scholarly journals Investigation of Effect on Environmental Performance of Using LNG as Fuel for Engines in Seaport Tugboats

2021 ◽  
Vol 9 (2) ◽  
pp. 123
Author(s):  
Sergejus Lebedevas ◽  
Lukas Norkevičius ◽  
Peilin Zhou
Keyword(s):  
Diesel Engine ◽  
Natural Gas ◽  
Baltic Sea ◽  
Impact Assessment ◽  
Fuel Consumption ◽  
Dual Fuel ◽  
Nox Emissions ◽  
The Baltic Sea ◽  
Emission Analysis ◽  
The Baltic

Decarbonization of ship power plants and reduction of harmful emissions has become a priority in the technological development of maritime transport, including ships operating in seaports. Engines fueled by diesel without using secondary emission reduction technologies cannot meet MARPOL 73/78 Tier III regulations. The MEPC.203 (62) EEDI directive of the IMO also stipulates a standard for CO2 emissions. This study presents the results of research on ecological parameters when a CAT 3516C diesel engine is replaced by a dual-fuel (diesel-liquefied natural gas) powered Wartsila 9L20DF engine on an existing seaport tugboat. CO2, SO2 and NOx emission reductions were estimated using data from the actual engine load cycle, the fuel consumption of the KLASCO-3 tugboat, and engine-prototype experimental data. Emission analysis was performed to verify the efficiency of the dual-fuel engine in reducing CO2, SO2 and NOx emissions of seaport tugboats. The study found that replacing a diesel engine with a dual-fuel-powered engine led to a reduction in annual emissions of 10% for CO2, 91% for SO2, and 65% for NOx. Based on today’s fuel price market data an economic impact assessment was conducted based on the estimated annual fuel consumption of the existing KLASCO-3 seaport tugboat when a diesel-powered engine is replaced by a dual-fuel (diesel-natural gas)-powered engine. The study showed that a 33% fuel costs savings can be achieved each year. Based on the approved methodology, an ecological impact assessment was conducted for the entire fleet of tugboats operating in the Baltic Sea ports if the fuel type was changed from diesel to natural gas. The results of the assessment showed that replacing diesel fuel with natural gas achieved 78% environmental impact in terms of NOx emissions according to MARPOL 73/78 Tier III regulations. The research concludes that new-generation engines on the market powered by environmentally friendly fuels such as LNG can modernise a large number of existing seaport tugboats, significantly reducing their emissions in ECA regions such as the Baltic Sea.

Performance and emissions of an electronic control common-rail diesel engine fuelled with liquefied natural gas-diesel dual-fuel under an optimization control scheme

2018 ◽  
Vol 233 (6) ◽  
pp. 1380-1390 ◽  
Author(s):  
Jiantong Song ◽  
Chunhua Zhang ◽  
Guoqing Lin ◽  
Quanchang Zhang
Keyword(s):  
Diesel Engine ◽  
Natural Gas ◽  
Fuel Consumption ◽  
Liquefied Natural Gas ◽  
Common Rail ◽  
Dual Fuel ◽  
Brake Specific Fuel Consumption ◽  
Electronic Control ◽  
Control Scheme ◽  
Optimization Control

In order to reduce the fuel consumption and hydrocarbon and CO emissions of liquefied natural gas-diesel dual-fuel engines under light loads, an optimization control scheme, in which the dual-fuel engine runs in original diesel mode under light loads, is used in this paper. The performance and exhaust emissions of the dual-fuel engine and the original diesel engine are compared and analyzed by bench tests of an electronic control common-rail diesel engine. Experimental results show that the brake-specific fuel consumption and hydrocarbon and CO emissions of the liquefied natural gas-diesel dual-fuel engine are not deteriorated under light loads. Compared with diesel, the brake power and torque of dual-fuel remain unchanged, the brake-specific fuel consumption decreases, and the smoke density and CO2 emissions of dual-fuel decrease, while the hydrocarbon and CO emissions increase, and there is no significant difference in NOx emissions.

scholarly journals A modelling system for the exhaust emissions of marine traffic and its application in the Baltic Sea area

