WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

K

27 results

KAPPEL propeller

marine

A new screw propeller with higher efficiency than a conventional state-of-the-art propeller.

Keel

marine

The principal fore-and-aft component of ship framing, located along the centreline of the bottom and connected to the stem and stern frames.

Keel blocks

marine

Heavy wooden or concrete blocks on which ship rests during construction or repair.

Kelly

marine

A long hollow, square section forging which screws into the top section of a drill pipe. It is driven by the rotary table and provides the drill pipe with both rotational movement and drilling mud, drilling fluid.

Kelvin

energy

The kelvin is the base unit of temperature in the International System of Units (SI), having the unit symbol K.

Key

marine

A machined metal bar which is used to connect a component to a shaft.

Keyless fitting of fixed pitch propeller

marine

Keyless bore propellers are press fitted on the shaft cone. Oil is injected under pressure between the bore and the shaft by means of pumps feeding a system of grooves in the propeller bore.

Keyway

marine

The groove or slot in which a key fits. It must be carefully designed to avoid weakening of the shaft or creating an area of stress concentration.

Kill switch

energy

A kill switch, also known as an emergency stop, emergency off and as an emergency power off, is a safety mechanism used to shut off machinery in an emergency, when it cannot be shut down in the usual manner.

Kilogram

energy

The kilogram is the base unit of mass in the International System of Units (SI).

Kilogram-force per square centimetre

energy

A kilogram-force per centimetre square (kgf/cm2), often just kilogram per square centimetre (kg/cm2), or kilopond per centimetre square is a deprecated unit of pressure using metric units.

Kilowatt (kW)

energy

A unit of power equivalent to 1,000 watts.

Kilowatt hour (Kwh)

energy

The measure of kilowatts used continuously for 1 hour.

Kinematic viscosity

marine

The absolute viscosity of a fluid divided by its density at the temperature of viscosity measurement.

Kinetic energy

energy

In physics, the kinetic energy of an object is the energy that it possesses due to its motion.

Kinetic friction

energy

Kinetic friction is the friction between moving surfaces.

Kingston valve

marine

A conical valve, opening outward, to close the mouth of a pipe which passes through the side of a vessel below the water line.

Kirchhoff's circuit laws

energy

Kirchhoff's circuit laws are two equalities that deal with the current and potential difference (commonly known as voltage) in the lumped element model of electrical circuits.

Kite

energy

A kite is a tethered heavier-than-air or lighter-than-air craft with wing surfaces that react against the air to create lift and drag forces.

Knock resistance

energy

The ability of a fuel or fuel/air mixture to prevent engine knocking. Fuel octane rating can be

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