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Techno-environmental assessment of marine gas turbines for the propulsion of merchant ships

机译:船用燃气轮机推进商船的技术环境评估

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摘要

This research study seeks to evaluate the techno-economic and environmentalimplications of a variety of aero-derivative marine gas turbine cycles that havebeen modelled for the propulsion of different types of merchant ships. It involvesthe installation and operation of gas turbine propulsion systems in differentmarine environmental conditions and aims to evaluate the effect of theaerodynamic and hydrodynamic variations expected to be encountered bythese ships when they navigate across different climates and oceans alongselected fixed trade routes.A combination of simulation tools developed in Cranfield University at theDepartment of Power and Propulsion including the validated gas turbinemodelling and simulation code called “Turbomatch” and the “APPEM”simulation code for the analysis and Prediction of exhaust pollutants have beenused along with the ongoing development of an integrated marine gas turbinepropulsion system simulation platform known as “Poseidon”. It is the mainobjective of this research to upgrade the competence level of “Poseidon” so asto facilitate the conduct of a variety of longer and more complex oceangoingvoyage scenarios through the introduction of an ambient temperature variationnumerical module. Expanding the existing code has facilitated the prediction ofthe effect of varying aerodynamic and hydrodynamic conditions that may beencountered by gas turbine propulsion systems when such ships navigatethrough unstable ocean environments along their fixed trade routes at sea.The consequences of operating the marine gas turbines under ideal weatherconditions has been investigated and compared with a wide range of severeoperating scenarios under unstable weather and sea conditions in combinationwith hull fouling has been assessed. The techno-economic and environmentalbenefits of intercooling/exhaust waste heat recuperation of the ICR model havebeen predicted through the evaluation of different ship propulsion performanceparameters in a variety of voyage analysis leading to the prediction of fuelconsumption quantities, emission of NOx, CO2, CO and UHCs and the estimation of the HPT blade life as well. The different gas turbine cycleconfigurations of the research were found to respond differently when operatedunder various environmental profiles of the ship’s trade route and the number ofunits for each model required to meet the power plant capacity in each scenarioand for each ship was assessed. The study therefore adds to the understandingof the operating costs and asset management of marine gas turbine propulsionsystems of any ocean carrier and in addition it reveals the economic potentialsof using BOG as the main fuel for firing gas turbine propulsion plants of LNGCarriers.
机译:这项研究旨在评估各种航空衍生的海上燃气轮机循环的技术经济和环境意义,这些循环已为不同类型的商船的推进建模。它涉及在不同海洋环境条件下安装和运行燃气轮机推进系统,旨在评估这些船在选定的固定贸易路线上穿越不同气候和海洋航行时预期遇到的空气动力和水动力变化的影响。在克兰菲尔德大学动力与推进系,包括经过验证的燃气轮机建模和仿真代码“ Turbomatch”以及用于排气污染物分析和预测的“ APPEM”仿真代码,以及正在进行中的船用燃气轮机集成推进系统的开发仿真平台称为“波塞冬”。这项研究的主要目的是提高“波塞冬”号的能力水平,以便通过引入环境温度变化数值模块来促进进行各种更长和更复杂的远洋航行情景。扩展现有法规有助于预测空气动力学和流体力学条件变化的影响,这些条件可能在燃气轮机推进系统沿着不稳定的海洋环境沿着固定的海上航行路线航行时会受到燃气轮机推进系统的影响。已经对不稳定的天气和海况下的严酷操作情景进行了调查研究,并与船体污垢相结合进行了评估。通过评估各种航程分析中不同的船舶推进性能参数,可以预测ICR模型的中冷/废气余热回收的技术经济和环境效益,从而预测燃料消耗量,NOx,CO2,CO和UHC的排放量以及HPT刀片寿命的估算。研究发现,在船舶贸易路线的各种环境状况下运行时,研究的不同燃气轮机循环配置具有不同的响应,并且评估了满足每种情况和每艘船舶所需的每种电厂所需的每种型号的单元数。因此,该研究增加了对任何海上运输船的海上燃气轮机推进系统的运营成本和资产管理的理解,并且还揭示了使用BOG作为LNG航母的燃气轮机推进装置燃烧的主要燃料的经济潜力。

著录项

  • 作者

    Bonet Mathias Usman;

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  • 年度 2011
  • 总页数
  • 原文格式 PDF
  • 正文语种 {"code":"en","name":"English","id":9}
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