The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 01, 2019
Filed:
Aug. 26, 2010
Hamid Olia, Zürich, CH;
Hamid Olia, Zürich, CH;
GENERAL ELECTRIC TECHNOLOGY GMBH, Baden, CH;
Abstract
In a method for controlling a waste heat recovery steam generator of the once-through steam generator type in a combined cycle power plant, the flow volume of the feedwater into the steam generator is controlled based on a measured steam temperature at the outlet of a superheater and on a set-point value for the steam temperature for a steam turbine. A degree of superheating at the outlet of a high-pressure evaporator, a degree of subcooling at the inlet into the high-pressure evaporator, and the measured current flow volume of the feedwater are integrated in the control system in a plurality of control steps. For an optimum operation during rapid load changes, the method especially comprises additional controlling of the degree of subcooling of the flow medium at the inlet into the high-pressure evaporator.