by forces within the ship. For example, when the ship is inclined due to her asymmetric construction, or by shifting a weight transversely within the ship. The list reduces of ship’s stability.

### Angle of loll

marine

The angle at which a ship with a negative initial metacentric height will lie at rest in still water. In a seaway, such a ship will oscillate between the angle of loll on SB and the one on PS.

### Angle of repose

marine

The angle between the horizontal line and the side of the cone formed when the granular materials as grain, coal, sand or ores are poured onto a flat surface. The angle of repose of most grain loads...

### Anisotropy energy

energy

Anisotropic energy is energy that is directionally specific.

### Annealing

marine

The type of steel heat treatment. The steel is heated to around 850-950°C and then is cooled slowly either in a furnace or in an insulated space. Softer, more ductile steel that that in the normalised condition is produced.

### Annual Efficiency Ratio (AER)

marine

Annual Efficiency Ratio: “AER”, a carbon intensity metric calculated in accordance with Poseidon Principles.

energy

Defined to be the difference between the annual amount of heat rejected to the ground heat exchanger in the cooling mode and the annual amount of heat extracted from the ground heat exchanger in the heating mode.

### Annualized geo solar

energy

Annualized geo-solar enables passive solar heating in even cold, foggy north temperate areas.

### Annunciation

marine

An audible signal indicating a condition or system state (usually of an emergency or abnormal nature).

### Anode

energy

An anode is an electrode through which the conventional current enters into a polarized electrical device.

### Anthracite

energy

Anthracite, also known as hard coal, is a hard, compact variety of coal that has a submetallic luster.

### Anthropocene

energy

The Anthropocene is a proposed geological epoch dating from the commencement of significant human impact on Earth's geology and ecosystems, including, but not limited to, anthropogenic climate change.

### Anti environmentalism

energy

Anti-environmentalism is a movement that favors loose environmental regulation in favor of economic benefits and opposes strict environmental regulation aimed at preserving nature and the planet.

### Anti nuclear movement

energy

The anti-nuclear movement is a social movement that opposes various nuclear technologies.

### Anti-exposure suit

marine

Anti-exposure suits are similar to immersion suits, but there are a few differences. They must provide at least 70 Newtons of buoyancy and be made of material that reduces the risk of heat stress during rescue and evacuation operations.

### Anti-fouling paint

marine

A paint containing agents for preventing the adhesion and growth of organisms on the hull.