English Glossary

Since 02.06.2017

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C

chemical vapour deposition

A chemical process which produces a vapour of a material which is then deposited in a thin layer onto a surface

chips

Woody material cut into short, thin wafers. Chips are used as a raw material for pulping and fibreboard or as biomass fuel.

chopper

Braking resistor in the DC link of converter systems.

CHP

combined heat and power generation

CI(G)S

copper indium (gallium) diselenide

CIF

Climate Investment Fund

circuit breakers

This is an automatically operated electrical switch/disconnect designed to protect an electrical circuit from damage caused by overload or short circuit.

claim

Used in reference to insurance, a claim may be a demand by an individual or corporation to recover, under a policy of insurance, for loss that may come within that policy.

clause

A section of a policy contract, or of an endorsement attached to it, dealing with a particular subject in the contract, for example, the "insuring clause" or the "coinsurance clause."

clean development mechanism

One of the Flexible Mechanisms defined in the Kyoto Protocol (IPCC, 2007) that provides for emissions reduction projects which generate Certified Emission Reduction units which may be traded in emissions trading schemes

clearness index

The clearness index Kt is defined as the ratio of the horizontal global irradiance to the corresponding irradiance available out of the atmosphere (i.e. the extraterrestrial irradiance multiplied by the sinus of the sun height).

CLFR

compact linear Fresnel reflector

CMS

Condition Monitoring System

co-firing

Combustion of more than one substrate at the same time

co-generation

See 'combined heat and power generation' (CHP).

CO2

carbon dioxide

CO2-equivalents

A unit used to standardize measurements of radiative forcing. For example, ton for ton, the 'greenhouse effect' of methane is a greenhouse gas that is 21 times more powerful than carbon dioxide. Therefore 1 ton of methane represents 21 tons of CO2 equivalents.

COC

Certificate of Compliance

COD

commercial operation date

coefficient of performance

The coefficient of performance or COP (sometimes CP) of a heat pump is the ratio of heating or cooling provided by the heat pump to the electrical energy consumed by the heat pump. Higher COPs equate to lower operating costs. The term is also used in refrigeration and air-conditioning trechnology.

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