Abstract
Marine transportation facilitates the transportation of fuels and goods over long distances cost-effectively, but their environmental impact has increased due to the utilization of fossil fuels. This paper presents a new marine engine design comprising a steam Rankine cycle, gas Brayton cycle, and solid oxide fuel cell to replace a two-stroke internal combustion engine. Hydrogen, methane, dimethyl ether, ethanol, and methanol are selected as eco-friendly fuels. This hybrid combined engine is attached to a multi-effect desalination unit to take the advantage of waste energy from the exhaust gases. The engine is thermodynamically analyzed using the Aspen Plus software to assess its performance energetically and exergetically. It is found that the engine's total power is increased by 40% to an average of 15,546 kW with average thermal and exergetic efficiencies of 61% and 43%, respectively. The maximum power reaches 16,780 kW with maximum carbon emission reductions of 53% and a minimum specific fuel consumption of 337 g kWh−1 which is a reduction of 17%. In addition, the waste energy is used to deliver 20.3 kg s−1 freshwater by desalinating seawater. The proposed engine system has better performance and less environmental impact, which makes it a better choice than traditional engines.
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Change history
09 January 2023
A Correction to this paper has been published: https://doi.org/10.1007/s10973-022-11908-1
Abbreviations
- A :
-
Area (cm2)
- D :
-
Diffusivity (m2 s−1)
- \(E\) :
-
Nernst voltage (V)
- \(\dot{E}\) :
-
Energy rate (kW)
- ex:
-
Specific physical/chemical exergy flow
- \(\dot{Ex}\) :
-
Exergy flow (kw)
- F :
-
Faraday constant (C mol−1)
- \(\overline{g }\) :
-
Gibbs free energy (kJ mol−1)
- h :
-
Specific enthalpy (kJ kg−1)
- \(i\) :
-
Current density (A cm−2)
- I :
-
Thermoelectric current (A)
- N :
-
Number of cells/stacks
- \(\dot{m}\) :
-
Mass flow rate (kg s−1)
- P :
-
Pressure (kPa)
- \(\dot{Q}\) :
-
Heat rate (kW)
- \(\overline{R }\) :
-
Molar gas constant (J mol−1 K−1)
- s :
-
Specific entropy (kJ kg−1 K−1)
- T :
-
Temperature (K)
- V:
-
Voltage (V)
- \(\dot{W}\) :
-
Power (kW)
- an:
-
Anode
- ca:
-
Cathode
- D:
-
Destruction
- e:
-
Electrical
- t:
-
Total/overall
- \(\psi\) :
-
Exergetic efficiency (%)
- \(\eta\) :
-
Thermal/electric efficiency (%)
- \(\delta\) :
-
Thickness (µm)
- \(\rho\) :
-
Resistivity (Ω m)
- \(\varepsilon\) :
-
Porosity (−)
- BR-BL:
-
Boiler burner
- C:
-
Compressor
- CC:
-
Combustion chamber
- CFH:
-
Closed feedwater heater
- CN:
-
Condenser
- D:
-
Desalination
- FW:
-
Freshwater
- GBC:
-
Gas Brayton cycle
- GTHX:
-
Reheater
- HP:
-
High pressure
- HX:
-
Heat exchanger
- LNG:
-
Liquified natural gas
- LP:
-
Low pressure
- P:
-
Pumps/power
- SFC:
-
Specific fuel consumption
- SL:
-
Brine
- SOFC:
-
Solid oxide fuel cell
- SR:
-
Steam reforming
- SRC:
-
Steam Rankine cycle
- ST:
-
Steam turbine
- SW:
-
Seawater
- T:
-
Gas turbine
- WGS:
-
Water gas shift
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The authors acknowledge the financial support provided by Transport Canada through its Clean Transportation Program—Research and Development and the Natural Sciences and Engineering Research Council of Canada (NSERC).
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The corresponding author of paper entitled “Investigation of A Hybridized Combined Cycle Engine with SOFC System for Marine Applications” informs all the authors’ individual contributions using the relevant Credit roles, which are listed below. Shaimaa Seyam “the corresponding author”: methodology, software, date curation, writing original draft preparation, investigation, visualization, editing Ibrahim Dincer: Supervision, conceptualization, funding acquisition, writing- Reviewing, and editing Martin Agelin-Chaab: co-supervision, conceptualization, and funding acquisition, writing- Reviewing, and editing .
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Seyam, S., Dincer, I. & Agelin-Chaab, M. Investigation of a hybridized combined cycle engine with SOFC system for marine applications. J Therm Anal Calorim 148, 8323–8344 (2023). https://doi.org/10.1007/s10973-022-11765-y
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DOI: https://doi.org/10.1007/s10973-022-11765-y