Operation-dependent exergetic sustainability assessment and environmental analysis on a large tanker ship utilizing Organic Rankine cycle system
Operation-dependent exergetic sustainability assessment and environmental analysis on a large tanker ship utilizing Organic Rankine cycle system
This study focuses on the novel perspective of marine ORC systems with a detailed marine diesel generator plant simulation integrated with an ORC system model to evaluate environmental impacts and energy efficiency increments by reducing the number or the load of generators by using the ORC system support during operation. It is aimed to analyze the fuel-saving potential and sustainability performance of the power generation plant of a tanker ship when an ORC is integrated. The thermodynamic system simulation determined the fuel consumption of the plant within two years regarding six operation modes. The results show that the optimum working fluid is R1336mzz (Z) for the evaporation pressure of 16 bar. Organic Rankine cycle system integration provided a total fuel-saving of 15% from diesel generators and the total fuel consumption of the vessel was reduced by 5.16%. The sustainability performance of the system was ensured with a novel operation-dependent approach that enhances the exergetic sustainability assessment by considering the operation modes of the vessel and the time spent on these operations for a certain time. The load reduction in the generators resulted in better sustainability performance and the operation-dependent indicators were affected by operations having more working hours.
Exergetic sustainability assessment, Marine engineering, Organic Rankine cycle, Ship power system, Thermodynamic analysis, Waste heat recovery
Konur, Olgun
4d099dab-c4ae-4baa-a93a-cf6471c304e6
Yuksel, Onur
5138ebb7-a0f3-4308-907c-5baf1dd35360
Aykut Korkmaz, S.
959074e1-2ec0-405c-b1ec-eeababef216b
Ozgur Colpan, C.
b3fce544-afd7-4815-a5cb-d947797a9dbc
Saatcioglu, Omur Y.
08731fb2-f9d9-4aa6-8d84-d66e9a4fd30b
Koseoglu, Burak
f32b9b95-a7ff-4ff2-baf5-971b4fe50a7f
24 September 2022
Konur, Olgun
4d099dab-c4ae-4baa-a93a-cf6471c304e6
Yuksel, Onur
5138ebb7-a0f3-4308-907c-5baf1dd35360
Aykut Korkmaz, S.
959074e1-2ec0-405c-b1ec-eeababef216b
Ozgur Colpan, C.
b3fce544-afd7-4815-a5cb-d947797a9dbc
Saatcioglu, Omur Y.
08731fb2-f9d9-4aa6-8d84-d66e9a4fd30b
Koseoglu, Burak
f32b9b95-a7ff-4ff2-baf5-971b4fe50a7f
Konur, Olgun, Yuksel, Onur, Aykut Korkmaz, S., Ozgur Colpan, C., Saatcioglu, Omur Y. and Koseoglu, Burak
(2022)
Operation-dependent exergetic sustainability assessment and environmental analysis on a large tanker ship utilizing Organic Rankine cycle system.
Energy, 262, [125477].
(doi:10.1016/j.energy.2022.125477).
Abstract
This study focuses on the novel perspective of marine ORC systems with a detailed marine diesel generator plant simulation integrated with an ORC system model to evaluate environmental impacts and energy efficiency increments by reducing the number or the load of generators by using the ORC system support during operation. It is aimed to analyze the fuel-saving potential and sustainability performance of the power generation plant of a tanker ship when an ORC is integrated. The thermodynamic system simulation determined the fuel consumption of the plant within two years regarding six operation modes. The results show that the optimum working fluid is R1336mzz (Z) for the evaporation pressure of 16 bar. Organic Rankine cycle system integration provided a total fuel-saving of 15% from diesel generators and the total fuel consumption of the vessel was reduced by 5.16%. The sustainability performance of the system was ensured with a novel operation-dependent approach that enhances the exergetic sustainability assessment by considering the operation modes of the vessel and the time spent on these operations for a certain time. The load reduction in the generators resulted in better sustainability performance and the operation-dependent indicators were affected by operations having more working hours.
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More information
Accepted/In Press date: 15 September 2022
e-pub ahead of print date: 19 September 2022
Published date: 24 September 2022
Additional Information:
Funding Information: some of studies found in the literature utilize the ORC systems to support ship power distribution systems. Grljušić et al. [31] conducted a thermodynamic analysis of a supercritical ORC integrated cogeneration plant that utilizes main-engine exhaust, jacket water, and scavenge air waste heats to assist the marine power generation plant. The system that uses R245a as the working fluid can meet the whole load. Mondejar et al. [32] provided an analysis of the utilization of ORC system to support the electricity grid of a passenger ship, and the system met 22% of the total power demand. Pan et al. [33] carried out a parametric thermo-economic analysis and optimization of supercritical CO2 recompression Brayton cycle integrated WHRS for a container vessel. The optimized system provides EEDI and fuel consumption decrease of 1.02 and 1.01% by improving the thermal efficiency by 3.23%.
Keywords:
Exergetic sustainability assessment, Marine engineering, Organic Rankine cycle, Ship power system, Thermodynamic analysis, Waste heat recovery
Identifiers
Local EPrints ID: 487090
URI: http://eprints.soton.ac.uk/id/eprint/487090
ISSN: 0360-5442
PURE UUID: 11f25345-d401-44ae-862e-8a819bd02b3f
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Date deposited: 13 Feb 2024 17:32
Last modified: 18 Mar 2024 04:15
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Contributors
Author:
Olgun Konur
Author:
Onur Yuksel
Author:
S. Aykut Korkmaz
Author:
C. Ozgur Colpan
Author:
Omur Y. Saatcioglu
Author:
Burak Koseoglu
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