top-lit updraft gasifier , TLUD (abbreviation)

Rice hulls are easily gasified in top-lit updraft gasifiers.

The first is known as a Top-Lit Updraft Gasifier, which works by placing biomass in a cylinder that is fed air from underneath.

A TLUD gasifier stove is commonly constructed with two concentric cylindrical containers.

A TLUD pyrolyzes organic material, including wood or manure, and uses a reburner to eliminate volatile byproducts of pyrolization.

A ND TLUD gasifier takes it further from a rocket stove in more efficient way of smoke free - highly efficient combustion of the fuel.

A Natural Draft Top-lit gasifier (ND TLUD) is a micro-kiln used to produce charcoal, especially biochar, and heat for cooking.

Dr Thomas B Reed and the Norwegian architect Paal Wendelbo are considered to be the first ones to have come up with the working idea of a Natural Draft ND TLUD gasifier.

Typical gasifier stoves are known as Top Lit Updraft (TLUD) stoves because some fuel is lit on top of the stove, forcing combustible products to pass through the flame front before being emitted into the air.