Box-type double-layer curtain wall using water storage tank for evaporative cooling

The invention relates to a box-type double-layer curtain wall using a water storage tank for evaporative cooling, in particular to a box-type ventilating double-layer curtain wall using the technology of evaporative cooling of the water storage tank, belonging to the technical fields of building energy conservation, etc. The box-type double-layer curtain wall using the water storage tank for evaporative cooling is provided with an external layer ventilating curtain wall and an internal layer ventilating curtain wall which are arranged in parallel, the upper ends and the lower ends of the external layer ventilating curtain wall and the internal layer ventilating curtain wall are respectively provided with an air inlet and an air outlet, and the lower end of the air outlet is provided with the water storage tank; the same side of all the box-type double-layer curtain walls is respectively provided with a rain water pipe, a condensate pipe, a water supplementing pipe and a rain water discharge pipe, wherein the rain water pipe is connected with the water storage tank by a rain water jointing pipe; the condensate pipe is connected with the water storage tank by a condensate jointing pipe; the water supplementing pipe is connected with the water storage tank by a water supplementing jointing pipe; the rain water discharge pipe is connected with the rain water pipe; and a gravity spraying pipeline is arranged under the water storage tank. The box-type double-layer curtain wall achieves the aims of good cooling effect of leading the indoor temperature to be lower than the outdoor air dry bulb temperature, and being simple in structure.