Spectrally selective filter design for passive radiative cooling

Name: Spectrally selective filter design for passive radiative cooling
Author: Kecebas, M. A., Mengüç, Mustafa Pınar, Kosar, A., Sendur, K.

İsim	Spectrally selective filter design for passive radiative cooling
Yazar	Kecebas, M. A., Mengüç, Mustafa Pınar, Kosar, A., Sendur, K.
Basım Tarihi:	2020-04-01
Basım Yeri	- The Optical Society
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0740-3224
Kayıt Numarası	6f28a7b4-76ae-4704-b4c3-87b37575ed19
Lokasyon	Mechanical Engineering
Tarih	2020-04-01
Notlar	United States Department of Defense Air Force Office of Scientific Research (AFOSR)
Örnek Metin	Radiative cooling is potentially one of the most innovative approaches to reducing energy density in buildings and industry, as well as achieving higher levels of energy efficiency. Several studies have reported the design of spectrally selective layered structures for daytime passive radiative cooling. However, a comprehensive design of such systems requires the spectral behavior of different materials and radiative heat transfer mechanisms to be addressed together. Here, we introduce a design methodology for daytime passive radiative cooling with thin film filters which accounts for the spectral tailoring at the visible and infrared spectrum. The major difference of this method is that it does not require a predefined target ideal emittance. The results show that higher cooling powers are possible compared to the previously reported thin-film structures, which were designed from a purely spectral perspective. The underlying mechanisms of the resulting spectral profiles, which give rise to improved performance, are investigated by wave impedance analysis. Cooling powers up to 100 W/m(2) are obtained with seven layers on Ag. The findings of this study indicate that structures with better performance in terms of cooling powers and temperature reduction rates can be obtained following the procedure discussed.
DOI	0.1364/JOSAB.384181
Cilt	37

Kaynağa git Özyeğin Üniversitesi

Aramaya Dön

Özyeğin Üniversitesi

Kaynağa git

Spectrally selective filter design for passive radiative cooling

Yazar Kecebas, M. A., Mengüç, Mustafa Pınar, Kosar, A., Sendur, K.

Basım Tarihi 2020-04-01

Basım Yeri - The Optical Society

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0740-3224

Kayıt Numarası 6f28a7b4-76ae-4704-b4c3-87b37575ed19

Lokasyon Mechanical Engineering

Tarih 2020-04-01

Notlar United States Department of Defense Air Force Office of Scientific Research (AFOSR)

Örnek Metin Radiative cooling is potentially one of the most innovative approaches to reducing energy density in buildings and industry, as well as achieving higher levels of energy efficiency. Several studies have reported the design of spectrally selective layered structures for daytime passive radiative cooling. However, a comprehensive design of such systems requires the spectral behavior of different materials and radiative heat transfer mechanisms to be addressed together. Here, we introduce a design methodology for daytime passive radiative cooling with thin film filters which accounts for the spectral tailoring at the visible and infrared spectrum. The major difference of this method is that it does not require a predefined target ideal emittance. The results show that higher cooling powers are possible compared to the previously reported thin-film structures, which were designed from a purely spectral perspective. The underlying mechanisms of the resulting spectral profiles, which give rise to improved performance, are investigated by wave impedance analysis. Cooling powers up to 100 W/m(2) are obtained with seven layers on Ag. The findings of this study indicate that structures with better performance in terms of cooling powers and temperature reduction rates can be obtained following the procedure discussed.

DOI 0.1364/JOSAB.384181

Cilt 37