| 摘要 |
<p>A tunnel fuel burner (10) in which wood pellets/chips (16) may be burned in which longitudinal outer (34) and inner (35) concentric cylindrical housings form a longitudinal annular air preheating chamber (46) for supplying combustion air to a combustion chamber (45) formed by the inner concentric cylindrical housing (35) and in which fuel in the form of wood pellets/chips (16) are supplied to one end of the combustion chamber (45) through an inlet feed nozzle (42) with the wood pellets/chips being preheated by the incoming preheated air and combustion products to drive off moisture and volatile matter preliminary to combustion of the fuel.</p> |
