高大空间空气载能辐射末端热环境与传能研究

发布时间：2018-08-27 10:01

【摘要】：本文以内设空气载能辐射空调系统的某火车站候车厅为研究对象,利用FLUENT数值模拟的方法,分析研究了房间人体活动区域内空气工况参数和系统传能过程。模拟结果显示,该房间室内空气温湿度分布较均匀,未出现结露现象。且在传能过程中,系统总冷负荷约为119 KW,空气载能辐射空调系统承担92%的冷负荷;其中,辐射换热占房间总负荷64.2%,对流换热占29.1%,由此可得系统以辐射换热为主;相较于金属平板辐射空调系统,该系统新增的对流换热量包括载能空气与辐射孔板间的对流换热量以及循环流动的交换能量;经计算,在相同模拟条件下,该系统总换热量较金属平板辐射空调系统超出约10%以上。综上,该系统在理论上基本符合高大空间建筑夏季负荷大,强调舒适节能的要求。
[Abstract]:In this paper, taking the waiting room of a railway station with an air-borne radiation air conditioning system as the research object, using the method of FLUENT numerical simulation, the parameters of air working conditions and the energy transfer process of the system in the moving area of the human body in the room are analyzed and studied. The simulation results show that the indoor air temperature and humidity distribution in this room is uniform and no condensation occurs. In the process of energy transfer, the total cooling load of the system is about 92% of the total cooling load of the air energy carrying radiation air-conditioning system of 119 KW, among which, the radiation heat transfer takes up 64.2% of the total load of the room, and the convection heat transfer takes up 29.1, so it can be concluded that the main system is radiation heat transfer. Compared with the metal plate radiative air conditioning system, the new convection heat transfer in the system includes the convection heat transfer between the carrier air and the radiation hole plate and the energy exchange of the circulating flow. The total heat transfer of the system is more than 10% higher than that of the metal plate radiating air conditioning system. In conclusion, the system basically accords with the heavy summer load of large space buildings in theory and emphasizes the requirement of comfort and energy saving.
【作者单位】：湖南大学;
【基金】：国家自然科学基金项目“空气载能辐射空调优化与控制机理研究”(51378186) 国家国际科技合作项目“中南地区可再生能源与绿色建筑关键技术合作研究”(2010DFB63830) 国家科技支撑计划——韶山红色旅游区绿色宜居环境构建及智慧管理(No.2015BAJ03B00)
【分类号】：TU831

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