The advanced humid air turbine (AHAT) system improves the thermal efficiency of gas turbine power generation by using a humidifier, a water atomization cooling (WAC) system, and a heat recovery system, thus eliminating the need for an extremely high firing temperature and pressure ratio. The following elemental technologies have been developed to realize the AHAT system: (1) a broad working range and high-efficiency compressor that utilizes the WAC system to reduce compression work, (2) turbine blade cooling techniques that can withstand high heat flux due to high-humidity working gas, and (3) a combustor that achieves both low emissions and a stable flame condition with high-humidity air. A gas turbine equipped with a two-stage radial compressor (with a pressure ratio of 8), two-stage axial turbine, and a reverse-flow type of single-can combustor has been developed based on the elemental technologies described above. A pilot plant that consists of a gas turbine generator, recuperator, humidification tower, water recovery system, WAC system, economizer, and other components is planned to be constructed, with testing slated to begin in October 2006 to validate the performance and reliability of the AHAT system. The expected performance is as follows: thermal efficiency of 43% (LHV), output of , and emissions of less than at 15% O2. This paper introduces the elemental technologies and the pilot plant to be built for the AHAT system.
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Development of Elemental Technologies for Advanced Humid Air Turbine System
Hidetoshi Kuroki,
Hidetoshi Kuroki
Hitachi Ltd. Power & Industrial Systems R&D Laboratory
, 7-2-1 Omika-cho, Hitachi-shi 319-1221 Japan
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Shigeo Hatamiya,
Shigeo Hatamiya
Hitachi Ltd. Power & Industrial Systems R&D Laboratory
, 7-2-1 Omika-cho, Hitachi-shi 319-1221 Japan
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Takanori Shibata,
Takanori Shibata
Hitachi Ltd. Power & Industrial Systems R&D Laboratory
, 7-2-1 Omika-cho, Hitachi-shi 319-1221 Japan
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Tomomi Koganezawa,
Tomomi Koganezawa
Hitachi Ltd. Power & Industrial Systems R&D Laboratory
, 7-2-1 Omika-cho, Hitachi-shi 319-1221 Japan
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Nobuaki Kizuka,
Nobuaki Kizuka
Hitachi Ltd. Power & Industrial Systems R&D Laboratory
, 7-2-1 Omika-cho, Hitachi-shi 319-1221 Japan
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Shinya Marushima
Shinya Marushima
Hitachi Ltd. Power & Industrial Systems R&D Laboratory
, 7-2-1 Omika-cho, Hitachi-shi 319-1221 Japan
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Hidetoshi Kuroki
Hitachi Ltd. Power & Industrial Systems R&D Laboratory
, 7-2-1 Omika-cho, Hitachi-shi 319-1221 Japan
Shigeo Hatamiya
Hitachi Ltd. Power & Industrial Systems R&D Laboratory
, 7-2-1 Omika-cho, Hitachi-shi 319-1221 Japan
Takanori Shibata
Hitachi Ltd. Power & Industrial Systems R&D Laboratory
, 7-2-1 Omika-cho, Hitachi-shi 319-1221 Japan
Tomomi Koganezawa
Hitachi Ltd. Power & Industrial Systems R&D Laboratory
, 7-2-1 Omika-cho, Hitachi-shi 319-1221 Japan
Nobuaki Kizuka
Hitachi Ltd. Power & Industrial Systems R&D Laboratory
, 7-2-1 Omika-cho, Hitachi-shi 319-1221 Japan
Shinya Marushima
Hitachi Ltd. Power & Industrial Systems R&D Laboratory
, 7-2-1 Omika-cho, Hitachi-shi 319-1221 JapanJ. Eng. Gas Turbines Power. May 2008, 130(3): 031701 (6 pages)
Published Online: March 26, 2008
Article history
Received:
June 20, 2006
Revised:
October 13, 2007
Published:
March 26, 2008
Citation
Kuroki, H., Hatamiya, S., Shibata, T., Koganezawa, T., Kizuka, N., and Marushima, S. (March 26, 2008). "Development of Elemental Technologies for Advanced Humid Air Turbine System." ASME. J. Eng. Gas Turbines Power. May 2008; 130(3): 031701. https://doi.org/10.1115/1.2833490
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