摘要
为研究周期性边界下围岩热湿耦合传递特性,以相对湿度和温度为驱动势,建立了围岩热湿耦合传递数学模型,并设计正交试验,探究围岩热湿耦合传递特性的影响因素,得到了围岩年平均热湿吸放量及时长的预测公式。研究结果表明:围岩温湿度呈现季节性变化,围岩内部温湿度幅值存在延迟和衰减,越远离壁面其温湿度幅值越小,峰值温度越低且峰值出现的时间越晚;围岩调温圈厚度逐月增加,从1月厚度为5m到12月扩展至11m;年温度波幅对围岩吸放热量影响最大,年平均温度对吸放热时长影响最大,年湿度波幅对围岩放湿量影响最大,年平均湿度对围岩吸湿量及吸放湿时长影响最大。
To study the coupled heat and moisture transfer characteristics of surrounding rock under periodic boundary condition,a mathematical model described the coupled heat and moisture transfer was developed with temperature and relative humidity as the driving potentials.By designing orthogonal experiments,the impact factors of the coupled heat and moisture transfer characteristics were explored,and a prediction formula for the annual average heat and moisture absorption and release and their duration was obtained.The results showed that the temperature and humidity of the surrounding rock show seasonal changes,and the amplitude of temperature and humidity inside the surrounding rock were delayed and attenuated.The surrounding rock control heat circle expanded month by month,and the thickness of the control heat circle expanded from 5m in January to 11m in December.The annual amplitude and annual average of air temperature had the greatest impact on the heat absorption and release of surrounding rock and the duration of heat absorption and release,respectively.The annual fluctuation amplitude of air humidity had the greatest impact on the moisture release of surrounding rock,and the annual average humidity had the greatest impact on the moisture absorption and release duration of surrounding rock.
作者
张倩
曹晓玲
周旭
冷子瑜
Zhang Qian;Cao Xiaoling;Zhou Xu;Leng Ziyu(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu,610031)
出处
《制冷与空调（四川）》
2024年第1期22-31,共10页
Refrigeration and Air Conditioning
基金
四川省科技计划项目(2021YFG0120)
中央高校基本科研项目(2682022CG007)。
关键词
围岩热湿耦合传递
周期性边界
正交试验
热湿吸放量
coupled heat and moisture transfer
periodic boundary
orthogonal experiment
heat and moisture absorption and release
