Journal of Marine Engineering and Technology最新文献_第10页

LNG a clean fuel – the underlying potential to improve thermal efficiency 液化天然气是一种清洁燃料——提高热效率的潜在潜力

IF 2.6 4区工程技术

Journal of Marine Engineering and Technology Pub Date : 2020-10-15 DOI: 10.1080/20464177.2020.1827491

Nawin Ranjan Sharma, Dalaklis Dimitrios, A. Òlçer, N. Nikitakos

{"title":"LNG a clean fuel – the underlying potential to improve thermal efficiency","authors":"Nawin Ranjan Sharma, Dalaklis Dimitrios, A. Òlçer, N. Nikitakos","doi":"10.1080/20464177.2020.1827491","DOIUrl":"https://doi.org/10.1080/20464177.2020.1827491","url":null,"abstract":"The presence of sulphur in marine fuel oil relates to health and environmental concerns, as the respective combustion generates sulphur dioxide (SO2). The only method to control this SO2 generation is to limit the quantity of sulphur in the fuel. Shipping activities, although not the main source, contribute around 13% of the total anthropogenic SO2 IMO-3GHG [2015. Third IMO Greenhouse Gas Study, 3rd ed. London: International Maritime Organisation]; on a positive note, this is expected to reduce after the worldwide implementation of 0.5% sulphur regulation for marine fuel. One of the accepted methods to comply with the regulatory criteria is the use of alternate fuel, i.e. liquefied natural gas (LNG). The analysis in hand discusses the potential benefits of LNG as a marine fuel. The technical limitation associated with the formation of sulphuric acid (H2SO4) is directly related to its Dew point, as it condenses below 160°C and causes acidic corrosion of machinery components. The prevalent combustion-based systems are maintaining a safe and economical exhaust gas range between 150°C and 170°C. If the exhaust gas temperature is higher than 170°C excessive heat is lost, which makes the plant inefficient; in contrast, if the temperature drops below 150°C there is the possibility of corrosion damage to the equipment. Considering that LNG is absolutely free from sulphur contamination, it can be used to overcome this technical limitation and add to the overall thermal efficiency due to the availability of increased operating range.","PeriodicalId":50152,"journal":{"name":"Journal of Marine Engineering and Technology","volume":"21 1","pages":"111 - 124"},"PeriodicalIF":2.6,"publicationDate":"2020-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/20464177.2020.1827491","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49420032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

An integrated FMEA and MCDA based risk management approach to support life extension of subsea facilities in high-pressure–high-temperature (HPHT) conditions 基于FMEA和MCDA的综合风险管理方法，支持在高压-高温（HPHT）条件下延长海底设施的寿命

IF 2.6 4区工程技术

Journal of Marine Engineering and Technology Pub Date : 2020-10-13 DOI: 10.1080/20464177.2020.1827486

M. Shafiee, I. Animah

{"title":"An integrated FMEA and MCDA based risk management approach to support life extension of subsea facilities in high-pressure–high-temperature (HPHT) conditions","authors":"M. Shafiee, I. Animah","doi":"10.1080/20464177.2020.1827486","DOIUrl":"https://doi.org/10.1080/20464177.2020.1827486","url":null,"abstract":"The majority of facilities installed in offshore oil and gas fields during the 1980s and 1990s were designed to operate in ‘normal’ conditions. However, during the operational life of the fields, some new high pressure/high temperature (HPHT) wells may be discovered and tied back to older facilities. Operating these facilities beyond their design parameters in harsh environments may lead to catastrophic failures, resulting in significant economic losses and environmental problems. Managing the risks associated with failure of ageing subsea facilities in HPHT environments is considered as a very complex and critical task. To overcome such challenge, there is a need for development of decision-making methods that are capable of estimating precisely the risks associated with HPHT conditions as well as prioritising the risk mitigation and remediation strategies. This paper aims to propose an integrated risk management framework – based on Failure Mode and Effects Analysis (FMEA) approach and a hybrid Multi-Criteria Decision Analysis (MCDA) model – for evaluating the risks and prioritising mitigation strategies over the extended lifetime of subsea facilities in HPHT environments. For the purpose of illustrating the model, a case study of subsea manifold and flowlines is provided and the results are evaluated and discussed. Our findings indicate that the proposed approach offers significant improvement to the classical risk management processes applied to subsea oil and gas facilities as it can assist asset managers, risk analyst, regulators and policy makers with a decision model which considers both subjective (qualitative) judgements and objective (quantitative) evaluation measures.","PeriodicalId":50152,"journal":{"name":"Journal of Marine Engineering and Technology","volume":"21 1","pages":"189 - 204"},"PeriodicalIF":2.6,"publicationDate":"2020-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/20464177.2020.1827486","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49068530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Ship acceleration motion under the action of a propulsion system: a combined empirical method for simulation and optimisation 船舶在推进系统作用下的加速运动：一种模拟和优化的经验组合方法

