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Carbon credit
A carbon credit can be used for trading in the carbon market. One carbon credit consists of one ton of CO2 (or sometimes CO2 equivalent gases).
Carbon offsetting
When you pay someone else to remove the GHGs you emitted into the atmosphere, it’s called carbon offsetting.
Cast iron
Cast iron is an alloy of iron, silicon and carbon.
Cavitation occurs when the pressure of a liquid at a constant temperature falls below its saturated vapour pressure point (or boiling point).
CE marking
The CE mark is the manufacturer’s/importer’s proof that their product meets the requirements stated in the relevant EU Directives and EN standards.
Central heating
The term central heating covers hydronic heating systems with a central boiler or furnace either inside the building being heated or in the immediate vicinity.
CFC (Chlorofluorocarbon)
CFC and HCFC refrigerants are detrimental to the breakdown of the ozone layer and the greenhouse effect. CFC is an abbreviation of chlorofluorocarbon; HCFC is an abbreviation of Hydrochlorofluorocarbon. They describe the molecules’ atom content.
Circuit breaker
A circuit breaker is a device that protects against overcurrent.
Cleaning pig
A cleaning pig is designed to facilitate the removal of sediments in a drain or sewer. It is formed as a cylindrical device with shallow channels on the surface and is propelled through the pipe by the flow.
Climate change
Climate change refers to any change in the climate over time, whether due to natural variability or as a result of human activity.