Demonstration of a hybrid power and refrigeration ammonia-water cycle

Keisuke Takeshita*, Yoshiharu Amano, Takumi Hashizume

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)


This paper reports on the demonstration of a hybrid power generation and refrigeration cycle in a turbine system which employs ammonia-water mixture as the working fluid. The hybrid cycle is the one in which the ammonia-water mixture turbine cycle and the ammonia absorption refrigerator are combined. To demonstrate the performance enhancement of the hybrid cycle, its steady state characteristics were experimentally investigated. The increase of the coefficient of performance (COP) and the performance improvement of the cycle are mainly due to a reduction of the heat of rectification at the ammonia absorption refrigerator. Therefore, the authors especially focused on the COP, the heat source steam consumption rate, and the heat of rectification when the ammonia mass fraction at the rectifier inlet increased. Results showed the COP and heat source steam consumption rate improved about 20% in hybrid operation, compared with normal operation which drives the ammonia absorption refrigerator and the ammonia-water mixture turbine cycle separately.

Original languageEnglish
Title of host publicationProceedings of the ASME Turbo Expo 2006 - Power for Land, Sea, and Air
Number of pages6
Publication statusPublished - 2006 Nov 15
Event2006 ASME 51st Turbo Expo - Barcelona, Spain
Duration: 2006 May 62006 May 11

Publication series

NameProceedings of the ASME Turbo Expo


Conference2006 ASME 51st Turbo Expo

ASJC Scopus subject areas

  • Engineering(all)


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