IF 2.6 4区工程技术

Journal of Marine Engineering and Technology Pub Date : 2020-10-07 DOI: 10.1080/20464177.2020.1827490

S. Tavakoli, S. Najafi, E. Amini, Abbas Dashtimansh

{"title":"Ship acceleration motion under the action of a propulsion system: a combined empirical method for simulation and optimisation","authors":"S. Tavakoli, S. Najafi, E. Amini, Abbas Dashtimansh","doi":"10.1080/20464177.2020.1827490","DOIUrl":"https://doi.org/10.1080/20464177.2020.1827490","url":null,"abstract":"The current paper presents a simple mathematical model for replication of the transient acceleration motion of displacement hulls in calm water under the action of a propulsion system. Different empirical methods are coupled, and an operational speed problem is solved in the time domain. The resistance of the ship is calculated by using the Holtrop method. The values of thrust force, torque and propeller efficiency are computed by using B-Series empirical equations. The acceleration motion of the vessel, which is triggered as the engine starts to work, is simulated by solving a set of first-order differential equations, which are discretised in the time domain. It is shown that different propellers can lead to different transient and steady behaviours of the vessel. Finally, using a genetic algorithm library, it is demonstrated that the method can be helpful and be easily linked to the design process. Moreover, an optimisation study is performed, showing that, the developed method provides an efficient propeller, under the action of which ship reaches the maximum possible speed in the earliest possible time with the highest efficiency for the propeller. The current method can be useful in the mathematical reproduction of the ship-propeller-engine, which needed to be modified in future.","PeriodicalId":50152,"journal":{"name":"Journal of Marine Engineering and Technology","volume":"20 1","pages":"200 - 215"},"PeriodicalIF":2.6,"publicationDate":"2020-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/20464177.2020.1827490","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49451260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Membrane desalination of ballast water using thermoelectric energy from waste heat 利用废热热电能对压载水进行膜脱盐

IF 2.6 4区工程技术

Journal of Marine Engineering and Technology Pub Date : 2020-10-06 DOI: 10.1080/20464177.2020.1827487

V. Gude

引用次数: 4

Overview of performing shore-to-ship and ship-to-ship compatibility studies for LNG bunker vessels 液化天然气船用岸船和船船兼容性研究概述

IF 2.6 4区工程技术

Journal of Marine Engineering and Technology Pub Date : 2020-10-01 DOI: 10.1080/20464177.2020.1827489

J. H. Tam

引用次数: 7

Failure loads analysis of corroded pipe repaired by composite material under tension and internal pressure 复合材料修复腐蚀管道在拉力和内压作用下的失效载荷分析

IF 2.6 4区工程技术

Journal of Marine Engineering and Technology Pub Date : 2020-09-29 DOI: 10.1080/20464177.2020.1826675

