透水地面热平衡的计算模型及实证研究  

Calculation Model and Empirical Investigation of Thermal Balance of Pervious Ground

作　　者：罗建河 廖小琴 石刚 谢宇琛 LUO Jianhe;LIAO Xiaoqin;SHI Gang;XIE Yuchen(School of Architecture∥Architecture Design Research Institute∥State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510640,Guangdong,China;China Machinery International Engineering Design&Research Institute Co.,Ltd.,Changsha 410007,Hunan,China)

机构地区：[1]华南理工大学建筑学院∥建筑设计研究院∥亚热带建筑科学国家重点实验室,广东广州510640 [2]中机国际工程设计研究院有限责任公司,湖南长沙410000

出　　处：《华南理工大学学报（自然科学版）》2019年第11期95-103,共9页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51678244)。

摘　　要：透水地面温度受到太阳辐射、表面对流换热、蒸发散热等多种因素影响,较难确定.文中在热量与湿度控制方程的基础上对透水地面与周边环境的换热过程进行了数值解析,推导出透水地面不同深度下的逐时温度计算模型,在此基础上编制计算程序计算透水地面温度,并与实测透水地面温度进行对比,发现数值计算值与实测值基本一致,最大相对误差在3.5%以内,说明推导得到的数值计算方法可作为预测透水地面温度的有效方法.文中还以此为基础引出等效太阳辐射吸收系数概念,该系数可直接用于评价不同含水率透水地面的太阳得热量.Pervious ground temperature is difficult to estimate because it can be affected by many factors,such as solar radiation,surface convection heat transfer,evaporation and heat dissipation.Based on the heat and humidity control equation,the heat transfer process between the permeable surface and the surrounding environment was numerically analyzed,and the hourly temperature calculation model at different depths of the permeable surface was deduced.Then the calculation program was compiled to calculate the permeable surface temperature.The calcula-ted temperature was compared with the measured surface temperature.The results show that the numerical calculation value is basically in accordance with the measured value,and the maximum relative error is less than 3.5%.the study shows that the derived numerical method can be used as an effective method to predict the permeable surface temperature.Based on this,the equivalent solar radiation absorption coefficient concept is proposed,which can be directly used to evaluate the solar heat gain of permeable surface with different water content.

关 键 词：透水地面 动态热平衡模型 等效太阳辐射吸收系数 

分 类 号：TU201.5[建筑科学—建筑设计及理论]