A wall to prevent the spread of fire; usually made of non-combustible material.

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 ...

The process by which materials expel or release gasses.

The process of cooling by which a heat absorbing media absorbs heat from one source and radiates the heat away.

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

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 maximum instantaneous wind speed (or velocity) that occurs within a specific period of time or interval.

A registered trademark of an agency of the state of Nebraska, for an automotive fuel containing a blend of 10 percent ethanol and 90 percent gasoline.

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.

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

An electricity powered device that extracts available heat from one area (the heat source) and transfers it to another (the heat sink) to either heat or cool an interior space or to extract heat energy from a fluid.

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

The process of characterizing the wind resource, and its energy potential, for a specific site or geographical area.

The price paid for goods or services at the time of a transaction; a price that has not been adjusted to account for inflation.

A heating system that uses only outside air for combustion and vents combustion gases directly to the outdoors. These systems are less likely to backdraft and to negatively affect indoor air quality.

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.

The transmission of electricity through power lines.

This designates the resistance of a material to heat conduction. The greater the R-value the larger the number.

One thousand kilowatts, or 1 million watts; standard measure of electric power plant generating capacity.

A configuration of an electrical circuit in which the voltage is the same across the terminals. The positive reference direction for each resistor current is down through the resistor with the same voltage across each resistor.