The process of determining energy consumption, by various techniques, of a building or facility.

The space-conditioning load of a building.

The maximum load that a motor is capable of supplying.

An interior wall made of water filled containers for absorbing and storing solar energy.

Discharging a battery to 20 percent or less of its full charge capacity.

A building architectural element (vestibule) with two airtight doors that reduces the amount of air infiltration and exfiltration when the exterior most door is opened.

The conversion of biomass into a gas, by biogasification (see above) or thermal gasification, in which hydrogen is produced from high-temperature gasifying and low-temperature pyrolysis of biomass.

see Air-Source Heat Pump.

The control of the quality, quantity, and temperature-humidity of the air in an interior space.

A slender threadlike spike of pure crystalline material, such as silicon.

To disconnect a transmission and/or distribution line; a power line that is not carrying a current; to open a circuit.

Referring to alterations in the environment due to the presence or activities of humans.

The maximum heat output (in Btu per hour) released by a burner with a stable flame and satisfactory combustion.

A structural, load-carrying building member with an open web system that supports floors and roofs utilizing wood or specific steels and is designed as a simple span member.

A condition that results from an imbalance between the number of protons and the number of electrons in a substance.

A unit of electrical force equal to that amount of electromotive force that will cause a steady current of one ampere to flow through a resistance of one ohm.

A mechanical device used for air circulation and to provide cooling.

Electromagnetic radiation in the wavelength range of 4 to 400 nanometers.

The temperature of a medium, such as gas or liquid, which comes into contact with or surrounds an apparatus or building element.

The interior heat gain due to heat conduction, convection, and radiation from the exterior into the interior, and from occupants and appliances.