【摘要】：運(yùn)用模型實(shí)驗(yàn)相似理論,推導(dǎo)出高溫礦井巷道風(fēng)流對(duì)流換熱原型和模型之間的相似判據(jù),建立了高溫礦井巷道風(fēng)流對(duì)流換熱的實(shí)驗(yàn)系統(tǒng)。測(cè)量并分析了不同巷道壁溫、不同入口風(fēng)速以及入口溫度對(duì)對(duì)流換熱系數(shù)的影響;利用相關(guān)分析的方法,分析了巷道壁溫、入口風(fēng)速和巷道平均風(fēng)流溫度對(duì)對(duì)流換熱系數(shù)的影響程度,得到各因素對(duì)對(duì)流換熱系數(shù)影響程度,按從大到小的順序?yàn)橄锏榔骄L(fēng)流溫度、入口風(fēng)速及巷道壁溫;其中,巷道平均風(fēng)流溫度和入口風(fēng)速均與對(duì)流換熱系數(shù)呈正相關(guān),而巷道壁溫與對(duì)流換熱系數(shù)呈負(fù)相關(guān)。基于對(duì)各影響因素的分析,得到了高溫礦井巷道風(fēng)流對(duì)流換熱實(shí)驗(yàn)關(guān)聯(lián)式,該關(guān)聯(lián)式可以在實(shí)驗(yàn)范圍內(nèi)計(jì)算實(shí)際礦井風(fēng)流的對(duì)流換熱系數(shù)。
[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.
【作者單位】： 西安科技大學(xué)能源學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(編號(hào):51404191,51504188)
【分類號(hào)】：TD727.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 杜翠鳳;徐U，

本文編號(hào)：2221128