US 12,253,004 B1
Inlet duct system for a heat recovery steam generator
Alessandro Sgambati, Baden (CH); Scott William Herman, Enfield, CT (US); Meghan Sheehy, Longmeadow, MA (US); and Dimitrios V. Doupis, Avon, CT (US)
Assigned to GE Infrastructure Technology LLC, Greenville, SC (US)
Filed by GE Infrastructure Technology LLC, Greenville, SC (US)
Filed on Feb. 28, 2024, as Appl. No. 18/590,849.
Int. Cl. F01D 25/30 (2006.01)
CPC F01D 25/30 (2013.01) 23 Claims
OG exemplary drawing
 
1. A system, comprising:
an exhaust diffuser system for a heat recovery steam generator (HRSG), comprising:
an inlet portion;
a diffuser portion axially extending from the inlet portion, wherein the diffuser portion comprises a plurality of sides arranged about a central axis of the diffuser portion; and
an outlet portion fluidly coupled to an axial distal end of the diffuser portion;
wherein an outlet extent of the outlet portion is greater than an inlet extent of the inlet portion, at least one side of the plurality of sides of the diffuser portion comprises a plurality of wall portions, the plurality of wall portions is incrementally angled relative to an axial extent extending from the inlet portion to the outlet portion, and the plurality of wall portions comprises four or more wall portions;
wherein each wall portion of the plurality of wall portions is angled relative to an immediately preceding wall portion of the plurality of wall portions by an angle within a common angular range of angles between 150 degrees and 179 degrees, or angles between successive wall portions of the plurality of wall portions change by less than 10 degrees, or a combination thereof.