Effect of light scattering on the performance of a direct absorption solar collector

Abstract

Recently, a solar thermal collector often employs nanoparticle suspension to absorb the solar radiation directly by a working fluid as well as to enhance its thermal performance. The collector efficiency of a direct absorption solar collector (DASC) is very sensitive to optical properties of the working fluid, such as absorption and scattering coefficients. Most of the existing studies have neglected particle scattering by assuming that the size of nanoparticle suspension is much smaller than the wavelength of solar radiation (i.e., Rayleigh scattering is applicable). If the nanoparticle suspension is made of metal, however, the scattering cross-section of metallic nanoparticles could be comparable to their absorption cross-section depending on the particle size, especially when the localized surface plasmon (LSP) is excited. Therefore, for the DASC utilizing a plasmonic nanofluid supporting the LSP, light scattering from metallic particle suspension must be taken into account in the thermal analysis. The present study investigates the scattering effect on the thermal performance of the DASC employing plasmonic nanofluid as a working fluid. In the analysis, the Monte Carlo method is employed to numerically solve the radiative transfer equation considering the volume scattering inside the nanofluid. It is found that the light scattering can improve the collector performance if the scattering coefficient of nanofluid is carefully engineered depending on its value of the absorption coefficient.

Key words： direct absorption solar collector; plasmonic nanofluid; light scattering

Acknowledgements

This work was supported by Basic Science Research Program (NRF-2015R1A2A1A10055060) and Pioneer Research Center Program (NRF-2013M3C1A3063046) through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and future Planning.

References

1 Steinfeld A. Solar thermochemical production of hydrogen–a review. Solar Energy, 78(5), 2005, 78(5): 603–615

2 Thirugnanasambandam M, Iniyan S, Goic R. A review of solar thermal technologies. Renewable & Sustainable Energy Reviews, 2010, 14(1): 312–322

3 Parida B, Iniyan S, Goic R. A review of solar photovoltaic technologies. Renewable & Sustainable Energy Reviews, 2011, 15(3): 1625–1636

4 Zhang H L, Baeyens J, Degrève J, Cacères G. Concentrated solar power plants: review and design methodology. Renewable & Sustainable Energy Reviews, 2013, 22: 466–481

5 Lenel U, Mudd P. A review of materials for solar heating systems for domestic hot water. Solar Energy, 1984, 32(1): 109–120

6 Fisch M, Guigas M, Dalenbäck J. A review of large-scale solar heating systems in Europe. Solar Energy, 1998, 63(6): 355–366

7 Tian Y, Zhao C Y. A review of solar collectors and thermal energy storage in solar thermal applications. Applied Energy, 2013, 104(4): 538–553

8 Duffie J A, Beckman W A, Mcgowan J. Solar engineering of thermal processes. Journal of Solar Energy Engineering,  1994,  116(1): 549

9 Hewakuruppu Y L, Taylor R A, Tyagi H, Khullar V, Otanicar T, Coulombe S, Hordy N. Limits of selectivity of direct volumetric solar absorption. Solar Energy, 2015, 114: 206–216

10 Minardi J E, Chuang H N. Performance of a “black” liquid flat-plate solar collector. Solar Energy, 1975, 17(3): 179–183

11 Ito A, Shinkai M, Honda H, Kobayashi T. Medical application of functionalized magnetic nanoparticles. Journal of Bioscience and Bioengineering, 2005, 100(1): 1–11

PMID

12 Medintz I L, Uyeda H T, Goldman E R, Mattoussi H. Quantum dot bioconjugates for imaging, labelling and sensing. Nature Materials, 2005, 4(6): 435–446

PMID

13 Yu W, France D M, Routbort J L, Choi S U. Review and comparison of nanofluid thermal conductivity and heat transfer enhancements. Heat Transfer Engineering, 2008, 29(5): 432–460

14 Taylor R A, Phelan P E, Otanicar T P, Adrian R, Prasher R. Nanofluid optical property characterization: towards efficient direct absorption solar collectors. Nanoscale Research Letters, 2011, 6(1): 225

PMID

15 Bohren C F, Huffman D R. Absorption and scattering of light by small particles (Wiley, New York). Optics & Laser Technology,  1998,  31(1): 328–328

