摘要
基于火积理论分析得出了高炉冷却壁的火积平衡方程式以及冷却壁中的火积耗散.在此基础上定义了高炉冷却壁的热阻.根据最小热阻原理,提出用高炉冷却壁的热阻来评价其传热性能的优劣的观点,通过实例说明了高炉冷却壁热阻的计算方法,比较了不同冷却水管间距下冷却壁热面最高温度及热阻之间的关系.结果表明,随着冷却水管间距的改变,冷却壁热阻与热面最高温度有相同的变化趋势.在一定的边界条件下,高炉冷却壁的热阻可以评价其传热性能的优劣.
Based on entransy theory, the entransy balance equation and the entransy dissipation of blast furnace stave are obtained. On this basis, the thermal resistance of blast furnace stave is defined. According to the principle of minimum thermal resistance, thermal resistance is proposed to evaluate the heat transfer performance of blast furnace stave. The calculation method of the thermal resistance of blast furnace stave is illustrated with a practical problem. The relationship of maximum temperature of the stave hot face and thermal resistance with different cooling pipe space is compared. The results show that with the change of cooling pipe space, maximum temperature of the stave hot face and thermal resistance have the same trend. Under the certain boundary conditions, the heat transfer performance of blast furnace stave can be evaluated by the thermal resistance.
出处
《同济大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2015年第12期1873-1876,共4页
Journal of Tongji University:Natural Science
基金
国家自然科学基金(51574179)
江苏省高校自然科学研究面上项目(15KJB450002)
关键词
火积理论
高炉冷却壁
热阻
性能评价
entransy theory
blast furnace stave
thermalresistance
performance evaluation