Abstract: A pre-ignition conduit for a pulverized fuel nozzle includes a duct having first and second opposing end portions, the first end portion configured to face an outlet of an igniter. The conduit further includes a cone-shaped concentrator for collecting and forwarding pulverized fuel into the duct for ignition, the cone-shaped concentrator being secured to the first end portion and located between the outlet of the igniter and the duct. The pre-ignition conduit functions as an ignition chamber within a pulverized fuel nozzle.

Abstract: A pre-ignition conduit for a pulverized fuel nozzle includes a duct having first and second opposing end portions, the first end portion configured to face an outlet of an igniter. The conduit further includes a cone-shaped concentrator for collecting and forwarding pulverized fuel into the duct for ignition, the cone-shaped concentrator being secured to the first end portion and located between the outlet of the igniter and the duct. The pre-ignition conduit functions as an ignition chamber within a pulverized fuel nozzle.

Abstract: The invention relates to a solar collector for focusing solar radiation onto a focal line, said solar collector comprising a carrier for a grooved, arched reflector. According to the invention, the carrier comprises a plurality of molded grooves which each have a parabolic lateral edge; the molded grooves are surrounded by an outer film; the reflector consists of an elastic reflector material; and the form of the reflector is impressed on the elastic reflector material, directly or by inserting a carrier, by means of the parabolic lateral edge.