English Glossary


02.06.2017

Browse the glossary using this index

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A

A

Weibull scale parameter

A-CAES

adiabatic compressed air energy storage

a-si

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

absorber

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

AC

alternating current

ACCF

Africa Climate Change Fund

accumulator

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

acetogenesis

(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).

ACH

air changes per hour

acid

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

acidogenesis

(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.

AD

anaerobic digestion

ADB

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.


adiabatic

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.

AF

Adaptation Fund


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