CHEN Yin-biao1, SHI Ying1, XUE Hai-jun2, et al. TEST STUDY ON INFLUENCE OF ATMOSPHERIC CORROSION UPON PERFORMANCE OF DIRECT AIR COOLED SINGLE-ROW TUBE[J]. Thermal power generation, 2009, 38(10): 55-57.
CHEN Yin-biao1, SHI Ying1, XUE Hai-jun2, et al. TEST STUDY ON INFLUENCE OF ATMOSPHERIC CORROSION UPON PERFORMANCE OF DIRECT AIR COOLED SINGLE-ROW TUBE[J]. Thermal power generation, 2009, 38(10): 55-57.DOI:
大气腐蚀对直接空冷单排管性能影响的试验研究
摘要
通过进行单排管铝翅片(A3003)的实验室模拟酸雨地区大气腐蚀加速试验
研究了腐蚀前后单排管束的空气侧阻力和热工性能的差异。结果表明
大气腐蚀12.8年的管束翅片表面出现密集点蚀
使得表面粗糙而引起空气侧阻力增大
管束换热系数降低
换热能力有一定程度的下降。
Abstract
Through simulating atmospheric corrosion accelerating test in laboratory for single-row tube's aluminium fines(A303) in acid rain area
the difference of air side resistance and thermodynamic property of single-row tube bundle before and after corosion has been studied.Results show that the concentrated pitting corrosion has appeared on the surface of fines on the tube bundle
making the surface to be rough
resulting in increase of the air side resistance
at the same time
the heat exchange coefficient being decreased
and the heat exchange ability having been lowered in a certain extent.