Patent ID: 7270086
Filing Date: 2007-09-18
Classification: F22B

Abstract:
1. A steam generator, comprising: a heating gas duct through which a first medium can flow in a substantially horizontal heating direction; and a plurality of steam-generating pipes connected for a through flow of a second medium and arranged in the heating gas duct, each steam-generating pipe comprising: a first riser section through which the second medium can flow in an upward direction, the first riser section arranged substantially vertically, a down section in fluid communication to receive the second medium from the first riser section and through which the second medium can flow in a downwards direction, the down section arranged substantially vertically, and a second riser section in fluid communication to receive the second medium from the down section and through which the second medium can flow in an upward direction, the second riser section arranged substantially vertically; wherein the second riser section is disposed within the heating gas duct between the first riser section and the down section relative to a direction of flow of the first medium, and the first riser section is disposed within the heating gas duct upstream of the second riser section relative to the direction of flow of the first medium.