Factors influencing solar energy collector efficiency

P. K. C. Pillai and R. C. Agarwal

Applied Energy, 1981, vol. 8, issue 3, 205-213

Abstract: The effects of glazing, solar flux, emissivity and absorptivity of the absorber surface on collector performance have been predicted for different plate temperatures (60°C and 100°C). At low solar flux levels (200-600 W m-2) double- or triple-glazed collectors are superior to single-glazed collectors. For collectors with selective absorber coatings, the optimal number of glazing panes is two. Higher values of absorptivity and lower values of emissivity are more effective for single-glazed than for double-glazed collectors.

Date: 1981
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