A building that is elongated in the east-west direction, with the majority of the windows on the south side. The area of the windows is generally limited to about 7% of the total floor area. A sun-tempered design has no added thermal mass beyond what is a ...

A room that faces south (in the northern hemisphere), or a small structure attached to the south side of a house.

A type of house that has massive amounts of insulation, airtight construction, and controlled ventilation without sacrificing comfort, health, or aesthetics.

A popular term for highly insulating window with a heat loss so low it performs better than an insulated wall in winter, since the sunlight that it admits is greater than its heat loss over a 24 hour period.

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 ...

The abrupt and large increase in electrical conductivity exhibited by some metals as the temperature approaches absolute zero.

A heat source, such as a space heater, used to provide more heat than that provided by a primary heating source.

The duct(s) of a forced air heating/cooling system through which heated or cooled air is supplied to rooms by the action of the fan of the central heating or cooling unit.

Technologies that pertain to the generation of electricity.

A popular term used for an evaporative cooling device.

In reference to a wind energy conversion device, the area through which the rotor blades spin, as seen when directly facing the center of the rotor blades.

An electrical generator that runs at a constant speed and draws its excitation from a power source external or independent of the load or transmission network it is supplying.

An electrical inverter that inverts direct current electricity to alternating current electricity, and that uses another alternating current source, such as an electric power transmission and distribution network (grid), for voltage and frequency referenc ...

A type of motor designed to operate precisely at the synchronous speed with no slip in the full-load speeds (rpm).

A water heater that heats water before it is directly distributed for end use as required; a demand water heater.

Any light source designed specifically to direct light a task or work performed by a person or machine.

The amount that the voltage, current, and/or power output of a solar cell changes due to a change in the cell temperature.

An index that combines sensible temperature and air humidity to arrive at a number that closely responds to the effective temperature; used to relate temperature and humidity to levels of comfort.

Individual rooms or zones in a building where temperature is controlled separately from other rooms or zones.

A component of a water heating system that opens at a designated temperature or pressure to prevent a possible tank, radiator, or delivery pipe rupture.