Performance enhancement of a solar still using magnetic powder as an energy storage medium-exergy and environmental analysis
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Date
Authors
Dhivagar, Ramasamy
Shoeibi, Shahin
Kargarsharifabad, Hadi
Ahmadi, Mohammad Hossein
Sharifpur, Mohsen
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley Open Access
Abstract
The use of different energy storage materials can have a high effect on the water productivity of solar desalination. This study evaluates the impact of magnetic powders on modified solar still (MPSS) performance and compares the results with conventional solar still (CSS). Black iron oxide magnetic powder was selected to increase solar radiation absorption. The black iron magnetic powder simultaneously acts as a thermal storage material and a porous absorber medium. The thermal energy stored in the magnetic powder improved the performance of the MPSS during peak solar irradiation hours, resulting in higher productivity. The results showed that the thermal performance of MPSS was higher than CSS. The MPSS exhibited a 39.8% higher evaporative and 14.5% higher convective heat transfer rate compared with CSS. Results showed that the cumulative water productivity of MPSS was 31.2% greater than CSS. Also, the energy and exergy efficiencies of MPSS were improved by 18.9% and 19.04%, respectively, compared with CSS. Moreover, the predicted payback period in MPSS and CSS were 3.2 and 4.3 months. Additionally, the CO2 reduction of MPSS was improved by approximately 45.53% compared with that of CSS. The results also showed that the exergoeconomic parameter of MPSS and CSS with energy base was equal to 33.1 and 24.56 kWh/$, respectively.
Description
Keywords
Magnetic powders on modified solar still (MPSS), Conventional solar still (CSS), Economic, Energy, Exergy, Magnetic iron oxide, Solar still
Sustainable Development Goals
Citation
Dhivagar, R., Shoeibi, S., Kargarsharifabad, H., Ahmadi, M.H. & Sharifpur, M.
Performance enhancement of a solar still using
magnetic powder as an energy storage medium‐
exergy and environmental analysis. Energy Science and Engineering
2022; 10(8): 3154‐3166. doi:10.1002/ese3.1210.