摘要
为提高有机液体脱氢反应器的传热性能,采用热管和泡沫铜强化传热技术,设计一种适用于有机液体脱氢的新型换热器。以空气为换热工质,通过实验分析入口温度和流量对传热量、传热系数、效能和?效率等传热性能的影响,并对比分析泡沫铜与热管对换热器传热性能的强化程度。结果表明:所用热管在有机液体脱氢温度下的传热效果良好,当工作温度为473 K时,当量导热系数达到1407.9 W/(m·K);对于热管换热器,当热风入口温度为453~493 K、热风流量为0.6~1.8 m^(3)/h、冷风流量为0.6~1.5 m^(3)/h时,提高热风入口温度和流量能有效提高传热性能;此外,通过对比发现,基于热管和泡沫铜强化的换热器,传热量可提升33.3%,效能可提升31.0%。
To improve the heat transfer performance of an organic liquid dehydrogenation reactor,a new type of heat exchanger suitable for organic liquid dehydrogenation was designed using heat pipe and copper foam-enhanced heat transfer technologies.With air as the heat transfer medium,the effects of inlet temperatures and flow rates on heat transfer,heat transfer coefficient,effectiveness,and exergy efficiency were analyzed experimentally.The enhancement effects of copper foam and heat pipe on heat transfer performance of the heat exchanger were compared.The results showed that the heat transfer performance of the heat pipe was effective at the dehydrogenation temperature of organic liquids,with an equivalent thermal conductivity reaching 1407.9 W/(m·K)at a working temperature of 473 K.For the heat pipe heat exchanger,when the inlet temperature of hot air was between 453 and 493 K,the flow rate of hot air was between 0.6 and 1.8 m^(3)/h,and the flow rate of cold air was between 0.6 and 1.5 m^(3)/h,the heat transfer performance could be effectively improved by increasing the inlet temperature and flow rate of hot air.In addition,comparative results showed that the heat transfer and effectiveness of heat exchangers enhanced with heat pipe and copper foam could be increased by 33.3%and 31.0%,respectively.
作者
赵鑫龙
陈鑫楠
崔可心
杨科文
李月豪
汪若凡
姚慧聪
王银峰
ZHAO Xinlong;CHEN Xinnan;CUI Kexin;YANG Kewen;LI Yuehao;WANG Ruofan;YAO Huicong;WANG Yinfeng(College of Energy Science and Engineering,Nanjing Tech University,Nanjing 211800,China;Nanjing Lianneng Environmental Technology Co.,Ltd.,Nanjing 210009,China)
出处
《南京工业大学学报（自然科学版）》
CAS
北大核心
2024年第5期576-583,共8页
Journal of Nanjing Tech University(Natural Science Edition)
基金
国家自然科学基金青年基金(51806100)。
关键词
热管
泡沫铜
换热器
效能
有机液体脱氢
heat pipe
copper foam
heat exchanger
effectiveness
organic liquid dehydrogenation
