Application of the Taguchi Method to Optimize the Process Parameters of a Single-slope Solar Still Integrated with a Solar Pond
J. Environ. Nanotechnol., Volume 14, No 3 (September 2025) pp. 328-337
Abstract
This study employs the Taguchi optimization method to enhance the performance of a single-slope solar still (SSSS) integrated with a solar pond. Key variables, including solar radiation (600 to 1000 W/m²), water depth (4 to 8 cm), inlet water temperature (30 to 40 °C), and wind speed (1 to 5 m/s), were tested using an L9 orthogonal array. Signal-to-noise ratio analysis was used to identify optimal settings, while analysis of variance determined the most significant factors. Regression analysis established the relationship between input parameters and system outputs, including freshwater yield and basin water temperature. The highest productivity was achieved under conditions of 1000 W/m² solar radiation, a 4 cm water depth, a 3 m/s wind velocity, and a 40 °C inlet temperature. Under optimized conditions, the solar still exhibited a predicted productivity of 1.131 kg/m², with an experimental deviation of 9.31%. The basin water temperature showed a minimal deviation of 2.18%. These results technically confirm the robustness of the regression models and the reliability of the optimized process parameters. The strong agreement between predicted and observed values confirms the reliability of the model and the effectiveness of the optimization strategy in improving the solar still performance.
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Reference
Abdulridha, H. O., Hameed, H. G., and Merzah, B. N., Performance study for single slope solar still integrated with different types of solar collectors, Desalin. Water Treat., 319, 100538(2024).
https://doi.org/10.1016/j.dwt.2024.100538
Aksoğan, K. A., and Toptaç, Y., Implementation of Taguchi method, ANOVA, and regression analyses to enhance char yield by carbonization in lignite-biomass blends. Int. J. Coal Prep. Util., 45(2), 264–280(2025).
https://doi.org/10.1080/19392699.2024.2333825
Almajali, T. A. H., Ismail, F. B., Gunnasegaran, P. A., Al Shurafa, S. M., and Kazem, H. A., Exploring the future of solar stills: recent breakthroughs in performance enhancement, Sep. Purif. Rev., 54(2), 105–127(2025).
https://doi.org/10.1080/15422119.2024.2366879
Antony, J., Bhat, S., Mittal, A., Jayaraman, R., Gijo, E. V., and Cudney, E. A., Application of Taguchi design of experiments in the food industry: a systematic literature review, Tot. Qual. Manage. Bus. Excellence, 35(5–6), 687–712(2024).
https://doi.org/10.1080/14783363.2024.2331758
Ashok, R. and Sakthivel, T. G., A Complete Review of Augmenting Solar Desalination Efficiency with PCMs, Res. Eng., 25, 104421(2025).
https://doi.org/10.1016/j.rineng.2025.104421
Chen, W. H., Chen, K. H., Chein, R.Y., Ong, H. C. and Arunachalam, K. D., Optimization of hydrogen enrichment via palladium membrane in vacuum environments using Taguchi method and normalized regression analysis, Int. J. Hydrogen Energy, 47(100), 42280–42292 (2022).
https://doi.org/10.1016/j.ijhydene.2022.01.060
Dhivagar, R. and Mohanraj, M., Optimization of performance of coarse aggregate-assisted single-slope solar still via Taguchi approach, J. Renew. Energy Environ., 8(1), 13–19(2021).
https://doi.org/10.30501/JREE.2020.232742.1112
Durakovic, B. and Prakash, M. K., Minimization of milling-induced residual stresses in AISI 1045 steel: process optimization using design of experiments taguchi method, J. Mater. Eng. Perform., 33(15), 7721–7727(2024).
https://doi.org/10.1007/s11665-024-09570-9
Fatima, F., Tiwari, N. P., and Singh, V., Process optimization for biosurfactant production by Bacillus aryabhattai SPS1001 using Taguchi method, Appl. Biochem. Biotechnol., 197(1), 19–34(2025).
https://doi.org/10.1007/s12010-024-05019-w
Hussein, A. K., Rashid, F. L., Rasul, M. K., Basem, A., Younis, O., Homod, R. Z., Attia, M. E. H. and Mudhar, A. A., Mohamed, B. B. H., Bagh, A. and Sajjad F. A., A review of the application of hybrid nanofluids in Solar still energy systems and guidelines for prospects, Solar. Energy, 272, 112485 (2024).
https://doi.org/10.1016/j.solener.2024.112485
Jha, S. K. and Ghosh, A., Towards Sustainable Water Resources: A Critical Review of Evaluating Traditional and Solar-Based Desalination Technologies and Innovations, Desalin. Water Treat., 322, 101246(2025).
https://doi.org/10.1016/j.dwt.2025.101246
Kabeel, A. E., Attia, M. E. H., Abdelgaied, M., Essa, F. A. and Aboud, M. F. A., Comparative performance of spherical, hemispherical, and single-sloped solar distillers, Desalin. Water Treat., 317, 100051(2024).
https://doi.org/10.1016/j.dwt.2024.100051
Kamalakannan, V., Rajaram, S., Iyyadurai, J. and Arockiasamy, F. S., Fundamental study on influence of independent factors on response variable using response surface methodology and Taguchi method, Eng. Proc., 61(1), 37(2024).