Y. Zhang, Ziyun Cheng, Zhike Jia

{"title":"Failure loads analysis of corroded pipe repaired by composite material under tension and internal pressure","authors":"Y. Zhang, Ziyun Cheng, Zhike Jia","doi":"10.1080/20464177.2020.1826675","DOIUrl":"https://doi.org/10.1080/20464177.2020.1826675","url":null,"abstract":"ABSTRACT Pipeline repair plays an important role in safe pipeline operation. Composite material repair technology has been widely used in pipeline repair due to its advantage of light weight and low cost. In this paper, the failure loads of repaired pipe with composite under tension and internal pressure are analysed by experiments, Finite Element Method (FEM) and theoretical method, and simple formula of failure loads is obtained based on theoretical analysis and verified by FEM and experiments. First, the tension experiment shows that debonding happens in the repaired pipe before its fracture, and then the debonding details are showed in FEM results considering the adhesive debonding criteria, finally a simple formula expression is obtained for the failure tension loads based on the analysis of interface stresses, and the results are almost consistent with the experimental method and FEM. Similarly, for the case under internal pressure, the blasting failure loads are obtained for the repaired pipe based on the theoretical analysis, which are consistent with FEM results.","PeriodicalId":50152,"journal":{"name":"Journal of Marine Engineering and Technology","volume":"21 1","pages":"178 - 188"},"PeriodicalIF":2.6,"publicationDate":"2020-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/20464177.2020.1826675","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45218817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

An energy-efficient nonlinear robust track keeping control algorithm for the Maritime Silk Road 一种高效的海上丝绸之路非线性鲁棒跟踪控制算法

IF 2.6 4区工程技术

Journal of Marine Engineering and Technology Pub Date : 2020-09-01 DOI: 10.1080/20464177.2019.1632142

Guangping Yang, Xianku Zhang, Yongxiao Feng

引用次数: 3

Exergoeconomic and air emission analyses for marine refrigeration with waste heat recovery system: a case study 船用余热回收制冷系统的经济性和空气排放分析：一个案例研究

IF 2.6 4区工程技术

Journal of Marine Engineering and Technology Pub Date : 2020-09-01 DOI: 10.1080/20464177.2019.1656324

Veysi Başhan, Görkem Kökkülünk

{"title":"Exergoeconomic and air emission analyses for marine refrigeration with waste heat recovery system: a case study","authors":"Veysi Başhan, Görkem Kökkülünk","doi":"10.1080/20464177.2019.1656324","DOIUrl":"https://doi.org/10.1080/20464177.2019.1656324","url":null,"abstract":"Nowadays, shipping industry faces challenges of energy efficiency and reducing of fuel consumption. Moreover, Waste Heat Recovery Systems (WHRS) regarding energy efficiency have a larger focus to utilise the heat energy lost from all thermal processes from ship engines. WHRS is one of the best methods to reduce fuel consumption and implicitly emissions. Refrigeration system, which can be evaluated as one of these systems, has a high energy efficiency potential on ships. In this study, exergoeconomic and air emission analyses of a case study ship named M/V Ince Ilgaz have been performed by comparing Vapour Compression Refrigeration System (VCRS) and VCRS with WHRS on exergy destruction and Second Law Efficiency in case of variable sea water temperature with 15 different refrigerants. Furthermore, a novel proposed WHRS is used for preheating of an accommodation water which leads reducing of exergy destruction about 9.31–10.60% while using R134A refrigerant. The fuel consumption due to refrigerant compressor has a 36% increase with the 10°C increment of sea water temperature. The increase of CO2, SO2, NO x and Particular Matter (PM) emissions is found about 183.40, 3.10, 4.65 and 0.47 tonnes, by the increase of sea water temperature from 20°C to 30°C for the fleet of 15 ships, respectively. In conclusion, using waste heat recovery on refrigeration system could directly reduce fuel consumption and air emissions.","PeriodicalId":50152,"journal":{"name":"Journal of Marine Engineering and Technology","volume":"19 1","pages":"147 - 160"},"PeriodicalIF":2.6,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/20464177.2019.1656324","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48868376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Hydrodynamic analysis of a deep-sea pressure equaliser 深海压力均衡器的水动力分析

IF 2.6 4区工程技术

Journal of Marine Engineering and Technology Pub Date : 2020-09-01 DOI: 10.1080/20464177.2019.1574952

Haocai Huang, Wenke Ge, Canjun Yang, Yan Wei

引用次数: 3

A vision system for pose estimation of an underwater robot 用于水下机器人姿态估计的视觉系统

IF 2.6 4区工程技术

Journal of Marine Engineering and Technology Pub Date : 2020-07-04 DOI: 10.1080/20464177.2020.1783883

K. Holak, P. Cieślak, P. Kohut, M. Giergiel

引用次数: 2