Traditional combustion furnaces and electric heaters can never exceed 100% efficiency. They are also common in a variety of household gas furnaces and boilers. Sizing is necessary for different types of stoves and furnaces. Floor plans may also include details of fixtures like sinks, water heaters, furnaces, etc. Floor plans will also include details of fixtures like sinks, water heaters, furnaces, etc. Bronze or brass foundries use crucible furnaces or induction furnaces. This type of insulation is usually used in industrial furnaces and foundries. Red lamps were used to simulate blast furnaces and locomotive fireboxes. The Cowper stove is still used in today's blast furnaces. The roasting process is generally undertaken in combination with reverberatory furnaces. Insulation for high-temperature furnaces is often manufactured from aluminium oxide. Smaller scale furnaces for specialty glasses include electric melters, pot furnaces, and day tanks. It's got furnaces, fires and steam. Cast-iron pots were made at many English blast furnaces at the time. This geometry may be used in solar furnaces and solar power plants.