Development and experimental validation of a one-dimensional dynamic hygrothermal modeling based on

• 作 者: GUO Xing-guo CHEN You-ming DENG Yong-qiang
• 机 构: School of Civil Engineering and Architecture, Nanchang University, Nanchang 330031, China;College of
• 出 处: 中南大学学报（英文版）
• 发表日期: 2012年3期
• 关键词: transient hygrothermal modeling air humidity ratio modified modeling experimenta

A modified one-dimensional transient hygrothermal model for multilayer wall was proposed using air humidity ratio and temperature as the driving potentials.The solution for the goving equations was obtained numerically by implementing the finite-difference scheme.To evaluate the accuracy of the model,a test system was built up to measure relative humidity and temperature within a porous wall and compare with the prediction of the model.The prediction results have good agreement with the experimental results.For the interface close to indoor side,the maximum deviation of temperature between calculated and test data is 1.87 K,and the average deviation is 0.95 K; the maximum deviation of relative humidity is 11.4％,and the average deviation is 5.7％.For the interface close to outdoor side,the maximum deviation of temperature between prediction and measurement is 1.78 K,and the average deviation is 1.1 K; the maximum deviation of relative humidity is 9.9％,and the average deviation is 4.2％.