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29. Glossary
Ampere (A): SI unit of measurement of electric current
bar: unit of pressure equal to exactly 100,000 Pa. This pressure is very close to
standard atmospheric pressure.
cal(Calorie): equal to the amount of heat required to increase the temperature of
one gram of water by one degree centigrade.
cm (centimetres): unit of measurement.
CO (carbon monoxide): Lightly flammable, colourless, odourless and very
dangerous gas, due to its toxicity.
CO2 (carbon dioxide): Gas needed by plants for photosynthesis on the one hand,
and emitted into the atmosphere on the other, contributing to the greenhouse
effect.
Combustion: a process for obtaining energy. Combustion is basically a chemical
reaction that requires three items in order to take place: fuel, oxidant and ignition
temperature.
Oxidiser: chemical substance used for combustion (essentially oxygen) which is
required for it to take place.
Combustible: anything that can undergo combustion, in this case referring to
wood.
Creosote: chemical compound created by combustion. This compound is
sometimes deposited on the glass and shaft of the heating recovery unit.
Circuit breaker: Electromechanical device that protects a given electrical
appliance.
Energy Efficiency: capacity to generate large quantities of heat with the least
amount of energy possible, causing the least environmental impact and reducing
the energy budget.
CO Emissions: emission of carbon monoxide gas into the atmosphere.
CO emissions (13% of O2): carbon monoxide content corrected to 13% of O
2
.
Differential Switch: protects people and property against grounding failures,
preventing electric shocks and fires.
kcal (Kilocalorie): multiple unit of measurement of calories. Equivalent to 1000
calories.
kW (Kilowatt): Unit of measurement equal to 1000 watts.