### Influence of Uneven Fuel Distribution on A Grate on Gas Flow and Combustion Quality

M. Kiener & T. Nussbaumer
Grate boilers are widely applied for biomass combustion and achieve high combustion quality in good operation conditions. However, uneven fuel distribution such as e.g. uncovered grate sections can occur due to part load operation or changing fuel properties. Uncovered grate sections influence the flow conditions and are assumed to cause increased emissions from incomplete combustion such as carbon monoxide (CO). The objective of this investi¬gation is to analyse the influence of the grate coverage on...