基于CFD的两种特朗勃墙的热性能分析  

Thermal performance of two kinds of Trombe walls based on CFD

作　　者：颜一鸣 YAN Yiming(School of Thermal Engineering,Shandong Jianzhu University,Jinan 250101,China)

机构地区：[1]山东建筑大学热能工程学院,山东济南250101

出　　处：《区域供热》2023年第3期149-154,共6页District Heating

摘　　要：为了进一步提高双风道特朗勃墙的性能,设计了波纹双风道特朗勃墙,并通过CFD软件建立了波纹双风道特朗勃墙和普通双风道特朗勃墙的数学模型。结果表明:在空气流量36~126 m^(3)/h的范围内,波纹双风道太阳墙的集热效率比普通双风道特朗勃墙高1.83%~2.65%,且随着空气流量的增加,波纹双风道特朗勃墙比普通折流板双风道特朗勃墙的效率提升更加明显。波纹板能有效提高空气与集热板的对流传热能力,在空气流量36~126 m^(3)/h的范围内,对流传热系数的提升效果从5.29%减小到1.77%。波纹风道结构能显著提升双风道特朗勃墙的㶲效率,在空气流量36~126 m^(3)/h的范围内,波纹双风道太阳墙的集热效率比普通双风道特朗勃墙高3.50%~5.26%。In order to further improve the performance of the Trombe walls with double channels,the Trombe walls with double corrugated channels is proposed and their mathematical models are established by using CFD software.The results show that in the range of air volume of 36~126 m^(3)/h,the collection efficiency of the Trombe walls with double corrugated channels is 1.83%~2.65%higher than that of the Trombe walls with double channels.Moreover,with the increase of air volume,the collection efficiency of Trombe walls with double corrugated channels is more significantly improved than that of Trombe walls with double channels.The corrugated absorber plate could effectively improve the convective heat transfer coefficient between air and absorber plate.In the range of air volume of 36~126 m^(3)/h,the improvement effect of the convective heat transfer coefficient decreases from 5.29%to 1.77%.In the range of air flow rate of 36~126 m^(3)/h,the collection efficiency of the Trombe walls with double corrugated channels was 3.50%~5.26%higher than that of the Trombe walls with double channels.

关 键 词：特朗勃墙 集热效率 㶲效率 热损系数 

分 类 号：TU111.4[建筑科学—建筑理论]