Richter Jan, Staněk Kamil, Kopecký Pavel
Czech Technical University in Prague, University Centre for Energy Efficient Buildings, Třinecká 1024, Buštěhrad 273 43, Czechia.
Czech Technical University in Prague, Faculty of Civil Engineering, Department of Building Structures, Thákurova 7, Prague 166 29, Czechia.
Data Brief. 2024 Jul 17;55:110729. doi: 10.1016/j.dib.2024.110729. eCollection 2024 Aug.
The interaction of wood and moisture has to be considered in many industrial sectors. Wood is highly hygroscopic material while the absorbed moisture affects all its technical properties. One of them is a moisture permeability which is further affected by the sorption hysteresis and also differs in the three wood anatomical directions - radial, tangential, and axial. For the prediction of the dynamic hygro-thermal behaviour of wood can be used numerical simulation tools. However, data from carefully designed and controlled experiments are needed for reliable validation of these tools. This paper presents data from a 45-day dynamic laboratory experiment. The one-dimensional moisture transport in spruce wood in the tangential and radial directions under isothermal conditions was studied. The samples were exposed to cyclic step-changes in relative humidity 72-95 % at 23 °C. Data show the rate of stabilisation of moisture content in the samples, the effect of sorption hysteresis, and changes in the temperature of samples due to moisture sorption. In addition, the paper also presents material functions describing the sorption properties and moisture permeability of spruce wood. These properties were determined based on laboratory measurements using the spruce wood of the same origin as used for the dynamic experiment. The dynamic data, together with the proposed material functions can be used in the development or verification of hygro-thermal numerical simulation tools.
许多工业领域都必须考虑木材与水分之间的相互作用。木材是一种高吸湿性材料，而吸收的水分会影响其所有技术性能。其中之一是透湿性，它会进一步受到吸附滞后的影响，并且在木材的三个解剖方向（径向、切向和轴向）上也有所不同。为了预测木材的动态湿热行为，可以使用数值模拟工具。然而，需要经过精心设计和控制的实验数据来对这些工具进行可靠的验证。本文展示了一项为期45天的动态实验室实验的数据。研究了云杉木在等温条件下沿切向和径向的一维水分传输。样品在23°C下暴露于相对湿度72 - 95%的循环阶跃变化中。数据显示了样品中水分含量的稳定速率、吸附滞后的影响以及由于水分吸附导致的样品温度变化。此外，本文还给出了描述云杉木吸附特性和透湿性的材料函数。这些特性是基于使用与动态实验相同来源的云杉木进行实验室测量而确定的。动态数据以及所提出的材料函数可用于湿热数值模拟工具的开发或验证。
