THERMAL SCIENCE

International Scientific Journal

Omid Karimi Sadaghiyani

,

Seyed Mehdi Pesteei

,

Iraj Mirzaee

THE EFFECT AND CONTRIBUTION OF WIND GENERATED ROTATION ON OUTLET TEMPERATURE AND HEAT GAIN OF LS-2 PARABOLIC TROUGH SOLAR COLLECTOR

ABSTRACT
The Monte Carlo ray tracing method is applied and coupled with finite volume numerical methods to study effect of rotation on outlet temperature and heat gain of LS-2 parabolic trough concentrator (PTC). Based on effect of sunshape, curve of mirror and use of MCRT, heat flux distribution around of inner wall of evacuated tube is calculated. After calculation of heat flux, the geometry of LS-2 Luz collector is created and finite volume method is applied to simulate. The obtained results are compared with Dudley et al test results for irrotational cases to validate these numerical solving models. Consider that, for rotational models ,the solving method separately with K.S. Ball's results. In this work, according to the structure of mentioned collector, we use plug as a flow restriction. In the rotational case studies, the inner wall rotates with different angular speeds. We compare results of rotational collector with irrotational. Also for these two main states, the location of plug changed then outlet temperature and heat gain of collector are studied. The results show that rotation have positive role on heat transfer processing and the rotational plug in bottom half of tube have better effectual than upper half of tube. Also the contribution of rotation is calculated in the all of case studies. Working fluid of these study is one of the oil derivatives namely Syltherm-800. The power of wind can be used to rotate tube of collector.
KEYWORDS
parabolic trough collector, ls2 collector, contribution of rotation, outlet temperature
PAPER SUBMITTED: 2011-06-13
PAPER REVISED: 2011-06-27
PAPER ACCEPTED: 2011-09-02
DOI REFERENCE: https://doi.org/10.2298/TSCI110613123S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2013, VOLUME 17, ISSUE Issue 2, PAGES [377 - 386]
REFERENCES
  1. S.M. Jeter, "Calculation of the concentrated flux distribution in parabolic trough collectors by a semifinite formulation", Solar Energy,.37 (1986), pp.335-345.
  2. S.M. Jeter, "Analytical determination of the optical performance of parabolic trough collectors from design data", Solar Energy,.39 (1987), pp.11-21
  3. V. Dudley, G. Kolb, M. Sloan, D. Kearney, SEGS LS2 solar collector — test results, Report of Sandia National Laboratories, SANDIA94-1884, USA, (1994).
  4. V. Heinzel, H. Kungle, M. Simon, Simulation of a Parabolic Trough Collector, ISESSolar World Congress, Harare, Zimbabwe, (1995) pp. 1-10.
  5. N. Naeeni, M. Yaghoubi, Analysis of wind flow around a parabolic collector (1) fluid flow, Renewable Energy 32 (2007) pp.1898-1916.
  6. N. Naeeni, M. Yaghoubi, Analysis of wind flow around a parabolic collector (2) heat transfer from receiver tube, Renewable Energy 32 (2007) pp. 1259-1272.
  7. Dudley VE,Workhoven RM. Performance testing of the Solar Kinetics T-700A Solar Collector. Tech. Rep. No.SAND81-0984. Albuquerque: SANDIA; (1982).
  8. R. Forristall, Heat Transfer Analysis and Modeling of a Parabolic Trough Solar Receiver Implemented in Engineering Equation Solver, Technical Report, NREL/ TP-550-34169, October, (2003).
  9. J. Xiao, Y.L. He, Y.B. Tao, R.J. Xu, Simulation for Concentrating Characteristics of Parabolic Solar Collector Part A: Analysis of Concentrating Characteristics, 14thAnnual Symposium of Chinese Society of Engineering Thermophysics, Tianjin, China, (2008).
  10. S.D. Odeh, G.L. Morrison, M. Behnia, Thermal analysis of parabolic trough solar collector for power generation, In Proceedings of ANZSES 34th Annual Conference, Darwin, Australia, (1996) pp. 460-467.
  11. Y. Shuai, X.L. Xia, H.P. Tan, Radiation performance of dish solar concentrator/ cavity receiver systems, Solar Energy 82 (1) (2008) pp.13-21.
  12. Romero M, Martı´nez D, Zarza E. Terrestrial solar thermal power plants: on the verge of commercialization. In: 4th intconf on sol power from space; (2004).
  13. Pytlinski JT. Solar energy installations for pumping irrigation water. Solar Energy (1978) [Review paper].
  14. Evens DL. On the performance of cylindrical parabolic solar concentrators with flat absorbers. Solar Energy 19 (1977).
  15. Harris James A, Duff William S. Focal plane flux distribution produced by solar concentrating reflectors. Solar Energy 27 (1981).
  16. Pytlinski JT. Solar energy installations for pumping irrigation water. Solar Energy 21 (1978) [Review paper].
  17. Kreider JF, Kreith F. Solar energy handbook. New York: McGraw Hill; (1981).
  18. N. Eskin, Transient performance analysis of cylindrical parabolic, Energy Convers. Manage. 40 (1999) pp. 175-191.
  19. H. Price, E. Lüpfert, D. Kearney, E.Zarza, rt al., Advances in parabolic trough solar power technology,J. solar energy (2002) pp. 109-125.
  20. S.A. Kalogirou, Solar thermal collectors and applications, Prog. Energy Combust. Sci. 30 (2004) pp. 231-295.
  21. S.K. Tyagi, S.W. Wang, M.K. Singhal, S.C. Kaushik, S.R. Park, Exergy analysis and parametric study of concentrating type solar collectors, International journal of Thermal Science 46 (2007) pp. 1304-1310.
  22. K.S. Ball, B. Farouk, V.C. Dixit, An experimental study of heat transfer in a vertical annulus with a rotating inner cylinder, (1989) International Journal of Heat and Mass Transfer 32 (1989) pp. 1517-1527.
  23. W.Q. Tao, Numerical Heat Transfer, second ed, Xi'an Jiaotong University Press, Xi'an (2001).
PDF VERSION [DOWNLOAD]
The effect and contribution of wind generated rotation on outlet temperature and heat gain of LS-2 parabolic trough solar collector

© 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