高温矿井巷道风流对流换热相似实验研究
发布时间：2018-09-03 20:50
【摘要】：运用模型实验相似理论,推导出高温矿井巷道风流对流换热原型和模型之间的相似判据,建立了高温矿井巷道风流对流换热的实验系统。测量并分析了不同巷道壁温、不同入口风速以及入口温度对对流换热系数的影响;利用相关分析的方法,分析了巷道壁温、入口风速和巷道平均风流温度对对流换热系数的影响程度,得到各因素对对流换热系数影响程度,按从大到小的顺序为巷道平均风流温度、入口风速及巷道壁温;其中,巷道平均风流温度和入口风速均与对流换热系数呈正相关,而巷道壁温与对流换热系数呈负相关。基于对各影响因素的分析,得到了高温矿井巷道风流对流换热实验关联式,该关联式可以在实验范围内计算实际矿井风流的对流换热系数。
[Abstract]:By using the similarity theory of model experiment, the similarity criterion between the model and the prototype of air flow convection heat transfer in high temperature mine roadway is deduced, and the experimental system of air flow convection heat transfer in high temperature mine tunnel is established. The influence of different tunnel wall temperature, different inlet wind speed and inlet temperature on convection heat transfer coefficient is measured and analyzed. The influence of the inlet wind speed and the average air flow temperature on the convection heat transfer coefficient is obtained. The influence degree of each factor on the convection heat transfer coefficient is obtained. The order from large to small is the average air flow temperature, the inlet wind speed and the wall temperature of the tunnel. The average air flow temperature and inlet wind velocity are positively correlated with the convection heat transfer coefficient, while the wall temperature is negatively correlated with the convection heat transfer coefficient. Based on the analysis of various influencing factors, the experimental correlation formula of air flow convection heat transfer in high temperature mine roadway is obtained, which can calculate the convection heat transfer coefficient of actual mine air flow within the experimental range.
【作者单位】： 西安科技大学能源学院;
【基金】：国家自然科学基金项目(编号:51404191,51504188)
【分类号】：TD727.2
[Abstract]:By using the similarity theory of model experiment, the similarity criterion between the model and the prototype of air flow convection heat transfer in high temperature mine roadway is deduced, and the experimental system of air flow convection heat transfer in high temperature mine tunnel is established. The influence of different tunnel wall temperature, different inlet wind speed and inlet temperature on convection heat transfer coefficient is measured and analyzed. The influence of the inlet wind speed and the average air flow temperature on the convection heat transfer coefficient is obtained. The influence degree of each factor on the convection heat transfer coefficient is obtained. The order from large to small is the average air flow temperature, the inlet wind speed and the wall temperature of the tunnel. The average air flow temperature and inlet wind velocity are positively correlated with the convection heat transfer coefficient, while the wall temperature is negatively correlated with the convection heat transfer coefficient. Based on the analysis of various influencing factors, the experimental correlation formula of air flow convection heat transfer in high temperature mine roadway is obtained, which can calculate the convection heat transfer coefficient of actual mine air flow within the experimental range.
【作者单位】： 西安科技大学能源学院;
【基金】：国家自然科学基金项目(编号:51404191,51504188)
【分类号】：TD727.2
【参考文献】
相关期刊论文 前10条
1 杜翠凤;徐U，
本文编号：2221128
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