Masonry oven and the fire won't burn well. Modern masonry ovens sometimes bear little resemblance to their forebears, and can have just a cast deck (similar to a pizza stone) inside a more conventional oven exterior. Such devices are primarily used in commercial settings, though tabletop models are available. Cob is the British name for what is essentially adobe (from Arabic, "al toba," meaning "the mud;" "cob" is the Anglo-Saxon word for "lump," and is also used to describe round loaves of bread, or small, compact horses). As the most common building material on the planet, earth, clay and "cob" construction have
Ceramic heat cell Ceramic heat cell A ceramic heat cell, also known as Caloric Porous Structure Cell (CPSC), is a ceramic device to burn a fuel without flame, converting the thermal energy to mechanical work. In principle any fuel that can be vapourised and pre-mixed with air can be used. "Ultra vaporized steam" replaces the exploding air/fuel mixture as the work medium. The flameless combustion keeps emissions of hydrocarbons, carbon monoxide, and nitrous oxides extremely low. Exhaust gas can be recirculated, which further reduces emissions. A ceramic heat cell made by German firm Enginion is claimed to generate up to 30 megawatts of