基于汽热法风力机叶片除冰传热分析

基于气热法对风力机叶片除冰的传热计算进行分析,主要为给定空气加热器输出热量后,对除冰时间的传热分析进行计算。首先介绍了风力机叶片结冰的机理和气热法除冰的原理,然后进行传热过程中的对流换热以及导热的理论计算,从而得到了各个传热过程中的传热量,并且估算出最佳除冰温度下空气加热器的最小输出热量,最后通过仿真实例计算出理论上达到除冰要求时所需要的时间。对叶片进行传热分析可以评估除冰系统运行时的效率,提高除冰系统的经济性,同时也为工程传热计算提供依据。

HEAT TRANSFER ANALYSIS OF THE DE-ICING SYSTEM FOR WIND TURBINE BLADES BASED ON GAS THERMAL

Based on the gas thermal method,heat transfer calculation of the de-icing system for wind turbine blades is analyzed in this paper.First,the formation mechanism of blade icing is introduced.At same time,the principle of gas thermal de-icing system is presented.Second,the convective heat transfer and thermal conductivity are calculated.Then,the heat transfer in the heat transfer process and the minimum heat output of air heaters under optimal de-icing temperature are obtained.Finally,the time required for de-icing effect was obtained by a simulation example.