【摘要】 针对LNG运输船锅炉在燃烧低温液态LNG和BOG的同时会释放大量未利用冷能的问题,提出LNG运输船冷能综合利用方案。采用Aspen HYSYS软件,对LNG运输船的冷能利用系统进行模拟设计,包含纵向两级朗肯循环发电、海水淡化、船舶冷库和船舶空调的冷能梯级利用系统。对NG-2点的温度、朗肯循环部分的冷凝压力和蒸发压力等主要参数进行优化,确定最优参数设置。研究成果为船舶冷能的利用提供了理论指导和技术支持,有利于船舶节能减排,实现绿色航运。更多还原

【Abstract】 Aiming at the problem of carrier’s fuel boiler releasing a large amount of unused cold energy when consuming LNG(liquefied natural gas) and BOG(boil off gas), the paper puts forward a cold energy comprehensive utilization plan of LNG carriers, The cold energy utilization system which includes two levels of Lang Ken cycle power generation, water desalination, carrier cold storage and the air conditioning is simulated by Aspen HYSYS software. The main parameters such as the temperatures of NG-2 parts, the condensation pressure and evaporation pressure of the Lang Ken cycle of condensing pressure are optimized. The optimal parameter settings are determined. The research results provide theoretical guidance and technical support for the use of cold energy of carriers, which is conducive to the energy conservation and emission reduction of carriers and the realization of green shipping.更多还原