Abstract
The solar pond is one of the usual tools used for solar energy harvesting in the world, although its low efficiency is still a big challenge. In this study, to enhance the thermal efficiency of the laboratory-scale salinity gradient solar pond, three different nanoparticles, i.e., SiO2, Fe3O4, and ZnO, were dispersed into a salt-water solution as the based liquid. Nanoparticles’ mass concentrations used in the based liquid were 0.012%, 0.036%, and 0.06%. The simulated sunlight thermal energy was supplied by a 500 W halogen lamp. The prepared nanofluids were used as lower layer of the pond. Approximately 3 days after filling the pond, the stable salinity gradient was formed and after almost 2 days of exposure to the simulated sunlight, the temperature of the pond layers reached thermal equilibrium. The results showed that lower layer temperature increased continuously with nanoparticles’ concentration, for all nanofluids. Based on the measured temperature, the pond thermal performance was calculated, showing that all mentioned nanoparticles could enhance the thermal efficiency of the SGSP. The maximum lower layer temperature (~ 47 °C) and thermal efficiency enhancement ratio (35.13%) were obtained for the 0.06% ZnO nanofluid. This nanofluid showed the minimum light scattering (particle size parameter = 0.248) and transmittance (near zero) over the UV–Vis wavelength, leading to the increased thermal efficiency of the pond, as compared to the SiO2 and Fe3O4 nanofluids. In addition, using nanoparticles, the time required to reach equilibrium conditions in the pond was decreased, with the maximum of about 9 h.
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References
Abdullah AA, Lindsay KA, AbdelGawad AF (2016) Construction of sustainable heat extraction system and a new scheme of temperature measurement in an experimental solar pond for performance enhancement. Sol Energy 130:10–24. https://doi.org/10.1016/j.solener.2016.02.005
Alcaraz A, Valderrama C, Cortina JL, Akbarzadeh A, Farran A (2016) Enhancing the efficiency of solar pond heat extraction by using both lateral and bottom heat exchangers. Sol Energy 134:82–94. https://doi.org/10.1016/j.solener.2016.04.025
Al-Nimr MdA, Al-Dafaie AMA (2014) Using nanofluids in enhancing the performance of a novel two-layer solar pond. Energy 68:318–326. https://doi.org/10.1016/j.energy.2014.03.023
Assari MR, Basirat Tabrizi H, Kavoosi Nejad A, Parvar M (2015) Experimental investigation of heat absorption of different solar pond shapes covered with glazing plastic. Sol Energy 122:569–578. https://doi.org/10.1016/j.solener.2015.09.013
Banat F, El-Sayed S, El-Temtamy S (1994) Carnalite salt gradient solar ponds: an experimental study. Renew energy 4(2):265–269
Beiki H, Dadvar M, Halladj R (2009) Pore network model for catalytic dehydration of methanol at particle level. AIChE J 55(2):442–449
Beiki H, Esfahany M, Etesami N (2013a) Turbulent mass transfer of Al2O3 and TiO2 electrolyte nanofluids in circular tube. Microfluid Nanofluid 15(4):501–508. https://doi.org/10.1007/s10404-013-1167-z
Beiki H, Nasr Esfahany M, Etesami N (2013b) Laminar forced convective mass transfer of γ-Al2O3/electrolyte nanofluid in a circular tube. Int J Therm Sci 64(0):251–256. https://doi.org/10.1016/j.ijthermalsci.2012.09.004
Bozkurt I, Deniz S, Karakilcik M, Dincer I (2015) Performance assessment of a magnesium chloride saturated solar pond. Renew Energy 78:35–41. https://doi.org/10.1016/j.renene.2014.12.060
Chen W, Zou C, Li X, Li L (2017) Experimental investigation of SiC nanofluids for solar distillation system: stability, optical properties and thermal conductivity with saline water-based fluid. Int J Heat Mass Transf 107:264–270. https://doi.org/10.1016/j.ijheatmasstransfer.2016.11.048
