<p>A nozzle arrangement includes a chamber (204) having a plurality of divergent inlet orifices (203) which are directed towards opposed walls (205) or sidewalls (206) of the chamber (204). The chamber (204) is further provided with a plurality of outlet orifices (102) which are not aligned with the inlet orifices (203) and in the preferred embodiment also constitute outlet orifices of the nozzle arrangement.</p>
