Experimental study of advanced cogeneration system with ammonia-water mixture cycles at bottoming

Keisuke Takeshita, Yoshiharu Amano*, Takumi Hashizume

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)


In this study, an advanced cogeneration system, (ACGS) composed, of three turbine systems and an ammonia absorption refrigerator is presented. The overall system configurations and some experimental results of the steady state are shown. The effectiveness of the bottoming stage that employs an ammonia-water mixture (AWM) as the working fluid is confirmed by experimental investigation. The experimental investigation shows that the AWM bottoming power-refrigeration cycles contributes to a higher bottoming efficiency, which is about 7.0% in electric power. Otherwise, the efficiency at the middle stage in conventional combined gas and steam turbine power plants is 4.6%. The cogeneration efficiency at the bottoming reached about 26.5% which is the heat and power ratio to the heat input from the heat recovery steam generator.

Original languageEnglish
Pages (from-to)247-260
Number of pages14
Issue number2-4 SPEC. ISS.
Publication statusPublished - 2005

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Pollution
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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