2009 ◽  
Vol 9 (4) ◽  
pp. 15339-15373 ◽  
Author(s):  
J.-P. Jalkanen ◽  
A. Brink ◽  
J. Kalli ◽  
H. Pettersson ◽  
J. Kukkonen ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Fuel Consumption ◽  
Exhaust Emissions ◽  
Automatic Identification ◽  
Identification System ◽  
The Baltic Sea ◽  
Support Tool ◽  
Marine Traffic ◽  
The Baltic ◽  
Modelling System

Abstract. A method is presented for the evaluation of the exhaust emissions of marine traffic, based on the messages provided by the Automatic Identification System (AIS), which enable the identification and location determination of ships. The use of the AIS data enables the positioning of ship emissions with a high spatial resolution, which is limited only by the inaccuracies of the Global Positioning System (typically a few metres) that is used in vessel navigation. The emissions are computed based on the relationship of the instantaneous speed to the design speed, and these computations also take into account the detailed technical information of the ships' engines. The modelling of emissions is also based on a few basic equations of ship design, including the modelling of the propelling power of each vessel in terms of its speed. We have also investigated the effect of waves on the consumption of fuel, and on the emissions to the atmosphere. The predictions of fuel consumption were compared with the actual values obtained from the shipowners. For a RoPax vessel, the predicted and reported values of fuel consumption agreed within an accuracy of 6%. According to the data analysis and model computations, the emissions of NOx, SOx and CO2 originating from ships in the Baltic Sea in 2007 were in total 400 kt, 138 kt and 19 Mt, respectively. A breakdown of emissions by flag state, ship's type and year of construction is also presented. The modelling system can be used as a decision support tool in the case of issues concerning, e.g., health effects caused by shipping emissions, the construction of emission-based fairway dues systems or emissions trading. The computation of emissions can also be automated, which will save resources in constructing emission inventories. Both the methodologies and the emission computation program can be applied in any sea region in the world, provided that the AIS data from that specific region are available.

scholarly journals New Technologies for Natural Gas Supply in the Baltic Sea – Economic Aspect

2021 ◽  
Vol XXIV (Issue 3B) ◽  
pp. 200-212
Author(s):  
Ewelina Chlopinska ◽  
Diana Kotkowska ◽  
Alexander Autzen
Keyword(s):  
Natural Gas ◽  
Baltic Sea ◽  
New Technologies ◽  
Economic Aspect ◽  
The Baltic Sea ◽  
The Baltic ◽  
Gas Supply

Developing a Strategy for Liquefied Natural Gas Powered Transport Corridors in the Baltic Sea Region

2018 ◽  
pp. 383-399 ◽  
Author(s):  
Josefin Madjidian ◽  
Dimitrios Dalaklis ◽  
Vytatutas Paulauskas ◽  
Lawrence Henesey ◽  
Aykut I. Ölçer ◽  
...  
Keyword(s):  
Natural Gas ◽  
Baltic Sea ◽  
Liquefied Natural Gas ◽  
The Baltic Sea ◽  
Baltic Sea Region ◽  
The Baltic

More sanctions support US interests but not activity

2019 ◽  
Keyword(s):  
Natural Gas ◽  
Baltic Sea ◽  
Central Europe ◽  
The Baltic Sea ◽  
Russian Government ◽  
Content Type ◽  
The Us ◽  
Us Government ◽  
Nord Stream ◽  
The Baltic

Subject US sanctions. Significance The US government views the new Nord Stream 2 gas pipeline, running from Russia to Germany under the Baltic Sea, as increasing European dependence on Russian fuels when the Russian government is reasserting its influence in Eastern and Central Europe. The US administration has imposed extraterritorial sanctions against corporations constructing the pipeline. This may simply be a tactic to encourage more European purchases of US natural gas, but it is also consistent with the US administration’s mercantilist attitude towards trade. Impacts Nord Stream 2 sanctions will hurt some European firms, akin to the effect of US sanctions against European firms still operating in Iran. No evidence shows that the US policy is improving firms’ sales, which may discourage firms from currying favour with the administration. The US corruption probe into Airbus may boost Boeing and Lockheed Martin in the US market and make it harder for China’s COMAC to enter.

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