RE2020 Thermal Study
Valence, AURA

In Valence, thermal calculations sit at the hinge between continental and Mediterranean influences: heating demand remains significant while summer discomfort, long a secondary concern, becomes a sizing factor on commercial developments and poorly protected dual-aspect dwellings. The mistral, frequent in the Rhône corridor, bears directly on the airtightness of the building envelope and makes the air-permeability test decisive. Finally, the large logistics volumes of the basin follow a logic of their own, where the focus shifts to the building envelope, airtightness and the frugality of uses.

Summer comfort is the sticking point of the RE2020 in Valence: on exposed façades, the degree-hours (DH) threshold is quickly exceeded, all the more so in the south of France. Dynamic thermal simulation arbitrates between thermal inertia, solar shading and natural ventilation before the building envelope is fixed.