Optical Characterization of TiO₂-bound (CuFeMnO₄) Absorber Paint for Solar Thermal Applications

C. O. Ayieko^1, , R. J. Musembi¹, A. A. Ogacho¹, B. O. Aduda¹, B. M. Muthoka¹ and P. K. Jain²

¹Department of Physics, University of Nairobi, P.O. Box 00100-30197, Nairobi, Kenya

²Department of Physics, University of Botswana, Private Bag 0022, Gaborone, Botswana

Cite this paper:
C. O. Ayieko, R. J. Musembi, A. A. Ogacho, B. O. Aduda, B. M. Muthoka and P. K. Jain. Optical Characterization of TiO₂-bound (CuFeMnO₄) Absorber Paint for Solar Thermal Applications. American Journal of Energy Research. 2016; 4(1):11-15. doi: 10.12691/ajer-4-1-2

Abstract

A composite thin film consisting of TiO₂ (binder), uniformly mixed CuFeMnO₄ paint (solar absorber) was coated on textured aluminum sheets by dip coating. The film’s elemental analysis was done using energy dispersive x-ray (EDX) and the surface of the film characterized using scanning electron microscope (SEM). Optical properties of the TiO₂/CuFeMnO₄ composite film were also studied using computerized double beam solid-spec 3700 DUV Shimadzu Spectrophotometer. Reflectance was obtained by spectrophotometric measurements, and thermal emmittance was determined using heat flux- based technique respectively. Reflectance measurement values less than 0.03 in the solar wavelength (290 nm < λ < 2500 nm) and low thermal emmittance less than 0.016 for temperatures between 24°C and 100°C were obtained.

Keywords:
CuFeMnO₄ paint TiO₂- bound reflectance thermal emmittance solar thermal

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References:

[1]	Kaluža, L., A. Šurca-Vuk, B. Orel, G. Dražič, P. Pelicon (2001). Structural and IR spectroscopic analysis of sol-gel processed CuFeMnO4/silica films for solar absorbers, J. Sol-Gel Science & Technology, 20, 61-63.
[2]	Tai, K.L., H. K. Dong, P.A. Chungmoo(1995). Preparation of new black chrome solar selective coatings. Korean journal of chemical Engineering, 2 (12) 207-212.
[3]	Ayieko, C. O., R. J. Musembi, S. M. Waita, B. O. Aduda, P. K. Jain (2012). Structural and optical characterization of nitrogen-doped TiO2 thin films deposited by spray pyrolysis on fluorine doped tin oxide (FTO) coated glass slides, International Journal of Energy Engineering, 2(3), 67-72.
[4]	Young S. J., K.H. Kim, H. Wook Choi (2010). Properties of TiO2 films prepared for use in Dye-sensitized solar cells by using solgel method at different catalyst concentrations, Journal of the Korean physical society, 57( 4) 1049-1053.
[5]	Saeed, M., J. Lawler, C. McCaffery, J. Kim “Heat Flux-Based Emissivity Measurement” in proceedings of Space Technology and Applications International Forum (STAIF-2005), edited by M. El-Genk, AIP Conference Proceedings 746,Melville, New York, 2005, 32-37.
[6]	Demiryont, H., and Shannon, K.C. III, “Variable Emittance Electrochromic Devices for Satellite Thermal Control in proceedings of Space Technology and Applications International Forum (STAIF-2007), edited by M. El-Genk, AIP Conference Proceedings 978, American Institute of Physics Press, Melville,2007, New York, 51-58.
[7]	Sudipto, P., D. Diso, S. Franza, A. Licciulli, L. Rizzo (2013). Spectrally selective absorber coating from transition metal complex for efficient photo-thermal conversion. Journal of material science, 48, 8268-8276.
[8]	Jaworske, D.A., and Skowronski, T.J., “Portable Infrared Reflectometer for Evaluating Emittance,” in proceedings of Space Technology and Applications International Forum (STAIF-2000), edited by M. El-Genk, AIP Conference Proceedings 504, American Institute of Physics Press, New York, 2000, 791-796.