WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

G

178 results

Ground or Earth

energy

Ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the earth.

Ground source heat pump

energy

A heat pump system that uses the ground as a heat source and/or heat sink.

Ground-coupled heat exchanger

energy

A ground-coupled heat exchanger is an underground heat exchanger that can capture heat from and/or dissipate heat to the ground.

Grounded

marine

Connected to earth, or an extended conducting body, e.g. the hull of a ship, which acts as an earth.

Grounding

marine

The term used when a vessel runs aground in an area where groundings are so common that the insurer of the ship considers it should not be deemed stranding.

Grounding transformer

energy

A grounding transformer or earthing transformer is a type of auxiliary transformer used in three-phase electric power systems to provide a ground path to either an ungrounded wye or a delta-connected system.

Groundwater

energy

Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in the fractures of rock formations.

Groundwater pollution

energy

Groundwater pollution (also called groundwater contamination) occurs when pollutants are released to the ground and make their way down into groundwater.

Grout

energy

A material used during the grouting process specifically designed to form a hydraulic barrier in a geothermal borehole to promote transfer between the ground sorce heat exchanger piping and the earth.

Grouting

energy

The practice of making a conscious effort to form a hydraulic barrier in a geothermal borehole to protect the integrity of the deep earth environment.

Growler (electrical device)

energy

A growler is an electrical device used for testing insulation of a motor for shorted coils.

GTL

energy

Gas to Liquids

Gudgeon

marine

Bosses or lugs on sternpost drilled for the pins (pintles) on which the rudder hinges.

Gunwale

marine

The junction of deck and shell at top of sheer strake.

Gusset

marine

A triangular plate, usually fitted to distribute forces at a strength connection between two structural members.

Guy-wire

energy

A guy-wire, guy-line, or guy-rope, also known as simply a guy, is a tensioned cable designed to add stability to a free-standing structure.

Gymnasium

marine

A special hall or room that has equipment for doing physical exercises.

Gyroscope

energy

A device used for measuring or maintaining orientation and angular velocity, used in positioning for offshore wind turbines.

1 2 3 4 5 6 7 8 9
Download the Encyclopedia