Building structure window with optically transparent and self-cooling coatings

A window assembly for a building structure comprising a building structure window and optically transparent and self-cooling coatings, wherein the optically transparent and self-cooling coatings comprise a multi-layered structure comprising:

• a passive cooling layer;
• and
• a near-infrared radiation absorption layer;
• wherein the layers being disposed on the building structure window;
• wherein the optically transparent and self-cooling coatings together have a visible light transmittance of more than approximately 70%;
• wherein, under a ventilated condition in which air beneath the building structure window is exchanged with outdoor air, the air temperature beneath the building structure window is reduced by at least approximately 2° C.;
• wherein, under an insulated condition in which the air beneath the building structure window is isolated from the outdoor air, the air temperature beneath the window is reduced by at least approximately 8° C.;
• and
• wherein the passive cooling layer comprises:
• approximately 20-45 wt % of metal oxide;
• approximately 3.0-55 wt % of binder;
• approximately 1.0-5.0 wt % of dispersing agent;
• approximately 5.0-10 wt % of wetting agent;
• and
• approximately 10-50 wt % of water.