De quoi est fait chaudière
A vessel in which water turns into steam under pressure.
- Safety valve — a pour partie. A mandatory safeguard for boilers.
- Manometer — a pour partie. The gauge on a boiler shows the steam pressure — without it the boiler could explode.
- Combustion — utilise. The firebox heats the water.
- Latent heat — utilise. Evaporation needs latent heat.
- Cuivre — est fait de. Early boilers were copper.
- Wrought iron — est fait de. Later — made of sheet wrought iron.