EXPERIMENTAL INVESTIGATION OF A SOLAR WATER DISTILLATION SYSTEM INTEGRATED WITH AN EVACUATED TUBE COLLECTOR AND A STEPPED EVAPORATION CHAMBER

Ngo The Phong1, Bui Duc Thuan1, Nguyen Van Sang1, Nguyen Truong Giang1, Nguyen Xuan Long1, Pham Van Viet2,
1 MTT63DH class, Faculty of Marine Engineering, Vietnam Maritime University
2 Faculty of Marine Engineering, Vietnam Maritime University

Nội dung chính của bài viết

Tóm tắt

This paper presents an experimental investigation to evaluate the performance of a solar-powered water distillation system integrated with evacuated tube collectors and a stepped evaporation chamber. The system was operated under outdoor conditions with a normalized evaporation surface area of 0.8 m². Key parameters, including solar radiation, characteristic temperatures, and freshwater productivity, were recorded at 30-minute intervals.

The results indicate that the system achieved an average productivity of 3.30 kg/m²·day and an energy efficiency of approximately 39.5–41%. Regression analysis reveals a strong linear correlation between solar radiation and freshwater yield (R² ≈ 0.98).

Comparative evaluation with previous studies demonstrates that the proposed system outperforms conventional solar stills and exhibits comparable performance to advanced stepped configurations. This study provides both scientific and experimental evidence supporting the application of solar distillation systems in maritime and coastal regions.

Chi tiết bài viết

Tài liệu tham khảo

[1] Sumiati, S., Younus, M., Manaf, H. A., Irawan, B. & Yanping, S. (2025), Freshwater Scarcity as a Sustainability Indicator: An Empirical Assessment of Its Future Economic and Environmental Impacts.
Doi: 10.21203/rs.3.rs-8186030/v1.
[2] Matta, G., Pant, G., Kumar, P. & Pal, R. (2026), Navigating Water Scarcity for Global Climate Change and Ramifications, World Water Policy, Vol.12(1), pp.e70055, Doi: 10.1002/wwp2.70055.
[3] Kabeel, A. E., Omara, Z. M. & Essa, F. A. (2014), Improving the performance of solar still by using nanofluids and providing vacuum, Energy Convers. Manag., Vol.86, pp.268-274.
Doi: 10.1016/j.enconman.2014.05.050.
[4] Winfred Rufuss, D. D., Iniyan, S., Suganthi, L. & Davies, P. A. (2016), Solar stills: A comprehensive review of designs, performance and material advances, Renewable and Sustainable Energy Reviews, Vol.63, pp.464-496.
Doi: 10.1016/j.rser.2016.05.068.
[5] Murugavel, K. K. & Srithar, K. (2011), Performance study on basin type double slope solar still with different wick materials and minimum mass of water, Renew. Energy, Vol.36(2), pp.612-620.
Doi: 10.1016/j.renene.2010.08.009.
[6] Alwan, N. T., Ali, B. M., Alomar, O. R., Abdulrazzaq, N. M., Ali, O. M. & Abed, R. M. (2024), Performance of solar still units and enhancement techniques: A review investigation, Heliyon, Vol.10(18), .e37693.
Doi: 10.1016/j.heliyon.2024.e37693.
[7] Panchal, H. N. & Patel, S. (2017), An extensive review on different design and climatic parameters to increase distillate output of solar still, Renewable and Sustainable Energy Reviews, Vol.69, pp.750-758.
Doi: 10.1016/j.rser.2016.09.001.
[8] Sinha, A., Venkatesh, S. & Kumar, R. S. (2024), Enhancing performance of solar stills - A review, Environ. Prog. Sustain. Energy, Vol.43(3), e14339.
Doi: 10.1002/ep.14339.
[9] An, T. X., Viet, H Van & Bao, N. T. (2016), Theoretical and experimental research of Carocell solar still, Journal of Technical Education Science.
[10] Nghia, N. H. et al. (2025), Experimental production of fresh water by spraying method using solar energy, J. Fish. Sci. Technol., Vol.02, pp.57-78.
[11] Viet, H. Van, An, T. X. & Bao, N. T. (2016), Experimental study of a single basin solar water still coupled with evacuated glass tubes and external condenser, Journal of Technical Education Science, Vol.37, pp.50-51.
[12] Huynh, V. N., Dang, V. H. & Nguyen, M. P. (2024), Numerical investigation on effects of step number on the stepped solar still, Journal of Technical Education Science, Vol.19(1), pp.1-2.
[13] Ho, D. H., Hoang, V. V. & Nguyen, T. B. (2022), Use of a PV/T system to improve photovoltaic efficiency and distilled water productivity, Science and Technology Development Journal - Engineering and Technology, Vol.5(4), pp.1661-1678.
[14] Wiener, J., Khan, M. Z. & Shah, K. (2024), Performance enhancement of the solar still using textiles and polyurethane rollers, Sci. Rep., Vol.14(1), p.5202.
Doi: 10.1038/s41598-024-55948-z.
[15] Jathar, L. et al. (2021), Effect of various factors and diverse approaches to enhance the performance of solar stills: a comprehensive review, J. Therm. Anal. Calorim., Vol.147.
Doi: 10.1007/s10973-021-10826-y.

Các bài báo được đọc nhiều nhất của cùng tác giả