English Glossary

Since 02.06.2017

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Weibull scale parameter


adiabatic compressed air energy storage


Amorphous silicon, a thin film PV module semi-conductor material


The part of the solar thermal collector which absorbs solar radiation

absorption air vent

A device which releases air, but not fluid, out of a system by absorption

abstraction licence

A licence granted by the local environmental authority which permits a certain amount of water to be taken from a stream


alternating current


Africa Climate Change Fund


An apparatus by means of which energy can be stored, such as a rechargeable battery.


(bio.) The third step of anaerobic digestion. Products from fermentation (organic acids, alcohols) are converted into hydrogen (H2), carbon dioxide (CO2) and acetic acid (CH3COOH).


air changes per hour


Traditionally considered any chemical compound that, when dissolved in water, gives a solution with a pH less than 7.0.


(bio.) During acidogenesis the hydrolysis products which are relatively small, soluble compounds are diffused inside the bacterial cells through the cell membrane and then are either fermented or anaerobically oxidized. These processes occur by a complex consortium of hydrolytic and non-hydrolytic microorganisms which are the source of energy for the acidifying population.

active power

The power (in watts) used by a device to produce useful work. Term used when necessary to distinguish between apparent power, complex power and its components, and active and reactive power. Also called input power.


anaerobic digestion


Asian Development Bank

additional insured

Any entity, other than the insurance policy holder, that receives certain contractual benefits of an ԩnsuredԠunder the policy. To benefit from such status, the entity has to be named in the insurance policy.


A process in which there is no energy added or subtracted from a system by heating or cooling.

adiabatic compressed air energy storage

Compressed air energy storage is a method of storing energy generated at one time for use at another time, using compressed air. Adiabatic compressed air storage continues to keep the heat produced by compression and returns it to the air when the air is expanded to generate power.


Adaptation Fund

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