Development of a sensor to detect liquid water transfer through water resistive barriers

现代建筑围护结构的性能要求越来越高。当我们降低建筑组件的热传递率时，任何出现在建筑组件中的液态水 ** 都会成为一个严重的性能管理问题。防水层（WRB）是一种薄膜，其设计目的是阻止外部覆层后面的液态水。基于文献综述，已经确定目前的测试方法非常主观，需要开发一种更好、更精确和可量化的方法来测试WRB的液态水阻力。该研究项目的主要目标是开发一种传感器，该传感器将能够区分 ** 水蒸气和液态水，然后量化液态水通过WRB的泄漏率。本研究项目的成果 ** 将有助于提高外部建筑物 ** 围护结构的水分管理性能，为 ** 建筑物围护结构应用提供有关WRB特性的真实、可靠和准确的信息。

Performance requirements of modern building envelopes are becoming much more demanding. As we reduce**thermal transmittance through the building assemblies, any liquid water that shows up in the building assembly**becomes a serious performance management issue. A water resistive barrier (WRB) is a thin membrane that is**designed to resist liquid water that has found its way behind the exterior cladding.Based on the literature**review, it has been determined that the current test methods are very subjective and there is a need for**developing a better, more precise and quantifiable method for testing the liquid water resistance of WRBs. The**primary objective of this research project is to develop a sensor which will be able to differentiate between**water vapor and liquid water and then quantify the liquid water leakage rate through WRBs. The outcomes**from this research project will help improve the moisture management performance of exterior building**envelopes by providing realistic, reliable and accurate information regarding the characteristics of WRBs for**building envelope applications.