An electromagnetic ballast that disconnects a lamp's electrode heating circuit once is has started; often called "low frequency electronic" ballasts.

A solid fuel produced by shredding municipal solid waste (MSW). Noncombustible materials such as glass and metals are generally removed prior to making RDF. The residual material is sold as-is or compressed into pellets, bricks, or logs. RDF processing fa ...

A reserve appliance; for example, a standby generator for a home or commercial building.

Primitive plants, usually aquatic, capable of synthesizing their own food by photosynthesis.

A method of growing large size, high quality semiconductor crystal by slowly lifting a seed crystal from a molten bath of the material under careful cooling conditions.

Abbreviation for the American Society of Heating, Refrigeration, and Air-Conditioning Engineers.

A measure of the electrical charge of a capacitor consisting of two plates separated by an insulating material.

The water that is forced into a boiler to take the place of that which is evaporated in the generation of steam.

The air external to a building or device.

A passive or mechanical device used to ventilate an attic space, primarily to reduce heat buildup and moisture condensation.

The illuminating power of a standard candle employed as a unit for determining the illuminating quality of an illuminant.

A system that records the consumption of electricity, gas, water, etc, and sends the data to a central data accumulation device.

A wall usually about 3 to 4 feet high located that is placed in the attic of a home, anchored with plates between the attic floor joists and the roof joist. Sheathing can be attached to these walls to enclose an attic space.

In heating and cooling system distribution ductwork, the transformation pieces connecting horizontal round leaders to vertical rectangular stacks.

The amount of electromotive force, measured in volts, that exists between two points.

An air pollution control device that removes organic contaminants by oxidizing them into carbon dioxide and water through a chemical reaction using a catalysis, which is a substance that increases (or decreases) the rate of a chemical reaction without bei ...

A device for converting one form of energy or fuel into useful energy or work.

An electrical conductor that serves as a common connection for two or more electrical circuits; may be in the form of rigid bars or stranded conductors or cables.

A region of transition between semiconductor layers, such as a p/n junction, which goes from a region that has a high concentration of acceptors (p-type) to one that has a high concentration of donors (n-type).

The ratio of the average load on (or power output of) a generating unit or system to the capacity rating of the unit or system over a specified period of time.