Ceiling radiation heater and methods of operating same

Claim 1

Ceiling radiation heater, in particular for halls, having a plurality of hot air radiation pipes arranged at a short distance from the ceiling in one or several planes longitudinally parallel and combined in groups, disposed either directly adjacent or at a distance necessitated by the pipe supports, with an upper reflector arranged above the pipes and lateral reflectors arranged laterally about the pipes with at least one thermally insulating layer arranged on the upper reflector, with the lateral reflectors arranged closely next to the pipes optionally projecting by a short distance below the pipes, wherein waste gases generated in at least one burner by the combustion of liquid gas, natural gas or city gas are introduced into the pipes which are air-filled, and from a closed pipe system, characterized in that the thermally insulating layer rests on the pipes, with sides of said thermally insulating layer carrying the lateral reflectors, that said thermally insulating layer being provided with a dust lining on a side of the thermally insulating layer facing away from the pipes, that combustion air supplied to the burner is preheated together with a heating medium conveyed in the pipes, said heating medium consisting of the waste gases and the system air, said heating medium having temperatures of about 80° to 400° C. after passing through the pipe system via heat exchangers and that optionally a waste heat available from production processes is additionally introduced into the pipes via hot air blowers.