Rocks & mirror

WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

E

371 results

Elastic energy

energy

Elastic energy is the mechanical potential energy stored in the configuration of a material or physical system as it is subjected to elastic deformation by work performed upon it.

Elastic limit, yield point

marine

The maximum stress that can be applied to a metal without plastic deformation.

Elasticity

marine

The structural member capability of sustaining stress without permanent deformation, i.e. to recover its original size and shape after the stress has been removed.

Electric arc

energy

An electric arc, or arc discharge, is an electrical breakdown of a gas that produces a prolonged electrical discharge.

Electric battery

energy

A battery is a device consisting of one or more electrochemical cells with external connections for powering electrical devices such as flashlights, mobile phones, and electric cars

Electric charge

energy

Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.

Electric current

energy

A stream of charged particles, such as electrons or ions, moving through an electrical conductor or space, measured in Amperes.

Electric field

energy

An electric field is the physical field that surrounds each electric charge and exerts force on all other charges in the field, either attracting or repelling them.

Electric grid security

energy

Electric grid security refers to the activities that utilities, regulators, and other stakeholders play in securing the national electricity grid.

Electric heating

energy

Electric heating is a process in which electrical energy is converted to heat energy.

Electric machine

energy

In electrical engineering, electric machine is a general term for machines using electromagnetic forces, such as electric motors, electric generators, and others.

Electric motor

energy

An electrically powered motor used to convert electrical power into mechanical power as used in electrically driven pumps.

Electric motors

marine

The electric motor converts electrical energy to mechanical energy. The most frequently used type of electric motor is the motor powered by an alternating current supply: the AC-motor.

Electric Mountain

energy

A pumped storage hydroelectric power plant in Wales, UK.

Electric network

marine

All equipment and installations connected at the same rated voltage. - Isolated electric network – A system in which a conductor or the neutral is not connected to the ship hull in normal operation.

Electric network with earthed neutral

marine

A system in which the neutral is connected to the ship hull in normal operation.

Electric podded propulsor

marine

Azymuthing electric propulsion unit with the motor located inside the underwater housing (pod) attached to the hull.

Electric potential energy

energy

A potential energy (measured in joules) that results from conservative Coulomb forces and is associated with the configuration of a particular set of point charges within a defined system.

Electric power

energy

The rate, per unit time, at which electrical energy is transferred by an electric circuit.

Electric power conversion

energy

An electrical or electro-mechanical device for converting electrical energy. A power converter can convert alternating current into direct current and vice versa; change the voltage or frequency of the current or do some combination of these.

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