Research on design of marine heat exchangers from exhaust gas

船用废气换热器设计研究

• 批准号: 23560979
• 负责人: ADACHI Masaki
• 金额: $ 3.24万
• 依托单位: National Maritime Research Institute
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23560979/
• 关键词: 排熱回収; 船舶; フィンチューブ; 排ガス; スート; 熱抵抗; 圧力損失; 熱伝達率; 熱伝導; 熱交換; 総括伝熱係数; 熱交換器; 最適化設計

Basic research for optimized design of marine exhaust heat exchanger (exhaust gas economizer) includes two experiments: adhesion test of real soot as solid component in the exhaust gas on sample of plate finned tube, and air-water heat exchanging test with bank of plate finned tube, coated with thermal insulating paper as quasi-soot. The former one evidenced formation of soot layer with partial detachment to occlude flow path between adjacent fins. the latter one showed that pressure drop through bank of the finned tube was higher than expected design value, and total heat transfer coefficient was lower than expected value due to the insulating paper layer.

船舶排气换热器(省煤器)优化设计的基础研究包括两个实验：真实烟尘作为固体成分在板翅片管试样件上的粘附性试验和板翅片管束表面涂覆保温纸作为准烟尘的空气-水换热试验。前者表明形成了部分脱落的烟尘层，堵塞了相邻翅片之间的流动路径。后一种情况表明，由于隔热纸层的存在，翅片管排出的压力降大于设计值，总换热系数低于预期值。