To allow or augment the natural movement of cooler air from exterior, shaded areas of a building through or around a building.

Power generation equipment or system capacity to meet peak power demands.

As time increases from zero at the terminals of an inductor, the voltage comes to a particular value on the sine function curve ahead of the current. The voltage reaches its negative peak exactly 90 degrees before the current reaches its negative peak thu ...

A hydrogen production process that process uses algae. Under certain conditions, the pigments in certain types of algae absorb solar energy. An enzyme in the cell acts as a catalyst to split water molecules. Some of the bacteria produces hydrogen after th ...

A construction material made by compressing earth in a form; used traditionally in many areas of the world and widely throughout North Africa and the Middle East.

This device can automatically turn the heater off at night and on in the morning.

A characteristic applied to domestic water heaters that is the amount of gallons raised 100 degrees Fahrenheit per hour (or minute) under a specified thermal efficiency.

Energy conversion technologies that harness the energy in tides, waves, and thermal gradients in the oceans.

The conversion of heat into electricity by the use of thermocouples.

The component of a central receiver solar thermal system where reflected solar energy is absorbed and converted to thermal energy.

A type of incandescent lamp that contains a halogen gas in the bulb, which reduces the filament evaporation rate increasing the lamp life. The high operating temperature and need for special fixtures limits their use to commercial applications and for use ...

A ratio of the work or useful energy output of a system versus the amount of work or energy inputted into the system as determined by using the same energy equivalents for energy in and out. Is used as a measure of the steady state performance or energy e ...

The pressure equivalent of the velocity of a fluid.

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.

The supportive structure of a building.

The process of converting materials that are no longer useful as designed or intended into a new product.

The process of moving existing loads to off-peak periods.

Costs that are repetitive and occur when an organization produces similar goods or services on a continuing basis.

A safety device consisting of a short length of relatively fine wire, mounted in a holder or contained in a cartridge and connected as part of an electrical circuit. If the circuit source current exceeds a predetermined value, the fuse wire melts (i.e. th ...

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 ...