10.1007/s40095-022-00534-0

Modeling and design of a new system cascade solar still test for thermal performance

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  • Wafae El Hafid*1,
  • Souad Abderafi1,
  • Kamal Amghar2,
  • Hafsa Bouhrim3,
  1. MOSEM2PI, Mohammadia Engineering School (EMI), Mohammed V University in Rabat, Rabat, MA
  2. LME, Faculty of Sciences, First Mohammed University, Oujda, 60000, MA LSIA, National School of Applied Sciences (ENSAH), Abdelmalek Essaâdi University, Al Hoceima, MA
  3. LMMT Laboratory, Electromechanical Department, Higher National School of Mines of Rabat (ENSMR), Rabat, MA

Published in Issue 2022-09-20

How to Cite

El Hafid, W., Abderafi, S., Amghar, K., & Bouhrim, H. (2022). Modeling and design of a new system cascade solar still test for thermal performance. International Journal of Energy and Environmental Engineering, 14(3 (September 2023). https://doi.org/10.1007/s40095-022-00534-0
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Abstract

Abstract The objective of this paper is to study the performance of a cascade solar still as a function of the variation in solar intensity and the thickness of the glass cover. In this context, the present work examined different cities of Morocco; however, Tetouan (north of Morocco), Oujda (west of Morocco), Casablanca (east of Morocco) and Ouarzazate (south of Morocco) were targeted. In addition, the effect values of 3, 5 and 7 mm glass cover thicknesses were studied. The effect of these parameters on the water productivity of the inclined cascade solar still was performed by simulation using ANSYS-FLUENT software. The simulation model was successfully validated using the experimental data available in the literature. The results show that the absorber plate temperature and the hourly productivity of the inclined cascade solar still with a glass cover thickness of 3, 5 and 7 mm, under the climatic conditions of Ouarzazate region, reach maximum values of 78; 75 and 71 °C and 1.78; 1.58 and 1.26 kg/m 2 per hour at 2 pm, compared to other regions. The results of this work show that the new design of the inclined cascade solar still with a minimum thickness of the glass cover in a region with a higher solar intensity increase the temperature of the absorber plate, causing an increase in the thermal energy inside the solar still, resulting in a rapid increase in water evaporation, whissch has the role of increasing the production of distilled water compared to other types of solar still. On the other hand, the economic analysis of the studied system shows that the cost of distilled water does not exceed 0.0093$/L.

Keywords

  • Cascade solar still,
  • Numerical simulation,
  • Glass cover,
  • Solar intensity,
  • Productivity,
  • Cost of distilled water

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