Energetic and exergetic performance of PCM incorporated ETC integrated solar still under forced mode
Keywords:
Active solar still, Phase change material, Energy, Exergy, IrreversibilityAbstract
The incorporation of phase change material (PCM) enhances the productivity of the solar still as well as makes it continuously operative during low sunshine/night time. This study analyzes the performance of single slope solar still incorporated with paraffin wax as a PCM beneath the basin liner and further integrated with an evacuated tube collector under forced convection. The results have revealed that under similar climatic conditions, PCM-incorporated solar still improves the productivity by 30% compared to the system without PCM, yielding 5.064 kg/day using 15 kg PCM at 0.03 m water depth and flow rate of 0.06 kg/s. The overall energetic and exergetic efficiencies have been found to be 39.56% and 4.05%. Irreversibility has been seen as a function of the intensity of available radiations during the daytime and is crucial at basin liner and, minimum at PCM. Moreover, at night, basin water has the highest irreversibility of ~78% (~30.0 W/m2), while PCM is at a minimum of ~2.0 W/m2. The effect of wind velocity has revealed an increase in energy efficiency by ~3%, reaching a maximum of 44.03% at an optimal speed of 3.0 m/s, while exergy efficiency decreased by ~11%. The increase in PCM and basin water mass has reduced the performance, reaching a maximum of 15 kg paraffin wax for a given water depth.
References
UNESCO Report, 2023. www.unesco.org/en/articles/imminent-risk-global-water-crisis-warns-un-world-water-development-report-2023.
[2] A.E. Mazraeh, M. Babayan, M. Yari, Ali M. Sefidan, S.C. Saha, Theoretical study on the performance of a solar still system integrated with PCM-PV module for sustainable water and power generation, Desalination 443 (2018) 184–197.
[3] International Desalination Association water security handbook and Global Water Intelligence, 2019 available from, https://idadesal.org.
[4] V.S. Vigneswaran , P. Ganesh Kumar, D. Sakthivadivel, K. Balaji, M. Meikandan, B.V. Dinakar, K. Karthick Kamal, G. Kumaresan. Energy, Exergy, and Economic analysis of low thermal conductivity basin solar still integrated with Phase Change Material for energy storage, Journal of Energy Storage 34 (2021) 102194.
[5] H.E.S. Fath, Technical assessment of solar thermal energy storage technologies, Renewable Energy 14 (1998) 35–40.
[6] H.N. Panchal, Use of thermal energy storage materials for enhancement in distillate output of solar still: A review, Renewable and Sustainable Energy Reviews 61 (2016) 86–96.
[7] H.S. Deshmukh, S.B. Thombre, Solar distillation with single basin solar still using sensible heat storage materials, Desalination 410 (2017) 91–98.
[8] A. Dubey, A. Arora, Effect of various energy storage phase change materials (PCMs) and nano-enhanced PCMs on the performance of solar stills: A review, Journal of Energy Storage 97 (2024) 112938.
[9] A.E. Kabeel, M. Abdelgaied, Improving the performance of solar still by using PCM as a thermal storage medium under Egyptian conditions, Desalination 383 (2016) 22–28.
[10] M. Abu-Arabi, M. Al-harahsheh, M. Ahmad, H. Mousa, Theoretical modeling of a glass-cooled solar still incorporating PCM and coupled to flat plate solar collector, Journal of Energy Storage 29 (2020) 101372.
[11] J.C. Torchia-Nunez, M.A. Porta-Gandara, J.G. Cervantes-de Gortari, Exergy analysis of a passive solar still, Renewable Energy 33 (2008) 608-616.
[12] S. Kumar, G.N. Tiwari, Analytical expression for instantaneous exergy efficiency of a shallow basin passive solar still, International Journal of Thermal Sciences 50 (2011) 2543-2549.
[13] M. Asbik, O. Ansari, A. Bah, N. Zari, A. Mimet, H. El-Ghetany, Exergy analysis of solar desalination still combined with heat storage system using phase change material (PCM), Desalination 381 (2016) 26–37.
[14] R.V. Singh, S. Kumar, M.M. Hasan, M.E. Khan, G.N. Tiwari, Performance of a solar still integrated with evacuated tube collector in natural mode, Desalination 318 (2013) 25–33.
[15] J. Glembin, G. Rockendorf, J. Scheuren, Internal thermal coupling in direct-flow coaxial vacuum tube collectors, Solar Energy 84 (2010) 1137–1146.
[16] R. Dev, H.N. Singh, G.N. Tiwari, Annual performance of evacuated tubular collector integrated solar still, Desalination and Water Treatment 41 (2012) 204–223.
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