Solar Still Efficiency Enhancement by Using Graphene Oxide/Paraffin Nano-PCM

• DOI: 10.3390/en12102002
• Publication Date: 2019-05-27T03:07:27Z
• Authors: Mohammad Reza Safaei; Hamid Reza Goshay...; Issa Chaer
• Keywords: Solar still; Subcooling; Phase-change material

Solar-driven water desalination technologies are rapidly developing with various links to other renewable sources. However, the efficiency of such systems severely depends on design parameters. The present study focused using graphene oxide (GO) Φ = 0.2, 0.4 and 0.6 wt.% dispersed in paraffin, as phase-change materials (PCMs), improve productivity a solar still for applications. outcomes showed that by adding more melting temperature got reduced. Solar GO/paraffin 25% improvement comparison only PCM. obtained Nusselt number during time also represented free convection heat transfer into melted region has been enhanced GO PCM, compared base paraffin. Also, increasing hot wall augments number. Finally, an empirical equation was derived correlate average function Rayleigh (Ra), Stefan (Ste), subcooling factor (Sb), Fourier (Fo). correlation depicted enhancement reverse relation