Salt mixtures with potential applications as solar thermal energy storage materials.

To price and sell greenpower/electricity higher than that produced from fossil or nuclear power plants, supposedly because some buyers are willing to pay a premium for greenpower.

A solar heating system that preheats water or air that is then heated more by another heating appliance.

Air that is returned to a heating or cooling appliance from a heated or cooled space.

The unoccupied, and usually unfinished and unconditioned space between the floor, foundation walls, and the slab or ground of a building.

A method of financial and economic analysis used to determine present and future values of investments or expenses.

Thermal energy that is used in agricultural and industrial operations.

The interior area of a building, calculated in square feet or meters.

Air that provides the necessary oxygen for complete, clean combustion and maximum heating value.

The net south-facing glazing area projected on a vertical plane. Also, the solid area covered at any instant by a wind turbine's blades from the perspective of the direction of the windstream (as opposed to the swept area).

The sum of the ratings of the electricity consuming apparatus connected to a generating system.

see Solar Spectrum above.

A body of water that contains brackish (highly saline) water that forms layers of differing salinity (stratifies) that absorb and trap solar energy. Solar ponds can be used to provide heat for industrial or agricultural processes, building heating and coo ...

A coating applied to the surface of the glazing of a window to reduce heat transfer through the window.

Usually refers to ethanol to 160 to 200 proof.

Steam available directly from a boiler under full pressure.

A method used to estimate building heating loads by assuming that heat loss and gain is proportional to the equivalent heat-loss coefficient for the building envelope.

The fossil fuels: coal, oil, and natural gas.

In reference to a wind energy conversion system, the wind speed profile in which wind speeds increase with the logarithmic of the height of the wind turbine above the ground.

A process used to apply photovoltaic semi-conductor material to a substrate by a physical vapor deposition process where high-energy ions are used to bombard elemental sources of semiconductor material, which eject vapors of atoms that are then deposited ...