烟气冷凝热能回收利用装置烟气流动方式优化研究  

Optimal and Simulation for Diversion Section of Flue Gas Condensation Heat Recycling Device

作　　者：葛海霞[1] 王随林[1] 穆连波[1] 罗雪莹[1] 严欢[1] 

机构地区：[1]北京建筑工程学院环境与能源工程学院,北京100044

出　　处：《北京建筑工程学院学报》2010年第4期16-19,24,共5页Journal of Beijing Institute of Civil Engineering and Architecture

基　　金：北京市自然基金重点(B)项目(3052006);北京市教育委员会科技计划重点项目(KZ200810016006);北京市教育委员会科技成果转化--中小燃气锅炉防腐紧凑型烟气冷凝热能回收器研发(2009)

摘　　要：烟气冷凝热能回收利用装置中烟气的分布与流动对换热起着重要作用,为优化烟气冷凝热能回收利用装置,保证烟气能够在装置中分布均匀、充分换热,分别设计两种烟气流动方式,采用CFD软件Fluent模拟了烟气冷凝热能回收利用装置中的流场及温度场,并将其分别应用于实际工程进行现场实测.结果表明,采用渐变断面设计的烟气流动方式,烟气在换热面上分布更均匀,更有利于强化换热,阻力更小,节能率比采用等高断面最大可提高3.25%,可有效降低和消除噪音.In order to optimize flue gas condensation heat recycling equipment for the gas equipment,two methods for gas flow were designed;It used CFD software Fluent to simulate the flow field and temperature field of the flue gas condensing heat recycling device.Compared with the measured results of the engineering application,it shows that the method designed by Gradual changed section makes the flue gas more uniform distribution on heat exchanger surface,enhances heat transfer,reduces the resistance,and saves material and space.The engineering applications show that this method can reduce and eliminate the noise effectively.The study provides a reference for research and development of flue gas condensing heat recycling device.

关 键 词：烟气 流动方式 优化 数值模拟 实测 

分 类 号：TU833.3[建筑科学—供热、供燃气、通风及空调工程]