MEDIUM SIZE LNG TANKER LUBRICATING SYSTEM HEAT EXCHANGER (COOLER) ANALYSIS

Q4 Engineering
L. Stan, Alexandra-Nicoleta Gordеș, Adriana Agape
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引用次数: 0

Abstract

As part of the project, the necessary steps are taken to carry out a calculation of a main engine lubrication system fitted on board an LNG tank vessel with a capacity of 45,000 dwt. The validation of the system is achieved by using a calculation program based on finite element theory (CFD). This is a new ship with a series of innovations regarding the construction of the cargo tanks, which was built in 2018. For sure, this engine is a dual fuel type, powered by marine fuel and natural gas. A general description of the naval lubrication system is made, then a specific calculation is performed for the essentials, such as: the main oil pump, the oil storage tanks, the oil separator, the oil filters and the oil cooler. Next, the focus is on the oil cooler, which is considered an essential part of the installation. In the first part of chapter five it is described in detail, from a constructive and functional point of view, then, using the Ansys program, the corresponding calculation is performed to verify it. A model is made according to the geometrical characteristics, then a series of specific simulations are performed. The main purpose of the simulation is to determine de operational behaviour of this heat exchanger from a temperature point of view and to establish its optimal operational status. This cand be done by establishing a proper simulation model and by conducting a precise simulation stage focused and key parameters. As noted in the final part of this study the temperature contour in the heat exchanger for cooled oil flows form minimum 291 0K to maximum 363 0K, this being its optima operational limit.
中型LNG油轮润滑系统换热器(冷却器)分析
作为该项目的一部分,已采取必要步骤,对一艘容量为45000载重吨的液化天然气储罐船上安装的主机润滑系统进行计算。该系统的验证是通过使用基于有限元理论(CFD)的计算程序来实现的。这是一艘新船,在2018年建造的货舱建造方面进行了一系列创新。当然,这种发动机是一种双燃料类型,由船用燃料和天然气提供动力。对船用润滑系统进行了总体介绍,并对主油泵、储油罐、油分离器、滤油器和油冷却器等关键部件进行了具体计算。接下来,重点是油冷却器,它被认为是安装的重要组成部分。在第五章的第一部分中,从结构和功能的角度对其进行了详细的描述,然后使用Ansys程序进行了相应的计算验证。根据几何特征建立了模型,然后进行了一系列具体的仿真。模拟的主要目的是从温度的角度确定该热交换器的停用行为,并确定其最佳运行状态。这可以通过建立适当的模拟模型和进行精确的模拟阶段重点和关键参数来实现。如本研究的最后部分所述,换热器中冷却油流的温度轮廓从最小291 0K到最大363 0K,这是其最佳运行极限。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
International Journal of Modern Manufacturing Technologies
International Journal of Modern Manufacturing Technologies Engineering-Industrial and Manufacturing Engineering
CiteScore
0.70
自引率
0.00%
发文量
15
期刊介绍: The main topics of the journal are: Micro & Nano Technologies; Rapid Prototyping Technologies; High Speed Manufacturing Processes; Ecological Technologies in Machine Manufacturing; Manufacturing and Automation; Flexible Manufacturing; New Manufacturing Processes; Design, Control and Exploitation; Assembly and Disassembly; Cold Forming Technologies; Optimization of Experimental Research and Manufacturing Processes; Maintenance, Reliability, Life Cycle Time and Cost; CAD/CAM/CAE/CAX Integrated Systems; Composite Materials Technologies; Non-conventional Technologies; Concurrent Engineering; Virtual Manufacturing; Innovation, Creativity and Industrial Development.
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