Dehghan AA, Movahedi A, Mazidi M (2013) Experimental investigation of energy and exergy performance of square and circular solar ponds. Sol Energy 97:273–284. https://doi.org/10.1016/j.solener.2013.08.013
Elsarrag E, Igobo ON, Alhorr Y, Davies PA (2016) Solar pond powered liquid desiccant evaporative cooling. Renew Sustain Energy Rev 58:124–140. https://doi.org/10.1016/j.rser.2015.12.053
Fard MM, Beiki H (2017) Experimental measurement of solid solutes solubility in nanofluids. Heat Mass Transfer 53(4):1257–1263. https://doi.org/10.1007/s00231-016-1894-2
Gulzar O, Qayoum A, Gupta R (2018) Photo-thermal characteristics of hybrid nanofluids based on Therminol-55 oil for concentrating solar collectors. Appl Nanosci. https://doi.org/10.1007/s13204-018-0738-4
Hassairi M, Safi M, Chibani S (2001) Natural brine solar pond: an experimental study. Sol Energy 70(1):45–50
Karakilcik M, Kıymac K, Dincer I (2006) Experimental and theoretical temperature distributions in a solar pond. Int J Heat Mass Transf 49(5):825–835
Karunamurthy K, Murugumohankumar K, Suresh S (2012) Use of CuO nano-material for the improvement of thermal conductivity and performance of low temperature energy storage system of solar pond. Digest J Nanomater Biostructures 7(4):1833–1841
Karuppuchamy S, Andou Y, Endo T (2013) Preparation of nanostructured TiO2 photoelectrode for flexible dye-sensitized solar cell applications. Appl Nanosci 3(4):291–293. https://doi.org/10.1007/s13204-012-0140-6
Keramati M, Beiki H (2017) The effect of pH adjustment together with different substrate to inoculum ratios on biogas production from sugar beet wastes in an anaerobic digester. J Energy Manag Technol 1(2):6–11
Keren Y, Rubin H, Atkinson J, Priven M, Bemporad G (1993) Theoretical and experimental comparison of conventional and advanced solar pond performance. Sol Energy 51(4):255–270
Kho T, Hawlader M, Ho J, Wijeysundera N (1991) Design and performance evaluation of a solar pond for industrial process heating. Int J Solar Energy 10(1–2):83–101
Kurt H, Halici F, Binark AK (2000) Solar pond conception—experimental and theoretical studies. Energy Convers Manag 41(9):939–951
Kurt H, Ozkaymak M, Binark AK (2006) Experimental and numerical analysis of sodium-carbonate salt gradient solar-pond performance under simulated solar-radiation. Appl Energy 83(4):324–342
Ladjevardi S, Asnaghi A, Izadkhast P, Kashani A (2013) Applicability of graphite nanofluids in direct solar energy absorption. Sol Energy 94:327–334
Leshuk J, Zaworski R, Styris D, Harling O (1978) Solar pond stability experiments. Sol Energy 21(3):237–244
Li XY, Kanayama K, Baba H (2000) Spectral calculation of the thermal performance of a solar pond and comparison of the results with experiments. Renew Energy 20(4):371–387
Liu H, Jiang L, Wu D, Sun W (2015) Experiment and simulation study of a trapezoidal salt gradient solar pond. Sol Energy 122:1225–1234. https://doi.org/10.1016/j.solener.2015.09.006
Lund P, Keinonen R (1984) Radiation transmission measurements for solar ponds. Sol Energy 33(3):237–240
Mahian O, Kianifar A, Kalogirou SA, Pop I, Wongwises S (2013) A review of the applications of nanofluids in solar energy. Int J Heat Mass Transf 57(2):582–594. https://doi.org/10.1016/j.ijheatmasstransfer.2012.10.037
Manouchehrian Fard M, Beiki H (2016) Experimental investigation of benzoic acid diffusion coefficient in γ-Al2O3 nanofluids at different temperatures. Heat Mass Transfer 52(10):2203–2211. https://doi.org/10.1007/s00231-015-1734-9
