期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 206, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.solmat.2019.110319
关键词
Radiative cooling; Solar filter; Passive cooling; LWIR transparent
资金
- Advanced Research Projects Agency -Energy, U.S,. Department of Energy [DE-AR0000576]
Passive radiative daytime cooling is a low-cost solution to improve human comfort and reduce the energy demands of cooling on a global scale. We present the first demonstration of direct full-sun daytime radiative cooling using an all-polymer filter that blocks solar irradiance while maintaining high transmittance in the long-wave infrared (LWIR). Warm objects and surfaces radiatively transfer heat through the polymer solar filter to the cold sink of space, decreasing temperatures up to 10 degrees C during day and night. The polyethylene (PE) filter exploits scattering by size-controlled air pores to maximize reflection of solar photons, while preserving the LWIR transparency inherent to PE. We demonstrated cooling power of over 110 W/m(2) for an emissive surface placed beneath the solar filter. Scalable, low-cost manufacturing of a radiative cooling polymer solar filter allows direct full-sun daytime cooling of heat-emitting surfaces in a variety of settings.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据