Technical Brief

Use of Silicone Oil and Coconut Oil as Liquid Spectrum Filters for BSPVT: With Emphasis on Degradation of Liquids by Sunlight

[+] Author and Article Information
Sandeep S. Joshi

Department of Mechanical Engineering,
Visvesvaraya National Institute of Technology,
Nagpur, Maharashtra 440010, India
e-mail: sandeepshrijoshi@gmail.com

Ashwinkumar S. Dhoble

Department of Mechanical Engineering,
Visvesvaraya National Institute of Technology,
Nagpur, Maharashtra 440010, India
e-mail: ashwindhoble@rediffmail.com

Manuscript received June 16, 2017; final manuscript received September 2, 2017; published online October 17, 2017. Assoc. Editor: Gerardo Diaz.

J. Sol. Energy Eng 140(1), 014502 (Oct 17, 2017) (9 pages) Paper No: SOL-17-1236; doi: 10.1115/1.4038052 History: Received June 16, 2017; Revised September 02, 2017

The solar photovoltaic thermal system (PVT) facilitates conversion of incoming solar radiations into heat and electricity simultaneously. The beam split photovoltaic thermal system (BSPVT) is one of the PVT systems. In this system, the incoming solar beam is splitted and used separately for PV and thermal system. The feasibility of water, silicone oil, and coconut oil as spectrum filter for C–Si solar photovoltaic system is reported in the literature recently. However, the changes in the optical behavior of the liquids due to extended exposure to sunlight (aging effect) had not been considered in most of the previous studies. The current study includes the methodology for the selection of liquids for BSPVT systems, estimation of external quantum efficiency (EQE) of a solar cell using liquids, and the aging effect on the liquid spectrum filters. The spectral response of the solar cell is analyzed using BENTHAM, (PVE 300) for 300–1100 nm. In this study, it has been observed that the aging of silicone oil reduces the electrical performance of the solar cell. On the other hand, the aged coconut oil improves the electrical performance of the solar cell as compared to the fresh coconut oil spectrum filter.

Copyright © 2018 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.


