摘要
为了强化船用板式换热器换热,对曲折形波纹板式换热器进行优化设计。采用数值模拟的方法,研究了曲折形波纹板不同波纹倾角、波纹高度下的流动换热特性。研究结果表明:曲折形波纹板内部流体的Nu数和阻力特性随着波纹倾角β的增大而增加,随着波纹高度a的增加而减小。通过优化得到的波纹板波纹角度为β=40°,纵向波高比a为0.4,与原曲折波纹板相比,同一流速下,新板片的换热性能提高了15.4%,阻力系数升高了16.2%,综合性能参数与原板片相比提高了22.3%。研究结果对船用换热设备的设计及优化奠定了理论基础。
In order to strengthen heat transfer in marine heat exchanger, it is necessary to optimize the de- sign of the zigzag corrugated plate heat exchanger. A fluid numerical simulation of the zigzag corrugated heat exchange plates on the flow and heat transfer characteristics with different corrugated angles and heights is presented. The flow and heat transfer attributes of corrugated plate heat exchanger is analyzed and optimized. NuNumber and pressure loss are increasing with the corrugation angle/3 and decreasing with the longitudinal wave height ratio a. The results of an optimal plate＇ s parameters include the corruga- tion angle/3 of40~and the longitudinal wave height ratio of 0.4. Comparing with the original winding cor- rugated plate, the performance of plates increases by 15, 4%, the resistance coefficient rises 16.2% and comprehensive performance parameter is 22.3% higher than the original plate. The study laid the foun- dation for design and optimization of marine heat exchange eauioment.
出处
《节能技术》
CAS
2015年第1期25-29,共5页
Energy Conservation Technology
基金
江苏省产学研联合创新资金(BY2013003-07)
南通市重大科技创新专项(XA2012003)
关键词
高低板换热器
数值模拟
综合性能参数
波纹倾角
波纹高度
corrugated plate heat exchangers
numerical simulation
corrugated inclination
corrugationheight
