Buildings account for almost 41% of the world’s energy consumption, which contributes to 30% of the annual greenhouse gas emissions . Trombe wall integrating phase change materials (PCM) is a particular passive solar technique that has shown great potentialities and can reduce effectively the building energy consumption. During a cold day, this wall is heated due to the incident solar radiation, melting the PCM. While at night, when the outdoor temperature falls below the phase change temperature, the heat stored...