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OALib Journal期刊
ISSN: 2333-9721
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不同扩展换热面传热、积灰、磨损特性对比
, PP. 33-38
Keywords: 低温换热器,优化选型,螺旋肋片管,h型鳍片管,传热,阻力,积灰,磨损
Abstract:
为了对低温换热器优化选型，利用热力计算和数值模拟的方法，对比分析了螺旋肋片管和h型鳍片管的传热、积灰、磨损特性。结果表明：常规结构参数下，单位长度的螺旋肋片管具有更大的换热效率，在达到相同换热量时，其钢材消耗是h型鳍片管的42.87%，烟气阻力是h型鳍片管的61.45%；h型鳍片管由于其特殊的沟槽结构，形成的涡流方向与主流速度相反，垂直冲刷基管背风面，达到自清灰的目的，其鳍片无侧向气流冲刷，整体磨损较轻。因此，螺旋肋片管的换热性能更好，但h型鳍片管的防积灰和耐磨性均优于螺旋肋片管。
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