Effectiveness of the Speed Reduction Strategy on Exhaust Emissions and Fuel Oil Consumption of a Marine Generator Engine for DC Grid Ships

Chien, Pham Van; Kim, Hanseok; Choi, Jae-Hyuk; Nyongesa, Antony John; Kim, Jong-Su; Jeon, Hyeonmin; Lee, Won-Ju

doi:10.3390/jmse10070979

Cited by 6 publications

(2 citation statements)

References 18 publications

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“…However, when the ship is at the jetty, only the generators are operated to run the systems and equipment onboard. Thus, there is more production of toxic exhaust gaseous during sailing compared to alongside conditions (Pham et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Concentration of Indoor Air Chemical Parameters at Different Ship Conditions and Engine Sequences

Tamsi,

Zahaba,

Kamaruddin

et al. 2023

ASMScJ

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Good indoor air quality (IAQ) is crucial for navy crew due to longer periods onboard, especially during pandemic. Increased frequency of the ship’s operations is required to prevent trespassing and illegal border crossings. This study aims to determine and compare the indoor air chemical parameters; carbon dioxide (CO₂), carbon monoxide (CO), and total volatile organic compounds (TVOC) at different ship conditions (alongside and sailing) and engine sequences (idling, cruising, full ahead and slowing down). The parameters were measured in four compartments, following the Industry Code of Practice on Indoor Air Quality 2010 (ICOP IAQ 2010). At different ship conditions, there were significant differences of indoor air chemical parameters in the common room, electrical room, and accommodation area 2. However, no trend of higher or lower concentrations was observed between the conditions due to ship operation, human activities, and occupancy. The engine sequences affect the indoor air chemical parameters, where the CO concentrations were recorded higher in all compartments, especially when the engine was running at 1000 rpm. In conclusion, the navy crew could be exposed to unacceptable IAQ conditions regardless of ship conditions and engine sequences. It is good to highlight that good ventilation is crucial to dilute the air pollutants onboard.

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Section: Introductionmentioning

confidence: 99%

Concentration of Indoor Air Chemical Parameters at Different Ship Conditions and Engine Sequences

Tamsi,

Zahaba,

Kamaruddin

et al. 2023

ASMScJ

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“…In these studies, the effect of scavenging air temperature on the combustion and emission of the engine was also studied. In another area of research, the effect of engine speed on engine performance and emissions was investigated in [26].…”

Section: Introductionmentioning

confidence: 99%

Impacts of Charge Air Parameters on Combustion and Emission Characteristics of a Diesel Marine Engine

Nguyen,

Vu,

et al. 2023

Thermo

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In this study, the operating processes of a four-stroke diesel marine engine from the intake valve closing (IVC) to the exhaust valve opening (EVO) at numerous different charge air conditions were simulated with the AVL FIRE code. The CFD models were validated with engine shop-test technical data. The results showed that increasing the charge air pressure without cooling decreased the actual amount of air supplied to the cylinder. As a result, the combustion process was suboptimal, resulting in a reduction in engine power and an increase in specific fuel oil consumption (SFOC). In addition, less air to cool the combustion chamber coupled with elevated charge air temperatures increased the in-cylinder peak temperature, leading to a significant increase in thermal nitric oxide (NO) emissions. In contrast, by cooling the charge air after turbocharging, the actual amount of air entering the engine cylinders was increased. The abundant charge air helped to cool the combustion chamber better, significantly reducing the in-cylinder peak temperature and then the thermal NO formation. Better combustion also increased engine power, which, in turn, reduced SFOC. In addition, carbon dioxide (CO2) and soot emissions were also reduced.

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Optimal operation of battery storage systems in standalone and grid-connected DC microgrids using parallel metaheuristic optimization algorithms

Grisales-Noreña¹,

Ocampo-Toro²,

Montoya³

et al. 2023

Journal of Energy Storage

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Effectiveness of the Speed Reduction Strategy on Exhaust Emissions and Fuel Oil Consumption of a Marine Generator Engine for DC Grid Ships

Cited by 6 publications

References 18 publications

Concentration of Indoor Air Chemical Parameters at Different Ship Conditions and Engine Sequences

Concentration of Indoor Air Chemical Parameters at Different Ship Conditions and Engine Sequences

Impacts of Charge Air Parameters on Combustion and Emission Characteristics of a Diesel Marine Engine

Optimal operation of battery storage systems in standalone and grid-connected DC microgrids using parallel metaheuristic optimization algorithms

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