In the context of improving energy efficiency and thermal comfort in the building, the use of phase change materials (PCMs) is one of the suggested solutions. The proposed integration solutions concern the building envelope as well as the applications related to its operation. The study of the incorporation of PCM in the walls of the building was the subject of numerous works. However, the antisymmetric character of storing/recovering energy management in the walls is less controlled and do not fit the optimal conditions. In this study, a solution based on the direct integration of a stabilized PCM (gel) in an envelope including ventilation channels, was proposed to overcome this problem of antisymmetry storing/recovering and fitting with different fixed ambient conditions. The final aim is to develop the optimization strategy of a wall combining the heavy inertia offered by the PCM, intra-ventilation control and the contribution to air renewal energy demand.

In this context, an experimental study of a concrete block system is conducted to test the thermal response of this configuration by the application of cyclic solicitations. The comprehension of this integrated constructive solution essentially passes by the possession of validated numerical tools. For this, two models have been developed. The first model using the electrical–thermal analogy, based on an RC equivalence, is distinguished by its relative simplicity and weak time computing demand. Each of these two factors, R and C summarise the system properties and has a direct influence on the building transient simulations over a year. The second one is based on direct numerical simulation DNS of the energy and fluid flow equations using commercial code COMSOL Multiphysics. Such DNS is time consuming and could not be used to simulate over a year but aims only to validate the first RC circuit approach. A comparison of these two models with the idealised experimental data was carried out and allowed the validation of the thermal behaviour of the solution based on the integration of the PCM with core ventilation.

在提高建筑物的能源效率和热舒适性的背景下，相变材料（PCM）的使用是建议的解决方案之一。拟议的集成解决方案涉及建筑物围护结构以及与其运行相关的应用程序。关于将PCM掺入建筑物墙壁的研究是许多工作的主题。但是，在墙壁中存储/回收能量管理的反对称特性受到的控制较少，并且不适合最佳条件。在这项研究中，提出了一种基于稳定的PCM（凝胶）在包括通风通道的信封中直接集成的解决方案，以克服这种反对称性存储/恢复以及在不同的固定环境条件下进行拟合的问题。

在这种情况下，对混凝土砌块系统进行了实验研究，以通过循环拉拔法测试这种结构的热响应。对这种集成的构造性解决方案的理解实质上是通过拥有经过验证的数值工具来实现的。为此，已经开发了两个模型。基于RC等效性的第一个使用电热模拟的模型的特点是相对简单，计算时间要求低。R和C这两个因素中的每一个都总结了系统属性，并且对一年中的建筑物瞬态仿真有直接影响。第二个是使用商业代码COMSOL Multiphysics基于能量和流体流动方程的直接数值模拟DNS。这种DNS非常耗时，一年内无法用于模拟，而只是旨在验证第一种RC电路方法。将这两个模型与理想的实验数据进行了比较，并基于PCM与堆芯通风的集成，验证了溶液的热性能。