A hybrid strategy combining minimized leading-edge electric-heating and superhydro-/ice-phobic surface coating for wind turbine icing mitigation
A hybrid strategy combining minimized leading-edge electric-heating and superhydro-/ice-phobic surface coating for wind turbine icing mitigation
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DOI：
10.1016/j.renene.2019.03.112
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发表时间：
2019-09-01
期刊：
影响因子：
8.7
通讯作者：
Hu, Hui
中科院分区：
文献类型：
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作者：
Gao, Linyue;Liu, Yang;Hu, Hui
为减缓风力涡轮机结冰，探索了一种混合防冰策略，该策略将叶片前缘的电加热最小化和覆盖叶片表面的超疏水/疏冰涂层相结合。实验研究在爱荷华州州立大学（ISU-IRT）的结冰研究隧道中进行，其中涡轮机叶片模型在暴露于不同结冰条件下的模型横截面中具有DU 91-W2-250翼型。虽然超疏水/疏冰表面涂层用于覆盖整个叶片表面，但一条电热膜用于缠绕叶片模型的前缘。通过使用超疏水/疏冰涂层来覆盖整个叶片表面，其中电加热元件仅覆盖叶片前表面的5%-10%的混合策略将能够在霜和釉结冰条件下保持整个叶片表面无冰。与粗暴地加热整个亲水叶片表面以保持叶片无冰的常规策略相比，发现混合策略能够以显著更少的功耗实现相同的防冰/除冰性能（即，在所需的功率消耗上节省高达90%），使其成为用于减轻风力涡轮机结冰的非常有前景的策略。(C)2019爱思唯尔有限公司版权所有。
A hybrid anti-icing strategy that combines minimized electro-heating at the blade leading edge and a superhydro-/ice-phobic coating to cover the blade surface was explored for wind turbine icing mitigation. The experimental study was conducted in an Icing Research Tunnel available at Iowa State University (ISU-IRT) with a turbine blade model with DU91-W2-250 airfoil in the model cross-section exposed under different icing conditions. While a superhydro-/ice-phobic surface coating was used to cover the entire blade surface, a strip of electric heating film was used to wrap around the leading edge of the blade model. By using the superhydro-/ice-phobic coating to cover the entire blade surface, the hybrid strategy with the electric heating element covering only 5%-10% of the blade front surface would be able to keep the entire blade surface ice free under both rime and glaze icing conditions. In comparison to the conventional strategy to brutally heating the entire hydrophilic blade surface to keep the blade ice free, the hybrid strategy was found to be able to achieve the same anti-/de-icing performance with substantially less power consumption (i.e., up to-90% saving in the required power consumption), making it a very promising strategy for wind turbine icing mitigation. (C) 2019 Elsevier Ltd. All rights reserved.