Abstract: The invention relates to a particulate filter comprising a monolithic filter body (10) with inflow channels (12) and outflow channels (13) that run at an angle to said inflow channels. Each inflow channel is separated from the outflow channels by at least one filter wall. The inflow channels (12) run in a linear manner into a chamber (17), in which the ash collects. The purified gases exit the particulate filter via an outlet (21).

Abstract: The invention relates to an absorber designed to absorb radiation and to transfer the energy of the radiation to a heat transport medium. To provide an absorber with high efficiency, the absorber according to the invention comprises a plurality of absorber components (32) attached to each other and having passages (42) formed therein for absorption of radiation and for suctional intake of a heat transport medium. Each absorber component (32) is provided with a dedicated mixing chamber (44) having said passages (42) of said absorber component (32) entering thereinto and comprising flow-restricting outlet orifices for connection to a suction means.