Michael JJ, Iniyan S (2015) Performance of copper oxide/water nanofluid in a flat plate solar water heater under natural and forced circulations. Energy Convers Manag 95:160–169. https://doi.org/10.1016/j.enconman.2015.02.017
Milanese M, Colangelo G, Cretì A, Lomascolo M, Iacobazzi F, de Risi A (2016) Optical absorption measurements of oxide nanoparticles for application as nanofluid in direct absorption solar power systems–Part II: ZnO, CeO2, Fe2O3 nanoparticles behavior. Sol Energy Mater Sol Cells 147:321–326
Murthy GR, Pandey K (2003) Comparative performance evaluation of fertiliser solar pond under simulated conditions. Renew Energy 28(3):455–466
Pawar S, Chapgaon A (1995) Fertilizer solar ponds as a clean source of energy: some observations from small scale experiments. Sol Energy 55(6):537–542
Qarony W, Hossain MI, Jovanov V, Knipp D, Tsang YH (2018) Maximizing the short circuit current of organic solar cells by partial decoupling of electrical and optical properties. Appl Nanosci 8(3):339–346. https://doi.org/10.1007/s13204-018-0713-0
Rajaseenivasan T, Murugavel KK, Elango T, Hansen RS (2013) A review of different methods to enhance the productivity of the multi-effect solar still. Renew Sustain Energy Rev 17:248–259. https://doi.org/10.1016/j.rser.2012.09.035
Rashidi S, Esfahani JA, Rashidi A (2017) A review on the applications of porous materials in solar energy systems. Renew Sustain Energy Rev 73:1198–1210. https://doi.org/10.1016/j.rser.2017.02.028
Rativa D, Gómez-Malagón LA (2015) Solar radiation absorption of nanofluids containing metallic nanoellipsoids. Sol Energy 118:419–425. https://doi.org/10.1016/j.solener.2015.05.048
Rose BAJ, Singh H, Verma N, Tassou S, Suresh S, Anantharaman N, Mariotti D, Maguire P (2017) Investigations into nanofluids as direct solar radiation collectors. Sol Energy 147:426–431. https://doi.org/10.1016/j.solener.2017.03.063
Ruskowitz JA, Suárez F, Tyler SW, Childress AE (2014) Evaporation suppression and solar energy collection in a salt-gradient solar pond. Sol Energy 99:36–46
Said Z, Sajid M, Alim M, Saidur R, Rahim N (2013) Experimental investigation of the thermophysical properties of Al2O3-nanofluid and its effect on a flat plate solar collector. Int Commun Heat Mass Transfer 48:99–107
Salata F, Coppi M (2014) A first approach study on the desalination of sea water using heat transformers powered by solar ponds. Appl Energy 136:611–618. https://doi.org/10.1016/j.apenergy.2014.09.079
Shahmohammadi P, Beiki H (2016) A numerical investigation of γ-Al2O3-water nanofluids heat transfer and pressure drop in a shell and tube heat exchanger. Transp Phenom Nano Micro Scales 4(1):29–35
Subhakar D, Murthy SS (1991) Experiments on a magnesium chloride saturated solar pond. Renew Energy 1(5–6):655–660
Subhakar D, Murthy SS (1994) Saturated solar ponds: 3. Experimental verification. Sol Energy 53(6):469–472
Tsilingiris PT (1996) Design and performance of large low-cost solar water heating systems. Renew Energy 9(1):617–621. https://doi.org/10.1016/0960-1481(96)88364-9
Tyagi H, Phelan P, Prasher R (2009) Predicted efficiency of a low-temperature nanofluid-based direct absorption solar collector. J Solar Energy Eng 131(4):041004
Ziapour BM, Shokrnia M, Naseri M (2016) Comparatively study between single-phase and two-phase modes of energy extraction in a salinity-gradient solar pond power plant. Energy 111:126–136. https://doi.org/10.1016/j.energy.2016.05.114
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Beiki, H., Soukhtanlou, E. Improvement of salt gradient solar ponds’ performance using nanoparticles inside the storage layer. Appl Nanosci 9, 243–254 (2019). https://doi.org/10.1007/s13204-018-0906-6
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DOI: https://doi.org/10.1007/s13204-018-0906-6