▎ 摘　　要

NOVELTY - Composite-layer phase-change ventilation wall comprises basal layer; indoor-side phase-change module and outdoor-side phase-change module arranged on the upper surface of the base layer and connected to each other, in the vertical direction, the indoor-side phase-change module is provided with a first air channel, second air channel is provided in the outdoor-side phase-change module, the first air channel and the second air channel are spaced apart; at one end close to base layer, a first through hole and a second through hole are arranged at intervals from bottom to top in the outdoor phase change module, the second air channel connected with the outside through the first through hole and second through hole; the first through hole extends horizontally to first air channel through the second air channel, connected with first air channel with second air channel; fence, the fence is provided on the upper surface of indoor-side phase-change module and outdoor-side phase-change module. USE - The phase-change ventilation wall is useful for building (claimed). ADVANTAGE - The phase-change ventilation wall: adopts different ventilation operation strategies in winter and summer, so as to realize full-season operation, specifically, it plays the role of increasing heat dissipation and heat insulation in summer, and plays the role of strengthening heat storage and heat preservation in winter. DETAILED DESCRIPTION - Composite-layer phase-change ventilation wall comprises basal layer; indoor-side phase-change module and outdoor-side phase-change module arranged on the upper surface of the base layer and connected to each other, in the vertical direction, the indoor-side phase-change module is provided with a first air channel, second air channel is provided in the outdoor-side phase-change module, the first air channel and the second air channel are spaced apart; at one end close to the base layer, a first through hole and a second through hole are arranged at intervals from bottom to top in the outdoor phase change module, the second air channel connected with the outside through the first through hole and the second through hole; the first through hole extends horizontally to the first air channel through the second air channel, connected with the first air channel with the second air channel; fence, the fence is provided on the upper surface of the indoor-side phase-change module and the outdoor-side phase-change module, and inside is hollow to form a cavity, the cavity connected with the first air channel and the second air channel; at least two unpowered air caps, the at least two unpowered air caps are arranged on the upper surface of the fence and connected with the cavity, part of the unpowered air caps are arranged corresponding to the first air channel, and the rest of the unpowered air caps are arranged corresponding to the second air channel; heating device, the heating device is arranged on a side of the outdoor-side phase-change module away from the indoor-side phase-change module, air inlet of the heating device is arranged corresponding to the second through hole, and the air outlet of the heating device is arranged corresponding to the first through hole; the phase change temperature of the indoor-side phase-change module is 26-30°C, and the phase change temperature of the outdoor phase change module is 31-35°C. An INDEPENDENT CLAIM is also included for building comprising composite-layer phase-change ventilation wall. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the composite-layer phase-change ventilation wall.