Rocks & mirror

WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

D

348 results

Design controls

energy

Design controls designates the application of a formal methodology to the conduct of product development activities.

Design depth of the underwater unit

marine

The depth in meters (feet) of water equivalent to the maximum pressure which the underwater unit is designed for and approved to operate, measured to the lowest part of the unit.

Design internal pressure of the hyperbaric chamber

marine

The maximum pressure which the hyperbaric chamber is designed for and approved to operate.

Design loads

energy

The peak heating or cooling load used to select the equipment for a system (such as a heat pump) and to design the air distribution system (supply air diffusers, return air grilles, and the duct system).

Design loop temperatures

energy

Temperatures that the ground loop is designed to stay above during the heating mode and below during cooling mode.

Design mission time

marine

The maximum effective recharging interval for life support, compressed air and electrical systems which the underwater vehicle or hyperbaric chamber is designed for and approved to perform the intended function under normal operating conditions.

Design outdoor temperature

energy

Outdoor air temperatures that coincides with the peak seasonal heating or cooling load.

Design pressure of a piping system

marine

The pressure which each piping system element is designed for.

Design review

energy

A design review is a milestone within a product development process whereby a design is evaluated against its requirements in order to verify the outcomes of previous activities and identify issues before committing to - and if need to be re-prioritise - further work.

Design temperature of a piping system

marine

The maximum temperature which each piping component is designed to operate at.

Design temperature, Summer

energy

A specific temperature used in calculating the cooling load of a building.

Design temperature, Winter

energy

A specific temperature used in calculating the heating load of a building.

Despatch days

marine

The days saved by loading or discharging quicker than stated in the charter party. The charterer may seek compensation if a provision exists to this effect.

Destination

marine

Port that a vessel is bound for.

Destructive distillation

energy

Destructive distillation is a chemical process in which decomposition of unprocessed material is achieved by heating it to a high temperature. The process breaks up or 'cracks' large molecules.

Desulfurisation

energy

A chemical process for the removal of sulfur from a material.

Desulphurization

marine

The removal of sulphur and sulphur compounds from gases or petroleum liquids.

Desuperheater

energy

A device for recovering superheat from the compressor discharge gas of a heat pump or central air conditioner for use in heating or preheating water.

Detection

marine

The determination of the location of survivors or survival craft, (SOLAS , Chapter III). See also Lifesaving.

Deuterium

energy

Deuterium (also known as heavy hydrogen) is a stable isotope of hydrogen.

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