摘要
Experimental investigation of heat transfer and flow resistance performance on heat exchanger with lozenge fin tubes supported by helical baffles was carried out. Under the experimental conditions,curves of relation between heat transfer film coefficient and flow velocity,relation between flow resistance coefficient and velocity were obtained,which provides references for industrial application of this type of heat exchanger. Experimental results indicated that within the range of diesel oil flow velocity 0.22-0.85 m·s -1,heat transfer film coefficient in shell side of heat exchanger with lozenge fin tubes supported by helical baffles was 512-1378?W·m -2·K -1,which was 54%-108% higher than that of heat exchanger with smooth tubes supported by helical baffles,while flow resistance coefficient was lower by 5%-30%,which showed that heat exchanger with lozenge fin tubes supported by helical baffles had favorable heat transfer and flow resistance performance.
Experimental investigation of heat transfer and flow resistance performance on heat exchanger with lozenge fin tubes supported by helical baffles was carried out. Under the experimental conditions,curves of relation between heat transfer film coefficient and flow velocity,relation between flow resistance coefficient and velocity were obtained,which provides references for industrial application of this type of heat exchanger. Experimental results indicated that within the range of diesel oil flow velocity 0.22-0.85 m·s -1,heat transfer film coefficient in shell side of heat exchanger with lozenge fin tubes supported by helical baffles was 512-1378?W·m -2·K -1,which was 54%-108% higher than that of heat exchanger with smooth tubes supported by helical baffles,while flow resistance coefficient was lower by 5%-30%,which showed that heat exchanger with lozenge fin tubes supported by helical baffles had favorable heat transfer and flow resistance performance.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2003年第3期388-391,共4页
CIESC Journal
基金
广东省重点科技攻关项目 (C12 2 0 3)
教育部重点研究项目 ( 0 0 10 3) .~~
关键词
菱形翅片管换热器
螺旋折流板
传热
流阻
helical baffle,lozenge fin tube,heat exchanger,heat transfer,flow resistance
