Scalable thermochromic smart windows with passive radiative cooling regulation
Shancheng Wang(Nanyang Technological University), Tengyao Jiang(University of Wyoming), Yun Meng(Nanyang Technological University), Ronggui Yang(Huazhong University of Science and Technology), Gang Tan(University of Wyoming), Yi Long(Nanyang Technological University)
Cited by 968
Abstract
A passive turnoff Passive radiative cooling technology uses the infrared atmospheric window to allow outer space to be a cold sink for heat. However, this effect is one that is only helpful for energy savings in the warmer months. Wang et al . and Tang et al . used the metal-insulator transition in tungsten-doped vanadium dioxide to create window glass and a rooftop coating that circumvents this problem by turning off the radiative cooling at lower temperatures. Because the transition is simply temperature dependent, this effect also happens passively. Model simulations suggest that these materials would lead to energy savings year-round across most of the climate zones in the United States. —BG