Sukhatme, S. P. , and Nayak, J. K. , 1996, Solar Energy Principles of Thermal Collection and Storage, 3rd ed., Tata McGraw-Hill Education, New Delhi, India.
Solanki, C. S. , 2013, Solar Photovoltaics Fundamentals, Technologies and Applications, 2nd ed., PHI Learning, New Delhi, India.
Joshi, S. S. , Dhoble, A. S. , and Jiwanapurkar, P. , 2016, “ Investigations of Different Liquid Based Spectrum Beam Splitters for Combined Solar Photovoltaic Thermal Systems,” ASME J. Sol. Energy Eng., 138(2), p. 021003. [CrossRef]
Jackson, E. D. , 1955, “ Areas for Improvement of the Semiconductor Solar Energy Converter,” Transactions of the Conference on the Use of Solar Energy, University of Arizona Press, Tucson, AZ.
Kaluza, J. , Funken, K. H. , Groer, U. , Neumann, A. , and Riffelmann, K. J. , 1999, “ Properties of an Optical Fluid Filter: Theoretical Evaluations and Measurement Results,” J. Phys. IV, 9, pp. 655–660.
Otanicar, T. P. , Phelan, P. E. , and Golden, J. S. , 2009, “ Optical Properties of Liquids for Direct Absorption Solar Thermal Energy Systems,” Sol. Energy, 83(7), pp. 969–977. [CrossRef]
Taylor, R. A. , Otanicar, T. P. , Herukerrupu, Y. , Bremond, F. , Rosengarten, G. , Hawkes, E. R. , Jiang, X. , and Coulombe, S. , 2013, “ Feasibility of Nanofluid-Based Optical Filters,” Appl. Opt., 52(7), pp. 1413–1422. [CrossRef] [PubMed]
Rosa-clot, M. , Rosa-clot, P. , and Tina, G. M. , 2011, “ TESPI: Thermal Electric Solar Panel Integration,” Sol. Energy, 85(10), pp. 2433–2442. [CrossRef]
Joshi, S. S. , and Dhoble, A. S. , 2017, “ Experimental Investigation of Solar Photovoltaic Thermal System Using Water, Coconut Oil and Silicone Oil as Spectrum Filters,” J. Braz. Soc. Mech. Sci. Eng., 39(8), pp. 3227–3236. [CrossRef]
Huang, H. , Li, Y. , Wang, M. , Nie, W. , Zhou, W. , and Peterson, E. D. , 2011, “ Photovoltaic—Thermal Solar Energy Collectors Based on Optical Tubes,” Sol. Energy, 85(3), pp. 450–454. [CrossRef]
Kameya, Y. , and Hanamura, K. , 2011, “ Enhancement of Solar Radiation Absorption Using Nanoparticle Suspension,” Sol. Energy, 85(2), pp. 299–307. [CrossRef]
Phelan, P. , Otanicar, T. , Taylor, R. , and Tyagi, H. , 2013, “ Trends and Opportunities in Direct-Absorption Solar Thermal Collectors,” ASME J. Therm. Sci. Eng. Appl., 5(2), p. 021003. [CrossRef]
Taylor, R. A. , Otanicar, T. , and Rosengarten, G. , 2012, “ Nanofluid-Based Optical Filter Optimization for PV/T Systems,” Light: Sci. Appl., 1, p. e34. [CrossRef]
Mittal, T. , Saroha, S. , Bhalla, V. , Khullar, V. , Tyagi, H. , Taylor, R. A. , and Otanicar, T. P. , 2013, “ Numerical Study of Solar Photovoltaic/Thermal (PV/T) Hybrid Collector Using Nanofluids,” ASME Paper No. MNHMT2013-22090.
Crisostomo, F. , Hjerrild, N. , Mesgari, S. , Li, Q. , and Taylor, R. A. , 2017, “ A Hybrid PV/T Collector Using Spectrally Selective Absorbing Nanofluids Angle of Incidence Levelized Cost of Electricity,” Appl. Energy, 193, pp. 1–14. [CrossRef]
Stanley, C. , Mojiri, A. , Karwa, N. , and Rosengarten, G. , 2014, “ Computational Heat Transfer Modeling of a Beam Splitting Hybrid PVT Collector,” 52nd Annual Conference, Australian Solar Energy Society (Australian Solar Council), Melbourne, Australia, May 8–9, pp. 1–10.
Al-shohani, W. A. M. , Sabouri, A. , Al-dadah, R. , Mahmoud, S. , and Butt, H. , 2016, “ Experimental Investigation of an Optical Water Filter for Photovoltaic/Thermal Conversion Module,” Energy Convers. Manage., 111, pp. 431–442. [CrossRef]
Looser, R. , Vivar, M. , and Everett, V. , 2014, “ Spectral Characterisation and Long-Term Performance Analysis of Various Commercial Heat Transfer Fluids (HTF) as Direct-Absorption Filters for CPV-T Beam-Splitting Applications,” Appl. Energy, 113, pp. 1496–1511. [CrossRef]


Grahic Jump Location
Fig. 1

Concept of BSPVT system [3]

Grahic Jump Location
Fig. 2

Methodology for selection of liquid for BSPVT systems

Grahic Jump Location
Fig. 3

Fresh and aged liquid samples

Grahic Jump Location
Fig. 4

Absorption spectrum of water

Grahic Jump Location
Fig. 5

Absorption spectrum of fresh and aged silicone oil

Grahic Jump Location
Fig. 6

Absorption spectrum of fresh and aged coconut oil

Grahic Jump Location
Fig. 7

Determination of spectral absorption by the liquids

Grahic Jump Location
Fig. 8

EQE measurement system

Grahic Jump Location
Fig. 9

EQE of the solar cell without any spectrum filter, empty spectrum filter, and silicone oil spectrum filters

Grahic Jump Location
Fig. 10

EQE of the solar cell without any spectrum filter, empty spectrum filter, and water spectrum filter

Grahic Jump Location
Fig. 11

EQE of the solar cell without any spectrum filter, empty spectrum filter, and coconut oil spectrum filters

Grahic Jump Location
Fig. 12

PVT system with liquid spectrum filters



Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In