Experimental investigation of double slope solar still integrated with PCM nanoadditives microencapsulated thermal energy storage

Owolabi Afolabi, Lukmon and Enweremadu c, Christopher Chintua and Kareem, M.W. and Arogundade, Adiat and Irshad, Kashif and Islam, Saiful and Oladosu, K.O. and M. Elfaghi, Abdulhafid and Didane, Djamal Hissein (2023) Experimental investigation of double slope solar still integrated with PCM nanoadditives microencapsulated thermal energy storage. Desalination, 553 (1). pp. 1-13. ISSN 116477

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Abstract

Transparent covered slope solar stills are trending but characterised with low productivity, heat losses and high energy consumption, which are setbacks in practice. In this study, double slope solar still (DSSS) integrated with PCM-TES is presented. PCM was microencapsulated with epoxy resin composite using vacuum mould-filled techniques. Conventional DSSS and DSSS-TES data collected have been compared to establish the influence of TES on productivity. Daily average temperature of the glass cover, humid air, saline water, still basin absorber and TES cavity for the DSSS-TES attained are 65.2 ◦C, 77.5 ◦C, 82.4 ◦C, 79.5 ◦C and 68.4 ◦C, respectively. DSSSTES has yielded higher production, with 7.5 Litres of potable water daily and extension in operation period by 3 h has been achieved. In addition, condensation and evaporation rates increased with increase in production by 105%. Integration of TES with the system has reduced the heat losses while leakages from PCM nanocomposite have been prevented by microencapsulated insulator. No trace of metals, bacteria and organic contaminants has been found in desalinated water. A payback period of 0.8 year has been recorded based on all-year-round operations. Findings are in good agreement with existing models. Moreover, sensorial characteristics obtained conform to WHO standards.

Item Type:	Article
Uncontrolled Keywords:	Solar still Thermal energy storage Double slope absorber Phase change materials Saline water Epoxy material
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA170-171 Environmental engineering
Divisions:	Faculty of Mechanical and Manufacturing Engineering
Depositing User:	Mr. Mohamad Zulkhibri Rahmad
Date Deposited:	14 Jun 2023 00:36
Last Modified:	14 Jun 2023 00:36
URI:	http://eprints.uthm.edu.my/id/eprint/8804

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