WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

L

227 results

Low heat value

marine

Heat content of the fuel with the heat of vaporization excluded. The water vapour is assumed to be in a gaseous state.

LOW LOSS CONCEPT

marine

Traditional diesel-electric propulsion consists of several generating sets and drive syste ms, each consisting of a propulsion transformer, a frequency converter for speed control, an electric motor and a thruster.

Low NOx combustion

marine

Wärtsilä developed combustion process which reduces the NOx emission level in the diesel engine by up to 25-35% without compromising on thermal efficiency.

Low voltage ride through

energy

Low voltage ride through is the capability of electric generators to stay connected in short periods of lower electric network voltage.

Low-carbon economy

energy

A low-carbon economy is an economy based on low-carbon power sources that therefore has a minimal output of greenhouse gas (GHG) emissions into the atmosphere, specifically carbon dioxide.

Low-carbon power

energy

Low-carbon power is electricity produced with substantially lower greenhouse gas emissions than conventional fossil fuel power generation.

Low-cost country sourcing

energy

Low-cost country sourcing is procurement strategy in which a company sources materials from countries with lower labour and production costs in order to cut operating expenses.

Low-energy building

energy

A building that makes use of any of a large number of techniques to lower energy use.

Lower flammable limit (LFL), lower explosive limit

marine

The concentration of a hydrocarbon gas in air below which there is insufficient amount of hydrocarbon to support and propagate combustion. Sometimes referred to as lower explosive limit (LEL).

Low-level waste

energy

LLW includes items that have become contaminated with radioactive material or have become radioactive through exposure to neutron radiation. The radioactivity can range from just above background levels found in nature to very highly radioactive in certain cases such as parts from inside the reactor vessel in a nuclear power plant.

Low-pressure area

energy

In meteorology, a low-pressure area, low area or low is a region where the atmospheric pressure is lower than that of surrounding locations.

Low-voltage network

energy

A low-voltage network or secondary network is a part of electric power distribution which carries electric energy from distribution transformers to electricity meters of end customers.

LPG reliquefaction plant

marine

In a refrigeration cycle, the refrigerant circulates from the evaporator through the compressor to the condenser and back to the evaporator. In the evaporator, the heat added to the refrigerant by boiling off is taken from the surroundings.

LPG tanker

energy

A sea going vessel designed specifically for the transportation of LPG.

LPG tanker CELANOVA

marine

CELANOVA has been built for service around the southern Spanish coasts and the Balearic Islands.

Lubricated friction

energy

Lubricated friction is a case of fluid friction where a lubricant fluid separates two solid surfaces.

Lubricating oil

marine

A high boiling point product of the crude oil refining process, used to lubricate machinery. Various properties required are obtained by blending and the introduction of additives such as oxidation inhibitors, dispersants and detergents.

Lubrication

energy

Lubrication is the process or technique of using a lubricant to reduce friction and wear and tear in a contact between two surfaces.

Luff (to)

marine

To raise or lower a derrick or a crane jib.

Lumber carrier

marine

A ship used for the transportation of lumber (timber) and other wood products.

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