https://doi.org/10.3390/engproc2024061037
Karthick, M., Joe, P. G. S., Appadurai, M. and Jeshurun, S. B., Productivity Enhancement of a Single Slope Solar Still with Energy Storage Medium, Mater. Today: Proce., 60, 889–893(2022).
https://doi.org/10.1016/j.matpr.2021.09.548
Kouravand, A., Shabestari, S. T., Zirak, N., Kasaeian, G., Fereidooni, L. and Kasaeian, A., Thermal management strategies for a portable double slope solar still with energy storage: An experimental study for enhancing the performance, Next Energy, 8, 100244(2025).
https://doi.org/10.1016/j.nxener.2025.100244
Kumar, A., Rana, R. S., Purohit, R., Namdev, A., Saxena, K. K. and Atul, K., Optimization of dry sliding wear behavior of Si3N4 and Gr reinforced Al--Zn--Mg--Cu composites using taguchi method, J. Mater. Res. Technol., 19, 4793–4803(2022).
https://doi.org/10.1016/j.jmrt.2022.06.172
Kumar, V., Das, B. and Gupta, R., Energy, exergy, economic and environmental analyses of single slope solar still employing cylindrical cement fins and wick material for thermal energy storage, J. Energy Storage, 110, 115360(2025a).
https://doi.org/10.1016/j.est.2025.115360
Kumar, V., Das, B. and Gupta, R., Performance enhancement of single slope solar still with sensible heat storage system: An experimental investigation under climatic conditions of Northeast India, J. Sol. Energy Eng., 147(3), 031013 (2025)..
https://doi.org/10.1115/1.4067663
Li, J., Huang, W., Xie, Y., Yang, J. and Zhao, M., The parameters optimization of robotic polishing with force controlled for mold steel based on Taguchi method, J. Brazilian Soc. Mech. Sci. Eng., 46(5), 313(2024).
https://doi.org/10.1007/s40430-024-04889-9
Liu, H. and Zhu, W., Optimisation analysis by numerical simulation of adding internal fins in photovoltaic/thermal system based on Taguchi method, Appl. Therm. Eng., 266, 125635(2025).
https://doi.org/10.1016/j.applthermaleng.2025.125635
Mohammed, A.H., Shmroukh, A.N., Ghazaly, N.M. and Kabeel, A.E., Performance analysis of an SPD integrated with a stepped pyramid solar still: Experimental study, Environ. Dev. Sustain., 1–20 (2024).
https://doi.org/10.1007/s10668-024-05272-3
Praveen, N., Mallik, U. S., Shivasiddaramaiah, A. G., Hosalli, R., Prasad, C. D. and Bavan, S., Machinability study of Cu-Al-Mn shape memory alloys using Taguchi method, J. Inst. Eng. India Ser., 106(1), 231-243(2024).
https://doi.org/10.1007/s40033-023-00629-w
Ramzy, K., Abdelgaleel, M., Kabeel, A. E. and Mosalam, H., Performance of a single slope solar still using different porous absorbing materials: an experimental approach, Environ. Sci. Pollut. Res., 30(28), 72398–72414(2023).
https://doi.org/10.1007/s11356-023-27465-5
Saad, F. O., Mankai, S., Madiouli, J., Chemkhi, S., Shigidi, I. and Khan, M. I., Effect of phase change materials melting temperature on improving single slope solar still productivity, J. Energy Storage, 97, 112927(2024).
https://doi.org/10.1016/j.est.2024.112927
Sahu, R. and Tiwari, A. C., Performance enhancement of single slope solar still using nanofluids at different water depth, Desalin. Water Treat., 317, 100046 (2024).
https://doi.org/10.1016/j.dwt.2024.100046
Shubham, S. K., Pandey, A. and Purohit, R., Study of tribological behavior using the Taguchi method and pin-on-disc machine along with mechanical properties of hybrid polymer composites, Colloid Polym. Sci., 303(4), 563-577(2025).
https://doi.org/10.1007/s00396-025-05377-9
Thiyagarajan, P. K., Gokuldas, N. K., Rajendran, A. K., Saravanakumar, K. S., Vasudevan, M., Kannan, M., Prasad, C. D., Aden, A. A. and Srinivasa, G., Investigating the combinations of operating parameters of PEMFC computational results using the Taguchi Method, Int. J. Thermofluids, 27, 101162(2025).
https://doi.org/10.1016/j.ijft.2025.101162
Yuvaperiyasamy, M., Senthilkumar, N. and Deepanraj, B., Experimental investigation on the performance of a pyramid solar still for varying water depth, contaminated water temperature, and addition of circular fins, Int. J. Renew. Energy Develop., 12(6), 1123–1130(2023).
https://doi.org/10.14710/ijred.2023.57327
Yuvaperiyasamy, M., Senthilkumar, N. and Deepanraj, B., Enhancing Pyramid Solar Still Performance through Varied Heat Storage Materials and Water Depths: A Comprehensive Experimental Study, Recent Patents Mech. Eng., 18(2), 148–157(2025).
