8. Energy Production Flashcards
Specific energy =
the energy that can be released by each kilogram of a fuel.
Energy density =
the energy that can be released by one cubic metre of a fuel.
Primary energy source =
a source of energy that has not been transformed or converted before use by the consumer.
uranium 235, crude oil, coal, sun, water, wind etc.
Secondary energy source =
an energy source created using a primary source eg electricity.
Renewable energy =
energy generated from renewable resources, which are naturally replenished on a human timescale.
sunlight, wind, rain, tides, waves, and geothermal heat.
Conduction =
the transfer of heat by collisions of particles and movement of electrons within a body
Convection =
the movement of groups of atoms or molecules within fluids that arises through variations in density.
Thermal radiation =
the transfer of energy by means of electromagnetic radiation.
Black body =
a hypothetical body that absorbs and emits all radiation that falls on it.
Intensity =
power emitted per square meter.
Albedo =
the extent to which a particular surface can reflect energy.
Solar constant = .
the total energy reaching one square meter of the Earth’s atmosphere from the sun = 1400Jm-2
