The local climate of specific place or habitat, as influenced by landscape features.

An electronic device that allows current to flow in one direction only.

A gasifier in which the feedstock (fuel) is suspended by the movement of gas to move it through the gasifier.

A current carrier, either an electron or a hole, that is in the minority in a specific layer of a semiconductor material; the diffusion of minority carriers under the action of the cell junction voltage is the current in a photovoltaic device.

A component of a heat pump that reverses the refrigerant's direction of flow, allowing the heat pump to switch from cooling to heating or heating to cooling.

Any wholly or partially enclosed space in which combustion takes place.

The highest possible pressure in a fuel-air mixture before spontaneous ignition occurs.

The heat produced by combusting a specific quantity and volume of fuel in an oxygen-bomb colorimeter under specific conditions.

Power plants, whose output depends on a factor(s) that cannot be controlled by the power generator because they utilize intermittent resources such as solar energy or the wind.

A vehicle with an engine capable of operating on two different types of fuels.

The vacancy where an electron would normally exist in a solid; behaves like a positively charged particle.

An insulation product made of a fibrous material or plastic foams, pressed or extruded into board-like forms. It provides thermal and acoustical insulation strength with low weight, and coverage with few heat loss paths.

An energy band in a semiconductor in which electrons can move freely in a solid, producing a net transport of charge.

The planting, cultivation, and harvesting of a single species of crop in a specified area.

A type of window having two layers (panes or glazing) of glass separated by an air space. Each layer of glass and surrounding air space reradiates and traps some of the heat that passes through thereby increasing the windows resistance to heat loss (R-val ...

A building element that provides protection against the sun, wind, and precipitation.

Solar radiation reflected from the ground onto a solar collector.

A method of depositing thin semiconductor photovoltaic) films. With this method, physical processes, such as thermal evaporation or bombardment of ions, are used to deposit elemental semiconductor material on a substrate.

That part of an electricity bill that is based on the amount of electrical energy consumed or supplied.

A power plant that uses two thermodynamic cycles to achieve higher overall system efficiency; e.g.: the heat from a gas-fired combustion turbine is used to generate steam for heating or to operate a steam turbine to generate additional electricity.