试析船舶低速柴油机余热综合回收系统 Analysis of the Comprehensive Residual Heat Recovery System of Ship Low-speed Diesel Engine
2021-11-30张少杰ZHANGShao-jie
张少杰 ZHANG Shao-jie
摘要:船舶运输会对大量燃料进行消耗,而且出于使船舶在二氧化碳方面的排放有所减少的目的,国际海事组织对EEDI法案进行了颁布,如果船舶的能耗未能达标,则船东应该对定额罚金进行缴纳,以此弥补船舶运输对于环境的伤害。在排放法规越来越严格的背景下,船舶行业需研究余热回收技术。本文基于此,对船舶低速柴油机的余热综合回收系统进行了浅要地分析,以供业界参考。
Abstract: Ship transport will consume a large amount of fuel, and for the purpose of reducing carbon dioxide emissions, the International Maritime Organization issued the EEDI Act, if the ship energy consumption fails to meet the standard, the owner should pay the fixed fine to make up for the damage to the environment.In the context of the increasingly stringent emission regulations, the ship industry needs to study the residual heat recovery technology.Based on this, the residual heat recovery system of low speed diesel engine is analyzed for reference in the industry.
关键词:船舶;低速柴油机;余热综合回收系统
Key words: ship;low-speed diesel engine;waste heat comprehensive recovery system
中图分类号:U664.21 文献标识码:A 文章编号:1674-957X(2021)22-0047-02
0 引言
近年来,我国加大了研究船舶节能技术的力度,研究表明,在船舶运营时,船舶的主机会消耗大量能源,不仅投资费用很高,还会产生很多的燃油成本。所以需对船舶主机的燃料在燃烧时产生的能量进行高效利用。柴油机运行时未被利用的热量是余热。因为将船舶主机当作出发点,对提升能量利用效率的方法进行研究比较困难,所以需采取回收余热的方式,以此实现使能量利用率得到提升的目标。
1 船舶柴油机的余热回收系统
在船舶柴油机的余热回收系统中,燃料燃烧的位置是柴油机的气缸内部,少数排气旁通到动力涡轮,而余下部分排气会经过涡轮增压器,待全部排气汇合之后会一同进至余热锅炉,最终排向大气。对余热锅炉给水而言,其在进至余热锅炉之前会依序流经缸套水换热器以及空冷器完成预热,水会在余热锅炉之中加热,待转化成蒸汽状态之后,再进到蒸汽轮机之中开始做功。……
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