View in EDS

Development and demonstration of strategies for GHG and methane slip reduction from dual-fuel natural gas coastal vessels.

Saved in:
Bibliographic Details
Title: Development and demonstration of strategies for GHG and methane slip reduction from dual-fuel natural gas coastal vessels.
Authors: Rochussen, J.1 (AUTHOR) jrochussen@mech.ubc.ca, Jaeger, N.S.B.1 (AUTHOR), Penner, H.2 (AUTHOR), Khan, A.2 (AUTHOR), Kirchen, P.1 (AUTHOR)
Source: Fuel (0016-2361). Oct2023, Vol. 349, pN.PAG-N.PAG. 1p.
Subjects: International Maritime Organization, Natural gas, Greenhouse gases, Marine engines, Emission inventories, Engine testing, Greenhouse gas mitigation, Alternative fuels, Carbon dioxide, Nitrogen oxides emission control
Abstract: Low Pressure Dual Fuel (LPDF) marine engines fueled with natural gas (NG) provide a cost-effective means for minimizing fuel sulfur content, and NOx and PM emissions for marine vessels. In addition, the use of NG can provide significant GHG reductions, if CH 4 slip is mitigated. Alternative fueling strategies such as LPDF, are commonly assessed by life-cycle analyses using exhaust emission rates from generalized engine test cycles (e.g. IMO E2). As CH 4 slip from LPDF NG engines is particularly sensitive to engine load, a greenhouse gas emission inventory based on generalized engine cycles may not accurately represent real-world vessel operation and emissions. The objectives of this work are to: (i) quantify the GHG emissions reductions possible using the current best available LPDF technology and, (ii) evaluate the attained real-world emissions reduction as a result of improved vessel operating strategies and state of the art engine technology for coastal LPDF vessels. Steady-state emission factors (g/kW-h) and emission rates (g/h) of CH 4 , CO, CO 2 , and NOx were measured during steady-state and dynamic operation for two roll-on-roll-off ferries with LPDF engines from two different manufacturers. During commercial operation, the combination of a revised LPDF engine calibration and best vessel operating strategy reduced GHG emissions by 57% and 24%, relative to stock LPDF and diesel operation on vessel #1, respectively. Compared to diesel operation, the annual GHG savings on vessel #1 as a result of this program equate to approximately 2.4 kT CO 2 e. The tank-to-wake CH 4 emissions measured in the current and previous works were found to have poor agreement with the those based on the corresponding test cycle (E2). The E2 cycle overestimated the current CH 4 emissions by 8–30% depending on the implemented operating strategy. Prior to implementation of these strategies, the E2 cycle underestimated the CH 4 emissions by 74% (Peng et al., 2020). This underscores the value of in-use emission measurements for accurate evaluation of alternative fueling strategies, as well as the utility of emission-informed vessel operation strategies. • Case-study of achieved reductions of GHG emissions on an LNG marine vessel. • Steady and dynamic exhaust emissions measured on two dual-fuel coastal ferries. • Methane slip reduced by 82% by engine calibration and improved operating strategies. • Stock vessel GHG penalty relative to diesel operation turned into a GHG reduction. • Significant error in standard emission factor inventory methodology identified. [ABSTRACT FROM AUTHOR]
Copyright of Fuel (0016-2361) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 164089716
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Development and demonstration of strategies for GHG and methane slip reduction from dual-fuel natural gas coastal vessels.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Rochussen%2C+J%2E%22">Rochussen, J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jrochussen@mech.ubc.ca</i><br /><searchLink fieldCode="AR" term="%22Jaeger%2C+N%2ES%2EB%2E%22">Jaeger, N.S.B.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Penner%2C+H%2E%22">Penner, H.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Khan%2C+A%2E%22">Khan, A.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kirchen%2C+P%2E%22">Kirchen, P.