高温热源建筑室内不对称辐射热环境特性与隔热机理研究

Radiant heat with high intensity and fixed direction exists in a building with high temperature heat source, and resulting in asymmetrical thermal radiant filed. There was a lack of rational evaluation method for the indoor hot environment and design method for the heat insulation, which may be not benefit for the workers heath and productivity. In order to solve this problem, the building with high temperature heat source was selected as the research objective in this project, and the experimental study integrated with numerical simulation and subjective evaluation were used as the research method. Firstly, the quantitative analysis of effect of heat source surface temperature on the characteristic of non-uniform distribution of indoor hot environment was performed, and then the change law of indoor mean radiant temperature and radiant temperature asymmetry was obtained. Secondly, the effect of heat source surface temperature on human psychological and physiological response was studied, and then the tolerant ranges of indoor mean radiant temperature and radiant temperature asymmetry were obtained. Finally, the interrelation between the radiant transfer and the convective transfer of heat insulation device was analyzed, and then the relationship between the performance parameters of heat insulation device and indoor mean radiant temperature and radiant temperature asymmetry was established. The research results of this project will fill in gap related to asymmetrical thermal radiant filed in the evaluation standard of indoor hot environment, and can be the theoretical foundation for the rational design of heat insulation device, which can be benefit for the workers heath and productivity.

高温热源建筑室内存在高强度的定向辐射热，导致室内热辐射场呈显著地不对称分布。至今缺乏合理的高温不对称辐射热环境评价方法及相关隔热设计方法，严重影响了劳动人员健康安全及生产效率。针对上述问题，本项目以高温热源建筑为研究对象，拟采用实验研究、数值模拟及问卷调查相结合的方法，系统分析热源表面温度变化对室内热环境参数非均匀分布特性的影响，揭示室内平均辐射温度及不对称辐射温度的变化规律；研究不同热源表面温度条件下室内人体心理及生理反应特性，明确人体可耐受的室内平均辐射温度及不对称辐射温度变化范围；阐明隔热装置表面辐射对流耦合作用机理，建立隔热装置特性参数与室内平均辐射温度及不对称辐射温度之间的定量关系。本项目的研究成果将填补热环境评价标准中有关高温不对称辐射方面的空白，为高温热源建筑室内隔热装置的合理设计提供理论依据，从而对提高劳动人员健康水平及生产效率具有重要意义。

高温热源建筑室内存在高强度的定向辐射热，导致室内热辐射场呈显著地不对称分布。至今缺乏合理的高温不对称辐射热环境评价方法及相关隔热设计方法，严重影响了劳动人员健康安全及生产效率。针对上述问题，本项目通过实验研究系统分析了高温热源表面温度变化对室内辐射热环境特性的影响，发现了不对称辐射温度与平均辐射温度分别呈线性和非线性变化特征；通过主观问卷调查研究了高温热源表面温度变化对室内人员热感受的影响，提出了评价不对称高温辐射热环境的新指标；建立了高温热源建筑室内平均辐射温度和WBGT简化计算方法，发现了隔热装置表面发射率对室内辐射热环境的影响规律。本项目的研究成果为高温建筑室内隔热装置的合理设计提供理论依据，对提高劳动人员健康水平及生产效率具有重要意义。