Analysis of radiative cooling effect and Bragg reflector

Badieirostami, Majid; HosseiniBiuki, SeyedHossein

doi:10.47176/ijpr.24.4.51900

Analysis of radiative cooling effect and Bragg reflector

Document Type : Original Article

Authors

Majid Badieirostami

SeyedHossein HosseiniBiuki

School of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran, Iran

https://doi.org/10.47176/ijpr.24.4.51900

Abstract

Radiative cooling structures can reach a temperature below the ambient temperature by reducing the absorption of radiative energy from the surrounding environment, while maximizing the radiative energy emission. These structures have received extensive attention given their potential to reduce buildings’ electrical power consumption. To achieve this goal, a structure with specific electromagnetic properties regarding wave absorption and transmission should be designed. The proposed structure should simultaneously have 1) good reflectance across the Sun radiation spectrum, and 2) good emittance (absorptance) in the atmospheric window wavelength range. In this article, the SU-8 photoresist material was proposed to fulfill the emission condition, and to fulfill the reflection condition, the Bragg reflector was considered and analyzed.

Keywords

radiative cooling

Bragg reflector

ABCD matrix

Subjects

Optics and Photonics

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