多孔竖板辐射供暖室内温度分布数值模拟研究  

Numerical Simulation of Temperature Distribution in a Radiant Heating Room with Porous Heating Vertical Panel

作　　者：刘园 王登甲[1] LIU Yuan;WANG Deng-jia(School of Building Services Science and Engineering,Xi’an University of Architecture and Technology)

机构地区：[1]西安建筑科技大学建筑设备科学与工程学院

出　　处：《建筑热能通风空调》2021年第5期35-38,共4页Building Energy & Environment

摘　　要：针对提出的新型多孔辐射竖板结构,通过CFD软件对不同结构及运行参数下辐射竖板换热进行模拟,并与实验测试结果对比,验证数值计算模型的正确性。结果表明:竖板表面温度、热流密度受供水温度影响明显,供水温度升高10℃,竖板表面温度升高3℃左右,热流密度增加13 W/m^(2)。室内空气温度水平方向分布均匀,垂直方向室内空气温度在垂直方向上呈现出线性增长趋势,人体脚踝处0.1 m时空气温度约为18.9℃,头部1.7 m时空气温度约为21.0℃。室内空气流速较大的区域处于房间的上部,高度约为2 m,风速约为0.25 m/s,其次是房间的底部,人体脚踝处位置,在人体主要活动区域0.6~1.7 m之间,空气流速低于0.1 m/s。Based on the proposed new porous radiant vertical panel structure,the CFD software was used to simulate the heat transfer of the radiant vertical panel under different structures and operating parameters and compared with the experimental test results to verify the correctness of the numerical calculation model.The results show that the surface temperature and heat flow density of the panel are significantly affected by the supply water temperature.The supply water temperature increases by 10℃,the temperature of the panel surface increases by about 3℃,and the heat flow density increases by 13 W/m^(2).The indoor air temperature is evenly distributed in the horizontal direction,and the indoor air temperature in the vertical direction shows a linear growth trend in the vertical direction.The air temperature at the ankle of the human body is about 18.9℃at 0.1m,and the air temperature at the head of 1.7m is about 21.0℃.The area with a large indoor air velocity is located in the upper part of the room,with a height of about 2m and a wind speed of about 0.25 m/s,followed by the bottom of the room,the position of the human ankle,between 0.6~1.6 m in the main human activity area,The flow velocity is lower than 0.1 m/s.

关 键 词：房间热环境 温度分布 实验研究 数值模拟 

分 类 号：TU832[建筑科学—供热、供燃气、通风及空调工程]