Comparative Study on the Infrared Radiance Field of Building Surface under Sunshine Conditions and Rainfall Conditions  

作　　者：Ming Xie Hai-Qiang Wang Xiao-Chen Xie Xiao-Chun Wang He-Ping Tan 

机构地区：[1]School of Energy Science and Engineering,Harbin Institute of Technology [2]Liaoning Qiangfeng Aluminum Industry Engineering Co.,Ltd [3]Research Institute of Intelligent Control and Systems,Harbin Institute of Technology

出　　处：《Journal of Harbin Institute of Technology(New Series)》2013年第4期7-13,共7页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National Natural Science Foundation of China(Grant No.51276050)

摘　　要：The Monte Carlo method and the region method are combined in this paper,where a high-rise building in Harbin were taken for example to investigate the infrared radiation field of building surface.The calculation models of temperature field and radiation transfer coefficient on the exterior surface were established.Through the self-built Bidirectional Reflectance Distribution Function(BRDF)experimental device,the BRDFs of moorstone,aluminum plate,coated glass and Ethylene-Propylene-Diene Monomer(EPDM)on the surfaces under dry and wet conditions were measured at different incidence angles with respective laser wavelengths of0.6328μm and 1.34μm.For the two wavelengths,the reflection ratios of the material surfaces under dry and wet conditions were calculated respectively.Based on some proper simplifications of the background condition,the simulation analysis of the radiation field of building surface was carried out according to the wetness theory and the measured data.Taking the situation at 9:00 a.m.on the day of summer solstice as an example,this paper made relevant quantitative calculation for the solar radiation,the self radiation of the surface units,the radiating projection between the surface units,and the general infrared radiation of the building surface.Comparisons on infrared radiance field of the building surface were obtained under cloud-free sunshine conditions and rainfall conditions respectively,and the rationality of the results was discussed.The Monte Carlo method and the region method are combined in this paper, where a high-rise building in Harbin were taken for example to investigate the infrared radiation field of building surface. The calculation models of temperature field and radiation transfer coefficient on the exterior surface were established. Through the seff-built Bidirectional Reflectance Distribution Function （BRDF） experimental device, the BRDFs of moorstone, aluminum plate, coated glass and Ethylene-Propylene-Diene Monomer （EPDM） on the surfaces under dry and wet conditions were measured at different incidence angles with respective laser wavelengths of 0. 6328 I^m and 1.34 Ixm. For the two wavelengths, the reflection ratios of the material surfaces under dry and wet conditions were calculated respectively. Based on some proper simplifications of the background condition, the simulation analysis of the radiation field of building surface was carried out according to the wetness theory and the measured data. Taking the situation at 9：00 a.m. on the day of summer solstice as an example, this paper made relevant quantitative calculation for the solar radiation, the self radiation of the surface units, the radiating projection between the surface units, and the general infrared radiation of the building surface. Comparisons on infrared radiance field of the building surface were obtained under cloud-free sunshine conditions and rainfall conditions respectively, and the rationality of the results was discussed.

关 键 词：building surface BRDF radiation reflection ratio 

分 类 号：TK124[动力工程及工程热物理—工程热物理]