Application of Generator Capacity Design Technique Considering the Operational Characteristics of Container Ships

The advantages of economies of scale in marine logistics and transportation can be obtained by building bigger ships. As ship sizes increase, so do their propulsion systems, requiring that stable and high-efficiency power must continuously be supplied. In general, ships’ operations require power low...

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Main Authors: Jong-Hak Lee, Ji-Hyun Oh, Jin-Seok Oh
Format: Article
Language:English
Published: MDPI AG 2022-05-01
Series:Electronics
Subjects:
Online Access:https://www.mdpi.com/2079-9292/11/11/1703
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author Jong-Hak Lee
Ji-Hyun Oh
Jin-Seok Oh
author_facet Jong-Hak Lee
Ji-Hyun Oh
Jin-Seok Oh
author_sort Jong-Hak Lee
collection DOAJ
description The advantages of economies of scale in marine logistics and transportation can be obtained by building bigger ships. As ship sizes increase, so do their propulsion systems, requiring that stable and high-efficiency power must continuously be supplied. In general, ships’ operations require power lower than the installed generator capacity. However, when the generator is operated at a low load, its efficiency decreases. In this study, based on actual operation data, the load requirements for each operation mode were analyzed, and a diesel-generator-based power system was designed. We present a generator capacity optimization calculation method through generator capacity. The proposed strategy maximizes the space utilization and efficiency of the ship while minimizing the generator’s power consumption. The generator’s fuel consumption, operating time, and efficiency were compared and analyzed to verify the proposed strategy’s efficacy. In conclusion, the proposed strategy demonstrated the effect of reducing fuel consumption by 2.2%, increasing generator efficiency by 8.4%, and reducing costs by 5.14% compared to the existing onboard generator capacity for the same vessel.
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spelling doaj.art-78b1655647d449f79f9e903ffc07f9532023-11-23T13:54:30ZengMDPI AGElectronics2079-92922022-05-011111170310.3390/electronics11111703Application of Generator Capacity Design Technique Considering the Operational Characteristics of Container ShipsJong-Hak Lee0Ji-Hyun Oh1Jin-Seok Oh2Division of Marine System Engineering, Korea Maritime and Ocean University, Busan 49112, KoreaDivision of Marine System Engineering, Korea Maritime and Ocean University, Busan 49112, KoreaDivision of Marine System Engineering, Korea Maritime and Ocean University, Busan 49112, KoreaThe advantages of economies of scale in marine logistics and transportation can be obtained by building bigger ships. As ship sizes increase, so do their propulsion systems, requiring that stable and high-efficiency power must continuously be supplied. In general, ships’ operations require power lower than the installed generator capacity. However, when the generator is operated at a low load, its efficiency decreases. In this study, based on actual operation data, the load requirements for each operation mode were analyzed, and a diesel-generator-based power system was designed. We present a generator capacity optimization calculation method through generator capacity. The proposed strategy maximizes the space utilization and efficiency of the ship while minimizing the generator’s power consumption. The generator’s fuel consumption, operating time, and efficiency were compared and analyzed to verify the proposed strategy’s efficacy. In conclusion, the proposed strategy demonstrated the effect of reducing fuel consumption by 2.2%, increasing generator efficiency by 8.4%, and reducing costs by 5.14% compared to the existing onboard generator capacity for the same vessel.https://www.mdpi.com/2079-9292/11/11/1703fuel consumptiongenerator capacityship modegenerator capacity optimizationpower efficiency
spellingShingle Jong-Hak Lee
Ji-Hyun Oh
Jin-Seok Oh
Application of Generator Capacity Design Technique Considering the Operational Characteristics of Container Ships
Electronics
fuel consumption
generator capacity
ship mode
generator capacity optimization
power efficiency
title Application of Generator Capacity Design Technique Considering the Operational Characteristics of Container Ships
title_full Application of Generator Capacity Design Technique Considering the Operational Characteristics of Container Ships
title_fullStr Application of Generator Capacity Design Technique Considering the Operational Characteristics of Container Ships
title_full_unstemmed Application of Generator Capacity Design Technique Considering the Operational Characteristics of Container Ships
title_short Application of Generator Capacity Design Technique Considering the Operational Characteristics of Container Ships
title_sort application of generator capacity design technique considering the operational characteristics of container ships
topic fuel consumption
generator capacity
ship mode
generator capacity optimization
power efficiency
url https://www.mdpi.com/2079-9292/11/11/1703
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