A flow control device for partitioning a fluid flow from a common supply stream into at least two delivery streams by means of a common reciprocating damper such as a cylindrical sleeve damper. A combustion device using such a flow control device to partition a gas supply thereto and a combustion apparatus such as a...

A module for heat recovery from exhausted flue gas in a steam generator is described comprising a flue gas outlet conduit defining a flow path for flue gas from a flue gas outlet of a steam generator to a flue gas conduit junction; a first flue gas conduit defining a flow path for flue gas from the junction to a fir...