Effects of nanoparticle-enhanced phase change material (NPCM) on solar still productivity

Dsilva Winfred Rufuss, D., Suganthi, L., Iniyan, S. and Davies, P.a. (2018). Effects of nanoparticle-enhanced phase change material (NPCM) on solar still productivity. Journal of Cleaner Production, 192 , pp. 9-29.


This paper investigates the effects of nanoparticle-enhanced phase change material (NPCM) on solar still operation and performance. Technical and economic aspects were considered, to show an advance on earlier works using virgin phase-change materials (PCM). Three types of nanoparticle (TiO2, CuO and GO) were impregnated individually at 0.3 weight% in paraffin to form NPCM-1, NPCM-2 and NPCM-3 respectively. Experiments were conducted with four solar stills (SS) each of 0.5 m2 area using respectively paraffin (SSPCM), paraffin-TiO2 (SSNPCM-1), paraffin-CuO (SSNPCM-2) and paraffin-GO (SSNPCM-3). There was observed an increase in thermal conductivity and a reduction in melting and solidification temperatures, with NPCM compared to PCM. The effects of NPCM on water temperature, storage temperature, hourly and annual productivity were determined. SSPCM, SSNPCM-1, SSNPCM-2 and SSNPCM-3 yielded 3.92, 4.94, 5.28 and 3.66 l/m2/day respectively, corresponding to 26 and 35% increases in productivity of SSNPCM-1 and 2 respectively over SSPCM. Economic analysis showed cost per liter (CPL) of water of $0.035, $0.028, $0.026 and $0.13 for SSPCM, SSNPCM-1, 2 and 3 respectively. Considering the advantages in productivity and CPL, SSNPCM-2 can be recommended as the best solar still compared to SSPCM, SSNPCM-1 and 3, providing clean water at less than half the cost of bottled water in India.

Publication DOI: https://doi.org/10.1016/j.jclepro.2018.04.201
Divisions: Engineering & Applied Sciences > Mechanical engineering & design
Engineering & Applied Sciences > Sustainable environment research group
Engineering & Applied Sciences > Polymer and advanced materials research group
Additional Information: © 2018, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Funding:DST and the British Council under the UKIERI Thematic Partnership (DST/INT/UK/P-86/2014). Maulana Azad National Fellowship (MANF) program by the Ministry of Minority Affairs, University Grants Commission (UGC) New Delhi, Proceeding No. MANF-2015-17-TAM-48968.
Uncontrolled Keywords: desalination,phase change material,nanoparticles,paraffin,productivity,echno-economic analysis
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Related URLs: https://www.sci ... 95965261831237X (Publisher URL)
Published Online Date: 2018-08-10
Published Date: 2018-08-10
Authors: Dsilva Winfred Rufuss, D.
Suganthi, L.
Iniyan, S.
Davies, P.a. ( 0000-0003-4783-1234)


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