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Fuel+%280016-2361%29%22">Fuel (0016-2361)</searchLink>. Oct2023, Vol. 349, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22International+Maritime+Organization%22">International Maritime Organization</searchLink><br /><searchLink fieldCode="DE" term="%22Natural+gas%22">Natural gas</searchLink><br /><searchLink fieldCode="DE" term="%22Greenhouse+gases%22">Greenhouse gases</searchLink><br /><searchLink fieldCode="DE" term="%22Marine+engines%22">Marine engines</searchLink><br /><searchLink fieldCode="DE" term="%22Emission+inventories%22">Emission inventories</searchLink><br /><searchLink fieldCode="DE" term="%22Engine+testing%22">Engine testing</searchLink><br /><searchLink fieldCode="DE" term="%22Greenhouse+gas+mitigation%22">Greenhouse gas mitigation</searchLink><br /><searchLink fieldCode="DE" term="%22Alternative+fuels%22">Alternative fuels</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+dioxide%22">Carbon dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Nitrogen+oxides+emission+control%22">Nitrogen oxides emission control</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Low Pressure Dual Fuel (LPDF) marine engines fueled with natural gas (NG) provide a cost-effective means for minimizing fuel sulfur content, and NOx and PM emissions for marine vessels. In addition, the use of NG can provide significant GHG reductions, if CH 4 slip is mitigated. Alternative fueling strategies such as LPDF, are commonly assessed by life-cycle analyses using exhaust emission rates from generalized engine test cycles (e.g. IMO E2). As CH 4 slip from LPDF NG engines is particularly sensitive to engine load, a greenhouse gas emission inventory based on generalized engine cycles may not accurately represent real-world vessel operation and emissions. The objectives of this work are to: (i) quantify the GHG emissions reductions possible using the current best available LPDF technology and, (ii) evaluate the attained real-world emissions reduction as a result of improved vessel operating strategies and state of the art engine technology for coastal LPDF vessels. Steady-state emission factors (g/kW-h) and emission rates (g/h) of CH 4 , CO, CO 2 , and NOx were measured during steady-state and dynamic operation for two roll-on-roll-off ferries with LPDF engines from two different manufacturers. During commercial operation, the combination of a revised LPDF engine calibration and best vessel operating strategy reduced GHG emissions by 57% and 24%, relative to stock LPDF and diesel operation on vessel #1, respectively. Compared to diesel operation, the annual GHG savings on vessel #1 as a result of this program equate to approximately 2.4 kT CO 2 e. The tank-to-wake CH 4 emissions measured in the current and previous works were found to have poor agreement with the those based on the corresponding test cycle (E2). The E2 cycle overestimated the current CH 4 emissions by 8–30% depending on the implemented operating strategy. Prior to implementation of these strategies, the E2 cycle underestimated the CH 4 emissions by 74% (Peng et al., 2020). This underscores the value of in-use emission measurements for accurate evaluation of alternative fueling strategies, as well as the utility of emission-informed vessel operation strategies. • Case-study of achieved reductions of GHG emissions on an LNG marine vessel. • Steady and dynamic exhaust emissions measured on two dual-fuel coastal ferries. • Methane slip reduced by 82% by engine calibration and improved operating strategies. • Stock vessel GHG penalty relative to diesel operation turned into a GHG reduction. • Significant error in standard emission factor inventory methodology identified. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Fuel (0016-2361) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=164089716
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.fuel.2023.128433
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: International Maritime Organization
        Type: general
      – SubjectFull: Natural gas
        Type: general
      – SubjectFull: Greenhouse gases
        Type: general
      – SubjectFull: Marine engines
        Type: general
      – SubjectFull: Emission inventories
        Type: general
      – SubjectFull: Engine testing
        Type: general
      – SubjectFull: Greenhouse gas mitigation
        Type: general
      – SubjectFull: Alternative fuels
        Type: general
      – SubjectFull: Carbon dioxide
        Type: general
      – SubjectFull: Nitrogen oxides emission control
        Type: general
    Titles:
      – TitleFull: Development and demonstration of strategies for GHG and methane slip reduction from dual-fuel natural gas coastal vessels.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Rochussen, J.
      – PersonEntity:
          Name:
            NameFull: Jaeger, N.S.B.
      – PersonEntity:
          Name:
            NameFull: Penner, H.
      – PersonEntity:
          Name:
            NameFull: Khan, A.
      – PersonEntity:
          Name:
            NameFull: Kirchen, P.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 10
              Text: Oct2023
              Type: published
              Y: 2023
          Identifiers:
            – Type: issn-print
              Value: 00162361
          Numbering:
            – Type: volume
              Value: 349
          Titles:
            – TitleFull: Fuel (0016-2361)
              Type: main
ResultId 1