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

Abstract

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
Volume161
DOIs
Publication statusPublished - 2019 Oct

Fingerprint

Gas turbine power plants
Combined cycle power plants
Latent heat
Waste heat utilization
Liquefied natural gas
Boiler circulation
Gas turbines
Energy efficiency
Power plants
Electric power utilization
Flow rate
Pumps
Heating
Temperature
Hot Temperature
Optimal design

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

Cite this

@article{775788e4c4f14d0a99eb65b80fd1f80d,
title = "Use of latent heat recovery from liquefied natural gas combustion for increasing the efficiency of a combined-cycle gas turbine power plant",
abstract = "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.",
author = "Li Yuan-Hu and Jinyoung Kim and Seohyun Kim and Haksoo Han",
year = "2019",
month = "10",
doi = "10.1016/j.applthermaleng.2019.114177",
language = "English",
volume = "161",
journal = "Applied Thermal Engineering",
issn = "1359-4311",
publisher = "Elsevier Limited",

}

Use of latent heat recovery from liquefied natural gas combustion for increasing the efficiency of a combined-cycle gas turbine power plant. / Yuan-Hu, Li; Kim, Jinyoung; Kim, Seohyun; Han, Haksoo.

In: Applied Thermal Engineering, Vol. 161, 114177, 10.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Use of latent heat recovery from liquefied natural gas combustion for increasing the efficiency of a combined-cycle gas turbine power plant

AU - Yuan-Hu, Li

AU - Kim, Jinyoung

AU - Kim, Seohyun

AU - Han, Haksoo

PY - 2019/10

Y1 - 2019/10

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85069722995&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85069722995&partnerID=8YFLogxK

U2 - 10.1016/j.applthermaleng.2019.114177

DO - 10.1016/j.applthermaleng.2019.114177

M3 - Article

AN - SCOPUS:85069722995

VL - 161

JO - Applied Thermal Engineering

JF - Applied Thermal Engineering

SN - 1359-4311

M1 - 114177

ER -