Use of latent heat recovery from liquefied natural gas combustion for increasing the efficiency of a combined-cycle gas turbine power plant

Li Yuan-Hu, Jinyoung Kim, Seohyun Kim, Haksoo Han

Research output: Contribution to journalArticle


To increase the efficiency of a combined-cycle gas turbine (CCGT) power plant, an innovative system was built to recycle its internal unutilized energy and increase the heating output. CCGT circulation and absorption heat pump circulation were combined in the new system, and latent heat recovery from LNG combustion was realized with very slight power consumption. The innovative system was applied in a 200-MW power plant, and real operation data were obtained to design optimal temperature and flow rate balance. Finally, the effect of system transformation on the efficiency increase was analyzed. The proposed system enhanced the overall primary energy efficiency of cogeneration and thermal output by 2.6 and 7.4%, respectively.

Original languageEnglish
Article number114177
JournalApplied Thermal Engineering
Publication statusPublished - 2019 Oct


All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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