摘要
利用数值计算方法对建筑物南墙在太阳辐射作用下的传热过程进行模拟计算,分析了室外温度和不同保温形式时,连续日照天数对南墙传热过程和太阳能吸收效果的影响。研究结果表明:连续晴朗天数较长时,内、外保温南墙太阳辐射净得热量近似相等;但连续晴朗天数较短时,内保温南墙太阳辐射净得热量比外保温情况高30%~80%。室外气温越低,连续晴天数越短,内保温方式的节能优势越明显。
The heat transfer process of the south walls of the building under the solar radiation was simulated by numerical method,and the influence of the number of consecutive-sunny-days on the heat transfer process and the solar energy absorption effect of the south walls were analyzed when the outdoor air temperature and insulation methods varied. The results showed that the net heat gaining from solar radiation of the interior and exterior thermal insulations on the south walls was approximately equivalent when the consecutive-sunny-days were long,but when the consecutive-sunny-days were short,the net heat gaining from solar radiation of the interior insulation on the south walls was 30% ~ 80% higher than that of the exterior insulation. And the lower the outdoor air temperature was,and the shorter the consecutive-sunny-days were,the more significant the energy saving advantage of the interior insulation method would be.
出处
《建筑科学》
CSCD
北大核心
2017年第2期77-82,共6页
Building Science
基金
国家自然科学基金资助项目"长江下游地区居住建筑保温方式适用性研究"(51478098)
上海市教委科研创新重点资助项目(13ZZ054)
关键词
连续晴天数
室外气温
保温方式
太阳辐射净得热量
南墙太阳能每日实际吸收率
consecutive-sunny-days
outdoor air temperature
insulation methods
net heat gaining from solar radiation
daily practical absorption rate of solar radiation on the south walls
