Dynamic glazing with switchable solar reflectance for radiative cooling and solar heating

Integration of daytime radiative cooling and solar heating

“…However, synergistic multispectral regulation based on electric regulation is still challenging because of the difficulty in obtaining long-spectral (from visible to mid-IR) transparent conductive electrodes and the unclear relationship between the deposition structure and performance. 13 , 14 , 15 Rao et al. 13 prepared metal meshes with low-sheet-resistance (R s = 22.4 Ω/sq), high-optical-transmittance (T UV−vis = 85.63%, T near-IR = 87.85%, and T mid-IR = 84.87%), and long-wavelength transparent conductive electrodes.…”

“…Although this field has been widely explored in the past few years, it is still in its early stages. To further promote research in this field and effectively solve its problems, we summarize the previous results from two aspects, switch mode (including electrical, 13 , 14 , 15 thermal-responsive, 16 , 17 , 18 , 19 , 20 and mechanical regulations 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ) and collaborative mode, 29 , 30 and introduce their principles, characteristics, and progress. In addition, unresolved scientific and technical issues associated with the outlook are presented in this paper.…”

Radiative cooling surfaces: principles, performance evaluation and applications

“…Experimental tests have been done to compare two smallscale chambers, one with a semi-transparent radiative cooling glass and one with regular glass, which indicates that the chamber equipped with a semi-transparent radiative cooling glass has a lower interior air temperature and the temperature difference can reach 16.4 °C [46]. In the ref [47] a double-mode glazing panel is proposed, which is able to alter the amount of its reflectance (17 percent vs 89 percent) using a silver film on a clear glass of glazing. On cold days transparency let 70 percent of sunshine pass through and only absorbs 13 percent, while on warm days, the silver glazing works as radiative cooling and provides cooling with the power of 20 W/m 2 to 60 W/m 2 [48].…”

“…In the ref [47] a double-mode glazing panel is proposed, which is able to alter the amount of its reflectance (17 percent vs 89 percent) using a silver film on a clear glass of glazing. On cold days transparency let 70 percent of sunshine pass through and only absorbs 13 percent, while on warm days, the silver glazing works as radiative cooling and provides cooling with the power of 20 W/m 2 to 60 W/m 2 [48].…”

Recent Advances in Material Engineering and Applications for Passive Daytime Radiative Cooling

“…The choices of external activation include stretching/compression, [ 154 ] wetting, [ 155,156 ] mechanical moving parts, [ 157–159 ] physical flipping [ 160–164 ] and applied voltage. [ 165 ] Zhao et al. [ 154 ] showed a dynamic switching strategy based on the dynamic cavitation of silicone coatings for efficient energy‐saving cooling and heating.…”