冷辐射板布置方式对办公室热环境影响的模拟研究

• 作 者: 杨雨佳 刘金祥 牛晓峰 张恺
• 机 构: 南京工业大学,
• 出 处: 流体机械
• 发表日期: 2017年01期
• 关键词: 辐射供冷 置换通风 温度分布 数值模拟

辐射供冷常与置换通风系统结合使用以达到良好的舒适性和节能性。辐射供冷/置换通风系统用于办公环境时,冷辐射板的布置方式会对室内热环境产生影响。本文采用CFD方法,通过Airpak对冷辐射板分别置于办公室内顶棚、地板、侧墙上部和侧墙下部四种情况的换热过程进行模拟分析,得出了冷辐射板不同布置方式对应的室内温度场和流场。结果表明,在本文研究的4种布置方式中,垂直墙壁上侧布置的供冷效果最佳,其湍流浑浊区范围最小、热力分层高度最高,同时得到了最低的活动区域温度。

Radiant cooling is often used in conjunction with displacement ventilation systems to achieve good comfort and energy savings. Radiant Cooling / Displacement Ventilation Systems When used in office environments, the arrangement of cold radiant panels can have an effect on the indoor thermal environment. In this paper, the CFD method is used to simulate and analyze the heat transfer process of the cold radiant panels in the ceiling, floor, upper part of the side wall and the lower part of the side wall by Airpak respectively. Temperature field and flow field. The results show that the cooling effect on the upper side of the vertical wall is the best among the four layouts studied in this paper. The turbulence turbidity zone has the smallest range, the highest thermal stratification height and the lowest active zone temperature.