scholarly journals Energy Efficiency and Environmental Analysis of the Green-Hydrogen Fueled Slow Speed Marine Diesel Engine

2018 ◽  
Vol 6 (6) ◽  
Author(s):  
Nader R. Ammar
Keyword(s):  
Diesel Engine ◽  
Alternative Fuels ◽  
Catalytic Reduction ◽  
Energy Content ◽  
Hydrogen Energy ◽  
Marine Diesel Engine ◽  
Slow Speed ◽  
Marine Diesel ◽  
Hydrogen Substitution ◽  
Scr System

Marine diesel engines are facing challenges to cope with the emission-reduction regulations set by the international maritime organization (IMO). Hydrogen fuel is one of the alternative fuels which can be used to reduce the exhaust gas emissions from ships. The current paper investigates the effect of using diesel-hydrogen dual fuels on the environmental, energetic and exergetic performance parameters of slow speed marine diesel engine. The investigation is performed using Engineering Equation Solver (EES) software package. As a case study, slow speed diesel engine has been investigated. The results obtained revealed that the energetic and exergetic parameters are influenced by engine load and hydrogen substitution percent. The exergy efficiency is increased by 3.65%, 8.20%, 13.99%, and 21.7% for the hydrogen substitution percentages of 10%, 20%, 30%, and 40%, respectively compared with the diesel engine at full load. Environmentally, CO and CO2 emissions are reduced and NOx emissions are increased as the hydrogen energy content increases. Dual fuel engine with input hydrogen energy fractions of 10% and 20% will comply with the required NOx emission regulations set by IMO after using selective catalytic reduction (SCR) system. It will comply with the required regulations with relative percentages of 96.4% and 98.4%, respectively.

Developmetnt of New SCR System for Marine Diesel Engine

2002 ◽  
Vol 2002.4 (0) ◽  
pp. 113-114
Author(s):  
Katsunori YOGO ◽  
Masamichi ISHIKAWA ◽  
Kenji OOE ◽  
Tatsuro TSUKAMOTO
Keyword(s):  
Diesel Engine ◽  
Marine Diesel Engine ◽  
Marine Diesel ◽  
Scr System

scholarly journals Model tests of a marine diesel engine powered by a fuel-alcohol mixture

2021 ◽  
Author(s):  
Marcin Zacharewicz ◽  
Tomasz Kniaziewicz
Keyword(s):  
Mathematical Model ◽  
Diesel Engine ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Diesel Oil ◽  
Marine Diesel Engine ◽  
Engine Model ◽  
Marine Engines ◽  
Marine Diesel ◽  
The Mathematical Model

The paper presents the results of model and empirical tests conducted for a marine diesel engine fueled by a blend of n-butanol and diesel oil. The research were aimed at assessing the usefulness of the proprietary diesel engine model in conducting research on marine engines powered by alternative fuels to fossil fuels. The authors defined the measures of adequacy. On their basis, they assessed the adequacy of the mathematical model used. The analysis of the results of the conducted research showed that the developed mathematical model is sufficiently adequate. Therefore, both the mathematical model and the computer program based on it will be used in further work on supplying marine engines with mixtures of diesel oil and biocomponents.

scholarly journals Study on Optimization Simulation of Scr Denitration System for Marine Diesel Engine

2018 ◽  
Vol 25 (s3) ◽  
pp. 13-21
Author(s):  
Jun Du ◽  
Ruo Nan Li ◽  
Xin Wu ◽  
Yan Zhang
Keyword(s):  
Diesel Engine ◽  
Gas Flow ◽  
Rapid Development ◽  
Marine Diesel Engine ◽  
Engine Exhaust ◽  
Shipbuilding Industry ◽  
Optimization Simulation ◽  
Marine Diesel ◽  
System Selection ◽  
Scr System

Abstract With the rapid development of shipbuilding industry exhaust world is also very harmful one kind of environmental issues, and the ship marine diesel engine exhaust gas is mainly produced, so in recent years it has developed a diesel engine SCR system. SCR system can control emissions of nitrogen oxides in the exhaust of vessel, furthermore air pollution can be reduced. The main goal of article was using fluent software to correct SCR system selection and flue gas flow under different size best deflector arrangement is simulated. Next goal is further optimize the structure of the SCR system.

scholarly journals Examination of Suitable Feed Quantity of Cylinder Oil to Large 2-stroke Slow Speed Marine Diesel Engine

1993 ◽  
Vol 28 (4) ◽  
pp. 286-293
Author(s):  
Tadahiro Kurosawa ◽  
Katsuharu Kobori ◽  
Kaname Tanaka ◽  
Yoshikazu Nagai
Keyword(s):  
Diesel Engine ◽  
Marine Diesel Engine ◽  
Slow Speed ◽  
Marine Diesel
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