Transparent spacecraft smart thermal control device based on VO₂ and hyperbolic metamaterials

Abstract

Effective spacecraft thermal control technologies are essential to avoid undesirable effects caused by extreme thermal conditions. In this paper, we demonstrate a transparent smart radiation device (TSRD) based on vanadium...

Synchronous Radiative Cooling and Thermal Insulation in SiO2/Poly(vinyl alcohol) Composite Aerogel for Energy Savings in Building Thermal Management

“…As for hydrogel, it attenuates overcooling at low temperatures in the daytime while continuing to cool at night. Modulation of mid-infrared emission based on W-VO 2 is a novel way to address overcooling issues, however, the matching of layers of the mid-infrared-emitting resonator is complex and requires to be precise, 33 and the photothermal effect of W-VO 2 has an impact on the radiative cooling performance. 34 As described above, many strategies were proposed to improve radiative cooling performance or to alleviate overcooling; however, insulating properties for radiative cooling materials are often overlooked.…”

A tunable infrared emitter based on phase-changing material GST for visible-infrared compatible camouflage with thermal management

“…An object at a temperature higher than absolute zero (0 K) continuously radiates electromagnetic waves into free space, and this phenomenon is known as thermal radiation. 1 Therefore, the ability to control thermal radiation in the near- and far-field is essential for some practical applications, including solar energy harvesting, 2,3 infrared camouflage, 4 spacecraft thermal control devices, 5 near-field radiative heat transfer, 6 and passive daytime radiative cooling. 7 According to Planck's blackbody radiation law, the thermal radiation spectra of most objects are mainly located in the infrared bands.…”