16 Otanicar T P, Phelan P E, Prasher R S, Rosengarten G, Taylor R A. Nanofluid-based direct absorption solar collector. Journal of Renewable and Sustainable Energy, 2010, 2(3): 033102

17 Xuan Y, Duan H, Li Q. Enhancement of solar energy absorption using a plasmonicnanofluid based on TiO₂/Ag composite nanoparticles. RSC Advances, 2014, 4(31): 16206–16213

18 Chen M, He Y, Zhu J, Shuai Y, Jiang B, Huang Y. An experimental investigation on sunlight absorption characteristics of silver nanofluids. Solar Energy, 2015, 115(12): 85–94

19 Gupta H K, Agrawal G D, Mathur J. An experimental investigation of a low temperature Al₂O₃-H₂O nanofluid based direct absorption solar collector. Solar Energy, 2015, 118: 390–396

20 Karami M, Akhavan-Bahabadi M, Delfani S, Raisee M. Experimental investigation of CuO nanofluid-based Direct Absorption Solar Collector for residential applications. Renewable & Sustainable Energy Reviews, 2015, 52: 793–801

21 Jeon J, Park S, Lee B J. Analysis on the performance of a flat-plate volumetric solar collector using blended plasmonic nanofluid. Solar Energy, 2016, 132: 247–256

22 Tyagi H, Phelan P, Prasher R. Predicted efficiency of a low-temperature nanofluid-based direct absorption solar collector. Journal of Solar Energy Engineering, 2009, 131(4): 041004

23 Veeraragavan A, Lenert A, Yilbas B, Al-Dini S, Wang E N. Analytical model for the design of volumetric solar flow receivers. International Journal of Heat and Mass Transfer, 2012, 55(4): 556–564

24 Cregan V, Myers T G. Modelling the efficiency of a nanofluid direct absorption solar collector. International Journal of Heat and Mass Transfer, 2015, 90: 505–514

25 Gorji T B, Ranjbar A A. Geometry optimization of a nanofluid-based direct absorption solar collector using response surface methodology. Solar Energy, 2015, 122: 314–325

26 Liu B J, Lin K Q, Hu S, Wang X, Lei Z C, Lin H X, Ren B. Extraction of absorption and scattering contribution of metallic nanoparticles toward rational synthesis and application. Analytical Chemistry, 2015, 87(2): 1058–1065

PMID

27 Jain P K, Lee K S, El-Sayed I H, El-Sayed M A. Calculated absorption and scattering properties of gold nanoparticles of different size, shape, and composition: applications in biological imaging and biomedicine. Journal of Physical Chemistry B, 2006, 110(14): 7238–7248

PMID

28 Rativa D, Gómez-Malagón L A. Solar radiation absorption of nanofluids containing metallic nanoellipsoids. Solar Energy, 2015, 118: 419–425

29 Wu Y, Zhou L, Du X, Yang Y. Optical and thermal radiative properties of plasmonic nanofluids containing core–shell composite nanoparticles for efficient photothermal conversion. International Journal of Heat and Mass Transfer, 2015, 82: 545–554

30 Lee B J, Park K, Walsh T, Xu L. Radiative heat transfer analysis in plasmonic nanofluids for direct solar thermal absorption. Journal of Solar Energy Engineering, 2012, 134(2): 021009

31 Kalogirou S A. Solar thermal collectors and applications. Progress in Energy and Combustion Science, 2004, 30(3): 231–295

32 Howell J R. The Monte Carlo method in radiative heat transfer. Journal of Heat Transfer, 1998, 120(3): 547–560

33 Weller H G, Tabor G, Jasak H, Fureby C. A tensorial approach to computational continuum mechanics using object-oriented techniques. Computers in Physics, 1998, 12(6): 620–631

34 Qin C, Kang K, Lee I, Lee B J. Optimization of a direct absorption solar collector with blended plasmonic nanofluids. Solar Energy, 2017, 150: 512–520

35 Das S K, Choi S U, Yu W, Pradeep T. Nanofluids: Science and Technology. Hoboken: John Wiley & Sons, 2007