A coil of tungsten wire suspended in a vacuum or inert gas-filled bulb. When heated by electricity the tungsten "filament" glows.

A WECS designed to produce electricity.

A solar energy conversion device that uses a trough covered with a highly reflective surface to focus sunlight onto a linear absorber containing a working fluid that can be used for medium temperature space or process heat or to operate a steam turbine fo ...

This compound of nitrogen and oxygen is formed by the oxidation of nitric oxide (NO) which is produced by the combustion of solid fuels.

A wood or gas burning appliance that is primarily used to provide ambiance to a room. Conventional, masonry fireplaces without energy saving features, often take more heat from a space than they put into it.

A wood-burning appliance for space and/or water heating and/or cooking.

A passive solar heating system in which the sun warms a heat storage element, and the heat is distributed to the interior space by convection, conduction, and radiation.

Equal to gross generation less electricity consumption of a power plant.

The process of the absorption of heat from one location and its transfer to another for rejection or recuperation.

Both a noun and a verb to describe the exterior surface of building elements (walls, floors, ceilings, etc.) and furniture, and the process of applying it.

The heat that flows from the building interior, through the building envelope to the outside environment.

A measure of the amount of energy lost during the generation, transmission, and distribution of electricity.

In alternating current, the current goes from zero potential or voltage to a maximum in one direction, back to zero, and then to a maximum potential or voltage in the other direction. The number of complete cycles per second determines the current frequen ...

Any device (or plant) that follows the sun's apparent movement across the sky.

The process by which materials expel or release gasses.

The transmission of electricity through power lines.

These lights use an electrically heated filament to produce light in a vacuum or inert gas-filled bulb.

The rate at which electricity is delivered to or by a system, part of a system, or piece of equipment expressed in kilowatts, kilovoltamperes, or other suitable unit, at a given instant or averaged over a specified period of time.

The ratio of the percentage change in the quantity of a good or service demanded to the percentage change in the price.

A gas or liquid used to move heat energy from one place to another; a refrigerant.