Modern wood burners are a new take on conventional wood burning stoves used to warm up your house. New designs of modern wood burner are excellent at burning bio fuel (made from wood materials) and wood fuels efficiently. Modern wood burners are usually built from a solid metal fire chamber along with a metal grate and a variable air flow. The modern wood burners are then affixed to a flue system or chimney that draws the combustion gases into the firebox.
Usually these types of modern burners comprise of a solid metal (generally steel or cast iron) closed fire chamber, a grate and a variable air flow. The modern wood burner is then joined to an appropriate flue or chimney which is then pervaded with searing combustion gases once the wood or bio fuel is alight. The gases in the chimney or flue must be a higher temperature than the surrounding temperature around the chimney; otherwise this can have the effect of drawing the combustion gases from the fire chamber up the chimney or flue.