Energy, exergy, economic and environmental evaluation of solar desalination system comprising different enhanced surface absorber plates

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Energy, exergy, economic and environmental evaluation of solar desalination system comprising different enhanced surface absorber plates

Year : 2023

Publisher : Elsevier B.V.

Source Title : Desalination

Document Type :

Abstract

In the present work, energy, exergy, economic and environmental evaluation of single slope solar still (SS) using multiple enhancement techniques namely, sandblasting, milling, and shot-blast aided corrugation are investigated. Totally four SS types are considered, namely (1) conventional SS, (2) sandblasted surface absorber-SS, (3) milled surface absorber-SS, and (4) shot-aided corrugated surface absorber-SS. Among the methods employed, the shot-blasted aided corrugated-absorber SS produced a maximum yield of 3275 mL/m2/day, which was 1.46 times superior to that of traditional/conventional solar still (CSS) yield (2250 mL/m2/day). Activated carbon with black paint-based spray coating (14 vol%) improved mean absorptivity by 5 %, as a result, the thermal efficiency of the SS was increased up to 57.2 % as compared to traditional SS. The exergoeconomic factor of the SS with sandblasted, milling, and shot-blasted aided corrugation was SS was 25.2, 62.8, and 98.5 % respectively greater than CSS. More importantly, the energy payback time for CSS, sandblasted SS, milling SS, and shot-blasted SS were 1.49, 1.498, 1.396, and 1.065 years, respectively. Also, the exergy payback time for CSS, sandblasted SS, SS with milling, and SS with shot-blast aided corrugation were 5.99, 5.05, 3.90, and 3.23 years respectively.