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WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

G

178 results

Gas engine

marine

A gas engine is an internal combustion engine which uses blast furnace gas, producer gas, natural gas and others as fuel.

Gas flare

energy

A gas flare, alternatively known as a flare stack, flare boom, ground flare, or flare pit is a gas combustion device used in industrial plants such as petroleum refineries, chemical plants and natural gas processing plants.

Gas free

marine

A tank, compartment or container is gas free when sufficient fresh air has been introduced into it to lower the level of any flammable, toxic, or inert gas to the level required for a specific purpose, e.g. hot work, entry, etc.

Gas freeing

marine

The procedure of removing dangerous and explosive gases from the interior of tanks (usually vapours originating in the cargo of oil tankers and chemical carriers).

Gas indicators

marine

Portable instruments for measuring the concentration of hydrocarbon gas in inerted and non-inerted atmospheres, of other toxic gases and oxygen.

Gas power plants

energy

Power plants use natural gas, the cleanest fossil fuel available. They have lower emissions thereby minimising the environmental impact. Gas power plants can run on natural gas, liquefied natural gas and liquefied petroleum gas.

Gas processing

marine

Separation of oil and gas involving removal of impurities and gas condensate from natural gas.

Gas Reformer

marine

Wärtsilä GasReformer is the solution for utilising gaseous fuels that either contain large amounts of heavier hydrocarbons or vary in their composition.

Gas tanker CLIPPER VIKING

marine

CLIPPER VIKING is an ice-strengthened gas tanker type 2G, designed to carry ethylene, vinyl chloride monomer (VCM), ammonia, propylene oxide, propane, butane and other liquefied gases.

Gas to liquids

energy

A refinery process to convert natural gas or other gaseous hydrocarbons into longer-chain hydrocarbons, such as gasoline or diesel fuel.

Gas treatment

marine

Removal of impurities from natural gas such as water, sulfur compounds and carbon dioxide.

Gas turbine

energy

Also known as a combustion turbine. Fuel is sparayed into compressed air which ignites and causes a high pressure gas flow which drives the turbine impellers.

Gas-cooled reactor

energy

A gas-cooled reactor (GCR) is a nuclear reactor that uses graphite as a neutron moderator and a gas (carbon dioxide or helium in extant designs) as coolant.

Gas-dangerous space, gas dangerous zone

marine

A space not arranged or equipped in an approved manner to ensure that its atmosphere is at all times kept in gas-safe condition. IMO Codes defines many gas-dangerous spaces on board gas carriers, chemical carriers etc.

Gas-Diesel engines

energy

Gas-diesel engines utilise the diesel combustion process in all operational modes.

Gaseous diffusion

energy

Gaseous diffusion is a technology used to produce enriched uranium by forcing gaseous uranium hexafluoride (UF6) through semipermeable membranes.

Gasification

energy

A chemical process that converts a solid fuel into gases.

Gasket

marine

Flexible material used to pack joints in machinery, piping, doors, hatches, etc, to prevent any leakage.

Gasoline

energy

Gasoline or petrol is a transparent, petroleum-derived flammable liquid that is used primarily as a fuel in most spark-ignited internal combustion engines.

Gasoline gallon equivalent

energy

Gasoline gallon equivalent or gasoline-equivalent gallon is the amount of alternative fuel it takes to equal the energy content of one liquid gallon of gasoline.

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