Materials For Radiative Cooling To Low Temperatures

T. S. Eriksson; E. M. Lushiku; C . G. Granqvist

doi:10.1117/12.936308

1 December 1983 Materials For Radiative Cooling To Low Temperatures

T. S. Eriksson, E. M. Lushiku, C . G. Granqvist

Proceedings Volume 0428, Optical Materials and Process Technology for Energy Efficiency and Solar Applications; (1983) https://doi.org/10.1117/12.936308
Event: 27th Annual Technical Symposium, 1983, San Diego, United States

Abstract

The clear sky can act as a heat sink. Cooling to low temperatures is possible with materials which are strongly emitting in the 8-13-μm band and non-absorbing elsewhere. In this paper we discuss the resource for radiative cooling and its implementation with thin solid films (Si00.6N0.2 coatings on Al) and with slabs of certain gases (C₂H₄, C₂H₄0, and NH3 backed by Al). Results are given on spectrophotometric infrared reflectance and transmittance, computed parameters which govern the predicted cooling performance, and some preliminary field tests.

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T. S. Eriksson, E. M. Lushiku, and C . G. Granqvist "Materials For Radiative Cooling To Low Temperatures", Proc. SPIE 0428, Optical Materials and Process Technology for Energy Efficiency and Solar Applications, (1 December 1983); https://doi.org/10.1117/12.936308

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