## 1 Introduction
The purpose of using this tool was to enhance heat transfer by convection; consequently, the results relative to airflow rate and room heating rate indicated that use of DWVG raised performance by 28.5% and 39.4%, respectively, compared to the case without DWVG. [PERSON] et al. [47] tested a solar chimney system made of a Trombe wall integrating RT42 macro-encapsulated paraffin wax with three distinct imposed heat fluxes of 500 W/m\({}^{2}\), 600 W/m\({}^{2}\) and 700 W/m\({}^{2}\); each experiment was run for 24 h. These experimental results showed that paraffin wax could efficiently store solar thermal energy during the day and release it several hours later; moreover, the duration of circulating air created from heat transfer exchanges could extend the period of released heat, especially at night, to around 14 h for all cases investigated. [PERSON] et al. [48] studied the thermal performance of a newly ventilated Trombe wall integrating phase change materials (PCMs-VTW) as well as its optimization (melting temperature and PCM thickness) during the hot and cold season of a region set in China. The numerical model was used to simulate the energy performance of this newly ventilated Trombe wall. According to results, the energy storage and release efficiency (ESRE) achieved a 10% boost in summer and 13% in winter. This wall was further studied with respect to cooling performance with the PCMs embedded into the storage wallboard: the exterior PCM wallboard was to store cooling at night, whereas the interior PCM wallboard was to exchange radiant cooling. Results pointed to a reduction in energy consumption for cooling [49]. Alongside the development of the Trombe wall and in an attempt to reduce energy consumption in the building sector, a composite Trombe wall was developed both with and without PCM [22; 25]. [PERSON] et al. [25] tested a small-scale composite solar wall incorporating PCM (hydrated salts) conditioned in rectangular bricks. Test results underscored the high thermal energy storage of these hydrated salts (H\({}_{2}\)O + CaCl\({}_{2}\) + KCl + various additives), which can store much more heat than the same volume of concrete. The authors also proved that these bricks (thickness: 23 mm) allow recovering solar gains with a shorter time delay (approx. 2 h, 40 min), which had been the drawback in winter when a house wall required additional energy supply (i.e., heat gain) at the end of the day. Nevertheless, such a wall can be considered to be advantageous in winter when used for structures occupied during the day, e.g., offices, shopping centers, hospitals, universities, schools. [PERSON] et al. [22] created a numerical model using the Dymola/Modelica software and its various libraries [50; 51] in order to simulate two cases of a solar wall component. The first case sought to compare experimental and numerical results for a composite Trombe wall equipped with a concrete storage wall as a means of validating the model. The second case was intended to use the validated model to conduct other simulations of the composite Trombe wall, in which concrete was replaced by a wall integrating micro-encapsulated PCM. Recent studies focused on implementing PCMs as thermal energy storage into the hybrid system with active cooling and hybrid ventilation. [PERSON] et al. [52] studied the numerical modeling of a system of hybrid PCMs working on the one hand as a ventilated Trombe wall integrating phase change materials (PCMs-VTW) and on the other as a photovoltaic/thermal system integrating a phase change material (PV/T-PCM). Based on the results obtained, the system is able to provide a stable indoor thermal environment. This new hybrid system incorporating PCMs was then investigated with the machine learning-based, data-driven model in order to predict on-site renewable electricity generation [53; 54; 55], which involved system parameter optimization [56].