4. Glossary

Gas accumulator

This is a water heater with a tank heated by a built-in gas burner.

Accumulation

This process consists of building up a reserve of domestic hot water, which is stored in the storage tank.

Bacteria

Bacteria are unicellular micro-organisms. Unlike viruses, they are able to reproduce by cell division, with one mother cell producing two daughter cells.

Storage tank

A storage tank is a hot water reservoir enclosed in thermal insulation that stores hot water for delivery to a sanitary or heating system. The storage tank can be heated directly by an electric resistance. The advantage of the storage tank is that it stores the heat produced at night during off-peak periods.

Domestic...