摘要
以两种不同构造的钢筋混凝土试块为研究对象,在恒温环境舱空气温度分别保持36℃和31℃两种工况下进行蓄热实验,得到了72h内两个试块内部各测点的逐时温度场。结果显示,试块与空气的传热过程可近似为一维传热;相同工况下换热面上安装钢制肋片的试块与无肋片试块相比,蓄热容量比提高8%左右;试块与空气的换热温差越大,肋片对增大试块72h内蓄热量的作用越强。
Focusing on two reinforced concrete specimens with different structures,performs thermal storage experiments in the two conditions that the temperature of the constant temperature environmental chamber remains at 36 ℃ and 31 ℃ respectively,and obtains the hourly temperature field of each measuring point inside the two specimens in 72 hours.The results indicate that the heat transfer between specimens and the surrounding air can be treated approximately as a one-dimensional process;in the same condition,the heat storage capacity ratio of the steel-finned specimen on the heat transfer surface is larger by eight percent than that of the unfinned specimen;the larger the heat transfer temperature difference between specimens and the surrounding air is,the better the improving effect of the fins on thermal storage of the specimen in 72 hours is.
出处
《暖通空调》
北大核心
2012年第6期114-118,共5页
Heating Ventilating & Air Conditioning
关键词
钢筋混凝土
试块
肋片
蓄热量
逐时温度
reinforced concrete
specimen
fin
thermal storage
hourly temperature
