Generating efficiency and emissions of a spark-ignition gas engine generator fuelled with biogas-hydrogen blends

Chulyoung Jeong; Taesoo Kim; Kyungtaek Lee; Soonho Song; Kwang Min Chun

doi:10.1016/j.ijhydene.2009.09.099

Generating efficiency and emissions of a spark-ignition gas engine generator fuelled with biogas-hydrogen blends

Chulyoung Jeong, Taesoo Kim, Kyungtaek Lee, Soonho Song, Kwang Min Chun

Department of Mechanical Engineering

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

61 Citations (Scopus)

Abstract

We investigated the generating efficiency and pollutant emissions of a four-stroke spark-ignition gas engine generator operating on biogas-hydrogen blends of varying excess air ratios and hydrogen concentrations. Experiments were carried out at a constant engine speed of 1200 rpm and a constant electric power output of 10 kW. The experimental results showed that the peak values of generating efficiency, maximum cylinder pressure, and NO_x emissions were elevated at an excess air ratio of around 1.2 as the hydrogen concentration was increased. CO₂ emissions decreased as the excess air ratio and hydrogen concentration increased, due to lean-burn conditions and hydrogen combustion. An efficiency per NO_x emissions ratio (EPN) was defined to consider the relationship between the generating efficiency and NO_x emissions. A maximum EPN value of 0.7502 was obtained with a hydrogen concentration of 15%, for an excess air ratio of 2.0. At this EPN value, the NO_x and CO₂ emissions were 39 ppm and 1678.32 g/kWh, respectively, and the generating efficiency was 29.26%. These results demonstrated that the addition of hydrogen to biogas enabled the effective generation of electricity using a gas engine generator through lean-burn combustion.

Original language	English
Pages (from-to)	9620-9627
Number of pages	8
Journal	International Journal of Hydrogen Energy
Volume	34
Issue number	23
DOIs	https://doi.org/10.1016/j.ijhydene.2009.09.099
Publication status	Published - 2009 Dec

Bibliographical note

Funding Information:
This work was supported by New & Renewable Energy R&D program (2008-N-WA02-P-01) and a Manpower Development Program for Energy & Resources under the Ministry of Knowledge Economy, Republic of Korea. The authors wish to thank HANATECH for providing access to the lean-burn gas engine generator, POSCO E&C for providing a biogas site, and RIST for helping analyze the biogas components.

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.2009.09.099

Cite this

@article{6e96ea2fcb5543e79a689877bc3ba1b2,

title = "Generating efficiency and emissions of a spark-ignition gas engine generator fuelled with biogas-hydrogen blends",

abstract = "We investigated the generating efficiency and pollutant emissions of a four-stroke spark-ignition gas engine generator operating on biogas-hydrogen blends of varying excess air ratios and hydrogen concentrations. Experiments were carried out at a constant engine speed of 1200 rpm and a constant electric power output of 10 kW. The experimental results showed that the peak values of generating efficiency, maximum cylinder pressure, and NOx emissions were elevated at an excess air ratio of around 1.2 as the hydrogen concentration was increased. CO2 emissions decreased as the excess air ratio and hydrogen concentration increased, due to lean-burn conditions and hydrogen combustion. An efficiency per NOx emissions ratio (EPN) was defined to consider the relationship between the generating efficiency and NOx emissions. A maximum EPN value of 0.7502 was obtained with a hydrogen concentration of 15%, for an excess air ratio of 2.0. At this EPN value, the NOx and CO2 emissions were 39 ppm and 1678.32 g/kWh, respectively, and the generating efficiency was 29.26%. These results demonstrated that the addition of hydrogen to biogas enabled the effective generation of electricity using a gas engine generator through lean-burn combustion.",

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

note = "Funding Information: This work was supported by New & Renewable Energy R&D program (2008-N-WA02-P-01) and a Manpower Development Program for Energy & Resources under the Ministry of Knowledge Economy, Republic of Korea. The authors wish to thank HANATECH for providing access to the lean-burn gas engine generator, POSCO E&C for providing a biogas site, and RIST for helping analyze the biogas components.",

year = "2009",

month = dec,

doi = "10.1016/j.ijhydene.2009.09.099",

language = "English",

volume = "34",

pages = "9620--9627",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

publisher = "Elsevier Limited",

number = "23",

}

TY - JOUR

T1 - Generating efficiency and emissions of a spark-ignition gas engine generator fuelled with biogas-hydrogen blends

AU - Jeong, Chulyoung

AU - Kim, Taesoo

AU - Lee, Kyungtaek

AU - Song, Soonho

AU - Chun, Kwang Min

N1 - Funding Information: This work was supported by New & Renewable Energy R&D program (2008-N-WA02-P-01) and a Manpower Development Program for Energy & Resources under the Ministry of Knowledge Economy, Republic of Korea. The authors wish to thank HANATECH for providing access to the lean-burn gas engine generator, POSCO E&C for providing a biogas site, and RIST for helping analyze the biogas components.

PY - 2009/12

Y1 - 2009/12

N2 - We investigated the generating efficiency and pollutant emissions of a four-stroke spark-ignition gas engine generator operating on biogas-hydrogen blends of varying excess air ratios and hydrogen concentrations. Experiments were carried out at a constant engine speed of 1200 rpm and a constant electric power output of 10 kW. The experimental results showed that the peak values of generating efficiency, maximum cylinder pressure, and NOx emissions were elevated at an excess air ratio of around 1.2 as the hydrogen concentration was increased. CO2 emissions decreased as the excess air ratio and hydrogen concentration increased, due to lean-burn conditions and hydrogen combustion. An efficiency per NOx emissions ratio (EPN) was defined to consider the relationship between the generating efficiency and NOx emissions. A maximum EPN value of 0.7502 was obtained with a hydrogen concentration of 15%, for an excess air ratio of 2.0. At this EPN value, the NOx and CO2 emissions were 39 ppm and 1678.32 g/kWh, respectively, and the generating efficiency was 29.26%. These results demonstrated that the addition of hydrogen to biogas enabled the effective generation of electricity using a gas engine generator through lean-burn combustion.

AB - We investigated the generating efficiency and pollutant emissions of a four-stroke spark-ignition gas engine generator operating on biogas-hydrogen blends of varying excess air ratios and hydrogen concentrations. Experiments were carried out at a constant engine speed of 1200 rpm and a constant electric power output of 10 kW. The experimental results showed that the peak values of generating efficiency, maximum cylinder pressure, and NOx emissions were elevated at an excess air ratio of around 1.2 as the hydrogen concentration was increased. CO2 emissions decreased as the excess air ratio and hydrogen concentration increased, due to lean-burn conditions and hydrogen combustion. An efficiency per NOx emissions ratio (EPN) was defined to consider the relationship between the generating efficiency and NOx emissions. A maximum EPN value of 0.7502 was obtained with a hydrogen concentration of 15%, for an excess air ratio of 2.0. At this EPN value, the NOx and CO2 emissions were 39 ppm and 1678.32 g/kWh, respectively, and the generating efficiency was 29.26%. These results demonstrated that the addition of hydrogen to biogas enabled the effective generation of electricity using a gas engine generator through lean-burn combustion.

UR - http://www.scopus.com/inward/record.url?scp=71849113613&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=71849113613&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2009.09.099

DO - 10.1016/j.ijhydene.2009.09.099

M3 - Article

AN - SCOPUS:71849113613

SN - 0360-3199

VL - 34

SP - 9620

EP - 9627

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 23

ER -

Generating efficiency and emissions of a spark-ignition gas engine generator fuelled with biogas-hydrogen blends

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this