A measure of the efficiency of an appliance's energy efficiency.

Not Required.

A house built into the ground or slope of a hill, or which has most or all exterior surfaces covered with earth.

A situation where the exercise price of a call/put option approximates to the current market price.

On square-rigged ships, the blocks attached to those yards on which studdingsails were set.

A floating island of ice. Only one-ninth of the total mass of an iceberg is visible above water level.

In sailing, to be lifted by a wind shift that allows your boat to be lifted closer to the wind where by it allows you to sail a shorter distance to the next mark, buoy or finish line

See standard atmosphere.

The practice of using a single meter to measure consumption and generation of electricity by a small generation facility (such as a house with a wind or solar photovoltaic system). The net energy produced or consumed is purchased from or sold to the gener ...

Sailing with the tiller over to leeward by force of the wind

The array of indicating marks and figure in relation to which the position of an index is observed, i.e. a scale plate on a recorder.

That part of a shaft or axle that rotates or angularly oscillates in or against a bearing or about which a bearing rotates or angularly oscillates.

Project IDentification.

A refined petroleum product suitable for use as a fuel in internal combustion engines.

The state of the atmosphere, mainly with respect to its effects upon life and human activities. As distinguished from climate, weather consists of the short-term (minutes to months) variations of the atmosphere.

An idealized process in which a working fluid (water, air, ammonia, etc) successively changes its state (from a liquid to a gas and back to a liquid) for the purpose of producing useful work or energy, or transferring energy.

Melaks and Dumai Service

Finite Element Analysis.

The ratio of a photovoltaic cell's actual power to its power if both current and voltage were at their maxima. A key characteristic in evaluating cell performance.

A water heater that heats water before it is directly distributed for end use as required; a demand water heater.