Thermal performance of radiative cooling panels

✍ Scribed by P. Berdahl; M. Martin; F. Sakkal

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 857 KB
• Volume: 26
• Category: Article
• ISSN: 0017-9310
• DOI: 10.1016/s0017-9310(83)80111-2

✦ Synopsis

Theperformanceof panels which cool by.means of thermalinfraredheat transferto the sky is calculatedfrom basicprinciples. The efficiency of a radiativecooling panel isdefined.Computercalculations with the fullheat transferequationsare performedfor horizontalsurfaceswith infrared-transparent covers. Plotsof efficiency versusa dimensionlesstemperature difference areshownto be insensitiveto variationsin air temperature, wind speed,andsky radiance,resultingin plots analogousto standardefficiency curvesfor solar panels. Experimentalmeasurementsshow that,for most applications,white paintis a betterradiatorthan aluminizedpolyvinyl fluoride film.