双层围护结构热特性的计算研究  

Computational Investigation of the Characteristics of Heat Transfer for A Double-enveloped Structures

作　　者：丁良士[1] 刘赓[1] 

机构地区：[1]北京工业大学热能工程学系

出　　处：《北京工业大学学报》1989年第4期53-62,共10页Journal of Beijing University of Technology

摘　　要：对一侧为双层透光玻璃,另侧为蓄热墙,中间为开口的自然对流空气层所组成的双围护结构,在日照作用下的稳态传热现象进行了计算研究,并以墙高3m,空气层为最佳厚度为基础,计算出其倾角为10°—90°时,在对流、导热、辐射3种传热的耦合作用下的两维无因次速度场、温度场和热特性曲线。计算表明,法向日照强度不变时,倾角在50°—90°范围内,通过围护结构的有效热量变化不大:当法向日照强度随倾角变化且有峰值时,有效放热量亦呈相应的峰值型变化。An analysis has been performed based on reference (9) to determine the characteristics of heat transfer numerically for a double-enveloped structure consisting of double-glass and mass wall with opened edges and different declination angles of the wall.The decritiza-tion method of Spalding-Patankar's was adopted for solving the equations of mass,momentum,and energy.The heat transfer results were obtained for the declination angles of the wall from 10 to 90 degrees.The results were compared with the data of experiments.

关 键 词：双层围护结构 热特性 数值计算 

分 类 号：TU352.59[建筑科学—结构工程]