Patent · US Expired

Waste-heat steam generator

US6173679A · kind A · utility

64Cited by

8References

16Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Hermann Bruckner · Uttenreuth, DE
Werner Schwarzott · Großenseebach, DE
Helmut Stierstorfer · Erlangen, DE

Key dates

Filing date	Dec 30, 1999
Grant date	Jan 16, 2001
Priority date	—
Expiry date	Dec 30, 2019

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E20/16
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

For achieving a high plant efficiency, a waste-heat steam generator, in particular for a combined-cycle power plant, has a number of heating surfaces heatable by a flue gas and carrying a medium to be heated. The steam generator can be operated at critical or supercritical pressures and has a once-through evaporator connected in countercurrent to the flue gas provided on a medium side. The evaporator is followed by a preheater and preceded by a superheater on a flue-gas side.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.