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:
Feb. 24, 2004
Filed:
Mar. 26, 2002
Franz Kreitmeier, Baden, CH;
Alstom Technology Ltd, Baden, CH;
Abstract
A recuperator ( ) in a thermal power installation such as, for example, a gas turbine installation or air storage power installation, having turbines ( ) and a generator (G), has sectors (S -S ) with tubes for the circulation of air. Hot exhaust gases from the turbines ( ) are supplied to the recuperator ( ) for the purpose of heating the air flowing through the sectors (S -S ). According to the invention, the recuperator ( ) has one or a plurality of external heat storage devices (HS HS HS ) which are connected between the (S -S ) of the recuperator ( ) and are heated during the normal operation of the power installation. During an outage period of the power installation, air is circulated through the installation components ( ), a temperature distribution being maintained in these components with temperature differences which are smaller than a critical magnitude with respect to transient thermal stresses in the components of the recuperator. After an outage period, the power installation can be started up to full load in a short time and without risk with respect to transient thermal stresses in the recuperator ( ), turbines ( ) and combustion chamber ( ).