The maximum load that a motor is capable of supplying.

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.

The process or technologies for producing energy by harnessing the temperature differences (thermal gradients) between ocean surface waters and that of ocean depths. Warm surface water is pumped through an evaporator containing a working fluid in a closed ...

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

Consist of three main layers. The top layer is near ambient and has low salt content. The bottom layer is hot, typically 160 F to 212 F (71 C to 100 C), and is very salty. The important gradient zone separates these zones. The gradient zone acts as a tran ...

A unit of power equal to 1 billion Watts; 1 million kilowatts, or 1,000 Megawatts.

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

A measure of the heating requirements of a building expressed in Btu per degree-day.

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

The use of direct, diffuse, or reflected sunlight to provide supplemental lighting for building interiors.

The amount of power a wind turbine can produce at its rated wind speed, e.g., 100 kW at 20 mph. The rated wind speed generally corresponds to the point at which the conversion efficiency is near its maximum. Because of the variability of the wind, the amo ...

The negative pole or electrode of an electrolytic cell, vacuum tube, etc., where electrons enter (current leaves) the system; the opposite of an anode.

A device that cuts off the flow of hot or cold air to or from a room as controlled by a thermostat.

An apparatus for converting the energy available in the wind to mechanical energy that can be used to power machinery (grain mills, water pumps) and to operate an electrical generator.

An insulation product composed of loose fibers or fiber pellets that are blown into building cavities or attics using special pneumatic equipment.

Energy systems supply individual, or small-groups, of energy loads.

The purpose for which useful energy or work is consumed.

Biomass converted directly to energy or converted to liquid or gaseous fuels such as ethanol, methanol, methane, and hydrogen.

A colorless, pungent, gas (NH3) that is extremely soluble in water, may be used as a refrigerant; a fixed nitrogen form suitable as fertilizer.

Heat stored above room temperature (in a solar heating system).