title: A study on the evaluations of emission factors and uncertainty ranges for methane and nitrous oxide from combined-cycle power plant in Korea.
abstract: In this research, in order to develop technology/country-specific emission factors of methane (CH(4)) and nitrous oxide (N(2)O), a total of 585 samples from eight gas-fired turbine combined cycle (GTCC) power plants were measured and analyzed. The research found that the emission factor for CH(4) stood at "0.82 kg/TJ", which was an 18 % lower than the emission factor for liquefied natural gas (LNG) GTCC "1 kg/TJ" presented by Intergovernmental Panel on Climate Change (IPCC). The result was 8 % up when compared with the emission factor of Japan which stands at "0.75 kg/TJ". The emission factor for N(2)O was "0.65 kg/TJ", which is significantly lower than "3 kg/TJ" of the emission factor for LNG GTCC presented by IPCC, but over six times higher than the default N(2)O emission factor of LNG. The evaluation of uncertainty was conducted based on the estimated non-CO(2) emission factors, and the ranges of uncertainty for CH(4) and N(2)O were between -12.96 and +13.89 %, and -11.43 and +12.86 %, respectively, which is significantly lower than uncertainties presented by IPCC. These differences proved that non-CO(2) emissions can change depending on combustion technologies; therefore, it is vital to establish country/technology-specific emission factors.
authors.affiliation: Department of Earth and Environmental Sciences, Sejong University, 98 Gunja-dong Gwangjin-gu, Seoul 143-747, South Korea.
authors.forename: Seehyung
authors.initials: S
authors.lastname: Lee
authors.forename: Jinsu
authors.initials: J
authors.lastname: Kim
authors.forename: Jeongwoo
authors.initials: J
authors.lastname: Lee
authors.forename: Seongho
authors.initials: S
authors.lastname: Lee
authors.forename: Eui-Chan
authors.initials: EC
authors.lastname: Jeon
mesh_terms: D000393:Air Pollutants / Q000032:analysis* / Q000592:standards; D000397:Air Pollution / Q000706:statistics & numerical data; D008697:Methane / Q000032:analysis* / Q000592:standards; D009609:Nitrous Oxide / Q000032:analysis* / Q000592:standards; D011210:Power Plants / Q000706:statistics & numerical data*; D056910:Republic of Korea; D035501:Uncertainty
chemical_list: D000393:Air Pollutants; D009609:Nitrous Oxide; D008697:Methane