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. 16, 2001
Filed:
Feb. 12, 1998
Motoaki Utamura, Ibaraki, JP;
Shinichi Hoizumi, Ibaraki, JP;
Yasushi Takeda, Ibaraki, JP;
Toshihiko Sasaki, Ibaraki, JP;
Hideaki Komatsu, Ibaraki, JP;
Seiichi Kirikami, Ibaraki, JP;
Takeshi Suzumura, Ibaraki, JP;
Tetsuo Sasada, Ibaraki, JP;
Takashi Ikeguchi, Ibaraki, JP;
Shigehisa Sugita, Ibaraki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
To improve the thermal efficiency when an exhaust heat recovery type combined cycle plant having a gas turbine and a steam turbine in combination is operated at a partial load, the gas turbine exhaust is recirculated and returned to the compressor, and the combustion temperature is prevented from being lowered at the partial load. Preferably, the temperature is maintained constant. In this way, the thermal efficiency during operation at partial load can be improved.