THERMAL SCIENCE

International Scientific Journal

Zehui Chang

,

Hongfei Zheng

,

Yingjun Yang

,

Tao Tao

,

Xiaodi Xue

A NOVEL IMAGING LIGHT FUNNEL AND ITS COLLECTING HEAT EXPERIMENTS

ABSTRACT
This paper presents a novel imaging light funnel. Its structure and operation principle are introduced, and its ray path is analyzed by computational simulation. The relationship between the light concentrating of the light funnel and the incident angle is investigated. The results show that the changes of focal spot size, shape, energy distribution and center of focal spot are affected by incident angle. In addition to theoretical analysis, several imaging light funnels are constructed, and experiments for single funnel and multiple funnels with series heating system are carried out. Two experiments results and heat collection efficiency of system are obtained. Experiment results show that the heating temperature of this system can reach 335°C and the heat collection efficiency could reach 40%. When the multiple funnels with series heat the water, the temperature can reach 150°C.
KEYWORDS
solar concentrator, ray analysis, multiple funnels with series, collecting heat experiments
PAPER SUBMITTED: 2013-11-14
PAPER REVISED: 2014-05-20
PAPER ACCEPTED: 2014-05-20
PUBLISHED ONLINE: 2014-06-15
DOI REFERENCE: https://doi.org/10.2298/TSCI131114061C
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE Issue 2, PAGES [707 - 716]
REFERENCES
  1. Welford, W.T., Winston, R., High Collection Nonimaging Optics, Academic Press, New York, USA, 1989
  2. Li X, Dai Y. J., Li Y., et al, Performance investigation on a novel single-pass evacuated tube with a symmetrical compound parabolic concentrator, Solar Energy, 98(2013), C, 275-289.
  3. Harmim, A., et al, Performance study of a box-type solar cooker employing an asymmetric compound parabolic concentrator, Energy, 47(2012), 1, pp. 471-480.
  4. Kara, A. Shell, et al, Effect of misalignment on the performance of a compound parabolic concentrator, Journal of Photonics for Energy, 2(2012), 4, pp. 0218021-8.
  5. Santos, G., et al. Development and experimental investigation of a compound parabolic concentrator, International Journal of Energy Research, 36(2012), 12, pp. 1151-1160
  6. Velimir P., MiloradLj., Development and investigation of solar collectors for conversion of solar radiation into heat and/or electricity, Thermal Science, 10(2006), 4, pp. 177-187
  7. Men, Wirz, M.R., Aldo S. Three-Dimensional optical and thermal numerical model of solar tubular receivers in parabolic trough concentrators,Journal of Solar Energy Engineering, 134(2012), 4, pp. 041012-1-9
  8. Sharaf E, A new design for an economical, highly efficient, conical solar cooker, Renewable Energy, 27(2002), 4, pp. 599-619
  9. Saffa R., Abdulkarim M., Performance evaluation of v-trough solar concentrator for water desalination applications,Applied Thermal Engineering, 50(2013), 1, pp. 234-244
  10. Togrul I.T., et al,Development and testing of a solar air-heater with conical concentrator, Renewable Energy, 29(2004), 2, pp. 263-275
  11. Nazmi, S., Tapas K. M., Optical efficiency study of PV crossed compound parabolic concentrator,Applied Energy, 102(2013), SI, pp. 868-876
  12. Inci T. T., Dursun P., Effect of packing in the airflow passage on the performance of a solar air-heater with conical concentrator,Applied Thermal Engineering, 25(2005), 8-9, pp. 1349-1362
  13. Omer S.A., Infield D.G., Design and thermal analysis of a two stage solar concentrator for combined heat and thermoelectric power generation,Energy Conversion and Management,41(2000), 7, pp. 737-756.
  14. He K. Y., et al. An imaging compounding parabolic concentrator,Proceedings of ISES Solar World Congress 2007, Solar Energy and Human Settlement, Beijing, 2007, Vol. 2, pp. 589-592
  15. He K.Y., et al. Experimental investigation of high temperature congregating energy solar stove with sun light funnel, Energy Conversion and Management,50(2009), 12, pp. 3051-3055
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A novel imaging light funnel and its collecting heat experiments

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence