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About: Selective surface     Goto   Sponge   NotDistinct   Permalink

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Type: softwareyago:WikicatOpticalFiltersyago:Artifact100021939yago:Device103183080yago:Filter103339643yago:Instrumentality103575240yago:Object100002684yago:PhysicalEntity100001930yago:Whole100003553 New Facet based on Instances of this Class

In solar thermal collectors, a selective surface or selective absorber is a means of increasing its operation temperature and/or efficiency. The selectivity is defined as the ratio of solar radiation absorption (αsol) to thermal infrared radiation emission (εtherm). Selective surfaces take advantage of the differing wavelengths of incident solar radiation and the emissive radiation from the absorbing surface: