Liquid heaters and vaporizers – Circulation – Once through
Reexamination Certificate
2005-10-25
2005-10-25
Wilson, Gregory A. (Department: 3749)
Liquid heaters and vaporizers
Circulation
Once through
C122S00700A, C122S45100R
Reexamination Certificate
active
06957630
ABSTRACT:
A steam generator is disclosed herein. The steam generator includes an inlet manifold, a discharge manifold, a heating gas duct, and at least one once-through heating area in the heating-gas duct. The once-through heating area is formed from multiple single-row header-and-tube assemblies. Each single-row header-and-tube assembly includes a plurality of steam generator tubes connected in parallel, an inlet header connected to the inlet manifold, and a discharge header connected to the discharge manifold. Each inlet header is connected to the inlet manifold by one of multiple first link pipes, and each discharge header is connected to the discharge manifold by one of multiple second link pipes. Each said steam generator tube of each of the single-row header-and-tube assemblies has an inside diameter that is less than an inside diameter of any of the first or second link pipes.
REFERENCES:
patent: 4685426 (1987-08-01), Kidaloski et al.
patent: 4915062 (1990-04-01), Dolezal
patent: 6189491 (2001-02-01), Wittchow et al.
patent: 6868807 (2005-03-01), Franke et al.
Alstom Technology Ltd
Antonelli Terry Stout & Kraus LLP
Wilson Gregory A.
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