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:
May. 22, 2001
Filed:
May. 30, 2000
Applicant:
Inventors:
Assignee:
ABB Patent GmbH, Mannheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01K 7/34 ;
U.S. Cl.
CPC ...
F01K 7/34 ;
Abstract
In a steam power station, the condensate used as feedwater is preheated up close to the boiling temperature by means of partial steam mass flows from the turbine steam quantity. Due to the steam extraction, the following steam-turbine stages can draw less power from the steam fluid. To avoid the reduction in the power output at the following steam-turbine stages, provision is made for the waste heat from fuel cells to be used for preheating the condensate. Due to the preheating of the feedwater from the waste heat of the fuel cells and the associated increase in the steam quantity participating in the expansion, an increase in the efficiency of the steam process is achieved.