Generating efficiency and NOx emissions of a gas engine generator fueled with a biogas-hydrogen blend and using an exhaust gas recirculation system

Kyungtaek Lee; Taesoo Kim; Hyoseok Cha; Soonho Song; Kwang Min Chun

doi:10.1016/j.ijhydene.2010.03.076

Generating efficiency and NO_x emissions of a gas engine generator fueled with a biogas-hydrogen blend and using an exhaust gas recirculation system

Kyungtaek Lee, Taesoo Kim, Hyoseok Cha, Soonho Song, Kwang Min Chun

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

53 Citations (Scopus)

Abstract

This paper investigates the generating efficiency and NO_x emissions of a gas engine generator with a low-pressure loop exhaust gas recirculation system, fueled by a model biogas. Experiments for improving the generating efficiency and reducing NO_x emissions were conducted, utilizing optimum spark timings based on the maximum generating efficiencies with varying exhaust gas recirculation (EGR) rates. The test results show that both the NO_x emissions and the generating efficiency generally decrease when the EGR rate is increased. Also, by utilizing optimum spark timings with varying EGR rates, the addition of hydrogen to the biogas increases the generating efficiency of the engine. In particular, the generating efficiency of the biogas-hydrogen test increased by about 1.5% in comparison with the model biogas test for the optimum spark timing at 15% EGR. Accordingly, comprehensive techniques, such as the use of a biogas-hydrogen fuel mixture and optimum spark timings with respect to EGR rates, should be employed to efficiently generate electricity with a biogas engine.

Original language	English
Pages (from-to)	5723-5730
Number of pages	8
Journal	International Journal of Hydrogen Energy
Volume	35
Issue number	11
DOIs	https://doi.org/10.1016/j.ijhydene.2010.03.076
Publication status	Published - 2010 Jun

Bibliographical note

Funding Information:
This work was supported by the New and Renewable Energy R&D Program (2008-N-WA02-P-01) under the Ministry of Knowledge and Economy, and is the result of a Manpower Development Program for Energy and Resources supported by the Ministry of Knowledge and Economy, Republic of Korea. The authors wish to thank Hanatech for providing access to the gas engine generator used in this research.

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2010.03.076

Cite this

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title = "Generating efficiency and NOx emissions of a gas engine generator fueled with a biogas-hydrogen blend and using an exhaust gas recirculation system",

abstract = "This paper investigates the generating efficiency and NOx emissions of a gas engine generator with a low-pressure loop exhaust gas recirculation system, fueled by a model biogas. Experiments for improving the generating efficiency and reducing NOx emissions were conducted, utilizing optimum spark timings based on the maximum generating efficiencies with varying exhaust gas recirculation (EGR) rates. The test results show that both the NOx emissions and the generating efficiency generally decrease when the EGR rate is increased. Also, by utilizing optimum spark timings with varying EGR rates, the addition of hydrogen to the biogas increases the generating efficiency of the engine. In particular, the generating efficiency of the biogas-hydrogen test increased by about 1.5% in comparison with the model biogas test for the optimum spark timing at 15% EGR. Accordingly, comprehensive techniques, such as the use of a biogas-hydrogen fuel mixture and optimum spark timings with respect to EGR rates, should be employed to efficiently generate electricity with a biogas engine.",

author = "Kyungtaek Lee and Taesoo Kim and Hyoseok Cha and Soonho Song and Chun, {Kwang Min}",

note = "Funding Information: This work was supported by the New and Renewable Energy R&D Program (2008-N-WA02-P-01) under the Ministry of Knowledge and Economy, and is the result of a Manpower Development Program for Energy and Resources supported by the Ministry of Knowledge and Economy, Republic of Korea. The authors wish to thank Hanatech for providing access to the gas engine generator used in this research. ",

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AU - Lee, Kyungtaek

AU - Kim, Taesoo

AU - Cha, Hyoseok

AU - Song, Soonho

AU - Chun, Kwang Min

N1 - Funding Information: This work was supported by the New and Renewable Energy R&D Program (2008-N-WA02-P-01) under the Ministry of Knowledge and Economy, and is the result of a Manpower Development Program for Energy and Resources supported by the Ministry of Knowledge and Economy, Republic of Korea. The authors wish to thank Hanatech for providing access to the gas engine generator used in this research.

PY - 2010/6

Y1 - 2010/6

N2 - This paper investigates the generating efficiency and NOx emissions of a gas engine generator with a low-pressure loop exhaust gas recirculation system, fueled by a model biogas. Experiments for improving the generating efficiency and reducing NOx emissions were conducted, utilizing optimum spark timings based on the maximum generating efficiencies with varying exhaust gas recirculation (EGR) rates. The test results show that both the NOx emissions and the generating efficiency generally decrease when the EGR rate is increased. Also, by utilizing optimum spark timings with varying EGR rates, the addition of hydrogen to the biogas increases the generating efficiency of the engine. In particular, the generating efficiency of the biogas-hydrogen test increased by about 1.5% in comparison with the model biogas test for the optimum spark timing at 15% EGR. Accordingly, comprehensive techniques, such as the use of a biogas-hydrogen fuel mixture and optimum spark timings with respect to EGR rates, should be employed to efficiently generate electricity with a biogas engine.

AB - This paper investigates the generating efficiency and NOx emissions of a gas engine generator with a low-pressure loop exhaust gas recirculation system, fueled by a model biogas. Experiments for improving the generating efficiency and reducing NOx emissions were conducted, utilizing optimum spark timings based on the maximum generating efficiencies with varying exhaust gas recirculation (EGR) rates. The test results show that both the NOx emissions and the generating efficiency generally decrease when the EGR rate is increased. Also, by utilizing optimum spark timings with varying EGR rates, the addition of hydrogen to the biogas increases the generating efficiency of the engine. In particular, the generating efficiency of the biogas-hydrogen test increased by about 1.5% in comparison with the model biogas test for the optimum spark timing at 15% EGR. Accordingly, comprehensive techniques, such as the use of a biogas-hydrogen fuel mixture and optimum spark timings with respect to EGR rates, should be employed to efficiently generate electricity with a biogas engine.

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