The structural materials and elements used to construct a wall.

A region of electrical contact between two different materials.

A device for converting the flow of a fluid (air, steam, water, or hot gases) into mechanical motion.

This represents three layers of glazing in a window with an airspace between the middle glass and the exterior and interior panes.

An electromagnetic device that changes the voltage of alternating current electricity. It consists of an induction coil having a primary and secondary winding and a closed iron core.

The direction, at any point on the earth that is geographically in the northern hemisphere, facing toward the South Pole of the earth. Essentially a line extending from the point on the horizon to the highest point that the sun reaches on any day (solar n ...

The load-carrying ability of an electric power plant during a specific time interval and period when related to the characteristics of the load to be/being supplied; determined by capability, operating power factor, and the portion of the load the station ...

The power available from the rise and fall of ocean tides. A tidal power plant works on the principal of a dam or barrage that captures water in a basin at the peak of a tidal flow, then directs the water through a hydroelectric turbine as the tide ebbs.

An approximate unit of heat produced by a resting person, equal to about 18.5 Btu per square foot per hour.

The shape of the phase power at a certain frequency and amplitude.

A device used to protect the user of any electrical system or appliance from shock.

A tank used in a closed-loop solar heating system that provides space for the expansion of the heat transfer fluid in the pressurized collector loop.

SMES technology uses the superconducting characteristics of low-temperature materials to produce intense magnetic fields to store energy. SMES has been proposed as a storage option to support large-scale use of photovoltaics and wind as a means to smooth ...

A mixture of substances that has a melting point lower than that of any mixture of the same substances in other proportions.

A type of solar thermal collector where the heat transfer fluid flows through tubes formed in the absorber plate.

A term used for lighting appliances; the ratio of lumens received on a flat surface to the light output, in lumens, from a lamp; used to evaluate the effectiveness of luminaries in delivering light.

To send electricity through a electricity transmission and distribution network; a conductor or power line that is carrying current.

The sum of the sensible and latent heat in a substance or fluid above a base point, usually 32 degrees Fahrenheit.

An architectural feature used to shade exterior walls; usually made of a lattice of metal or wood; often covered by vines to provide additional summertime shading.

A type of insulation made from virgin basalt, an igneous rock, and spun into loose fill or a batt. It is fire resistant and helps with soundproofing.