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

The load created by moisture in the air, including from outside air infiltration and that from indoor sources such as occupants, plants, cooking, showering, etc.

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

This law states that no device can completely and continuously transform all of the energy supplied to it into useful energy.

The complete cycle of stages (evaporation and condensation) of refrigeration or of the refrigerant.

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 ...

These fluids can be either water or steam trapped in fractured or porous rocks; they are found from several hundred feet to several miles below the Earth's surface. The temperatures vary from about 90 F to 680 F (32 C to 360 C) but roughly 2/3 range in te ...

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.

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

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

The supportive structure of a building.

A method of depositing thin semiconductor films used to make certain types of solar photovoltaic devices. With this method, a substrate is exposed to one or more vaporized compounds, one or more of which contain desirable constituents. A chemical reaction ...

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

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 ...

Caulking and weatherstripping to reduce air infiltration and exfiltration into/out of a building.

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

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

The inherent characteristic of a material to inhibit the transfer of energy. In electrical conductors, electrical resistance results in the generation of heat. Electrical resistance is measured in Ohms. The heat transfer resistance properties of insulatio ...