Barrier energy

Symbol, W. Common units: joule, watthour, and kilowatt-hour. 1. The capacity for doing work. Some common forms of energy are electrical, mechanical, and chemical. 2. The work ...

energy

Energy; Energy efficiency

Several different forms of energy exist, for example potential energy, kinetic energy, thermal energy, and electromagnetic energy. Energy is measured in joule (J) or watt-hours ...

energy

Electrical equipment; Fuel cell

In physics and other sciences, energy is a scalar physical quantity that is a property of objects and systems which is conserved by nature. Energy is often defined as the ability ...

dye-sensitised solar cell

Energy; Solar power

A dye-sensitised solar cell is a low-cost thin film solar cell that absorbs light by a sensitizer on the surface of a semiconductor. Then photo-induced electrons are injected from ...

solar energy technologies

Energy; Solar power

Convert solar energy to useful purposes. They can provide: electrical generation by heat engine or photovoltaic means; space heating and cooling in active and passive solar ...

solar hot water

Energy; Solar power

Water heated by the use of solar energy.

solar cell

Energy; Solar power

a solar cell (also called photovoltaic cell or photoelectric cell) is a solid state electrical device that converts the energy of light directly into electricity by the ...

passive solar

Energy; Solar power

Technologies that capture sunlight for heat energy without use of active mechanical systems such as fans or pumps (as contrasted to active solar). Such technologies convert ...

solar power

Energy; Solar power

Also called solar energy, solar power is electricity generated from sunlight, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP). ...