The air-cooled travelling grate is a robust and cost effective combustion system to pair with the Towerpak boiler.

Travelling grates are commonly used throughout New Zealand on the Towerpak boilers, and are well suited for most purchased biomass fuels such as hogged and chipped fuel.

In a travelling grate, the grate bars continuously move forward to constantly discharge the ash. The model Windsor offer has a hinged bar design which facilitates air flow to the fuel bed. This arrangement also allows the grate bars to “open” at the lower portion of the catenary to discharge ash siftings, which prevents jamming.