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. 09, 2006
Filed:
Aug. 16, 2005
Method and apparatus for controlling the final feedwater temperature of a regenerative rankine cycle
Fred D. Lang, San Rafael, CA (US);
Fred D. Lang, San Rafael, CA (US);
Other;
Abstract
This invention relates to a method and apparatus for controlling the final feedwater temperature associated with a regenerative Rankine cycle, said cycle commonly used in thermal systems such as conventional power plants. This invention involves the placement of a new heat exchanger, termed an Exergetic Heater, in the feedwater path downstream from the highest pressure feedwater heater to assure that the feedwater is properly heated to its final temperature before entering the steam generator. The heating of the feedwater is accomplished by routing steam from the Intermediate Pressure turbine, which normally is routed to the second highest pressure heater. Control of the final feedwater temperature is achieved through a control valve whose actuation adjusts the amount of steam flow being routed from the Intermediate Pressure turbine to the Exergetic Heater.