Document Type: Research Paper

Authors

1 MSc Student, Department of Mechanical Engineering, Tafresh University, Tafresh, Iran

2 Assistant Professor Faculty of Mechanical Engineering Tafresh University Tafresh, Iran

Abstract

Solar chimney power plants are plants based on solar thermal power including three parts of collector, chimney and turbine, which is able to produce electrical energy. One of the effective parameters in increasing the power production is the collector angles versus horizon. In the present study, a numerical analysis of a solar chimney power plant for different angles of the collector (divergent, convergent and horizontal type collector) is proposed. The introduced numerical model uses mathematical models of heat transfer. In this regard, effect of various angles of the three considered collectors on temperature distribution and power production of the solar chimney is evaluated.
Divergent type collectors produce more power than convergent and horizontal collectors, as they produce more velocity and mass flow rates. It will be shown that by increasing the angle of divergent-type collector (keeping the inlet height constant), the power production will be increased and the output temperature will be decreased, in a way that the angle variation of 0.8 to 1 will increase the divergent type collector output power by 11 % and will decrease the output temperature by 0.78%. In the other case, when the output height is kept constant and the collector angle changes, performance of the divergent type collector is better than the other two collectors. Power production in a constant mean height is shown to be 3 times and 1.5 times more than the convergent and horizontal collectors respectively.

Graphical Abstract

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Main Subjects

[1]     M. A. Bernardes, A. Vob, G. Weinrebe, “Thermal and technical analyses of solar chimneys”, Solar Energy Vol. 75, pp. 511-524, (2003).

[2]     M. A. Bernardes, “Convective heat transfer coefficients for solar chimney power plant collectors”, Heat transfer-Mathematical modelling, Numerical Methods and Information Technology, Prof. Belmiloudi A, (2011).

[3]     M. A. Bernardes, T. W. von Backstrom, D. G. Kroger, “Analysis of some available heat transfer coefficients applicable to solar chimney power plant collectors”, Solar Energy Vol. 83, No. 2, pp. 264-275, (2009).

[4]     M. A. Bernardes, T. W. von Backstrom, “Evaluation of operational control strategies applicable to solar chimney power plants”, Solar Energy Vol. 84, No. 2, pp. 277-288, (2010).

[5]     M. Tigzhen, L. Wei, X. Guoling, X. Yanbin, G. Xuhu, P. Yuan, “Numerical simulation of the solar chimney power plant systems coupled with turbine”, Renewable Energy Vol. 33, No. 5, pp. 897-905, (2008).

[6]     R. Petela, “Thermodynamic study of a simplified model of the solar chimney power plant”, Solar Energy Vol. 83, No. 1, pp. 94-107, (2009).

[7]     C. B. Maia, J. O. Castro  Silva, L. Cabezas-Gomez, S.M. Hanriot, A. G. Ferreira, “Energy and exergy analysis of the airflow inside a solar chimney”, Renewable and Sustainable energy reviews Vol. 27 pp. 350-361, (2013).

[8]     A. J. Gannon, T. W. von Backstrom, “Solar chimney cycle analysis with system loss and solar collector performance”, Solar energy engineering, pp. 122-133, (2000).

[9]     R. Sangi, M. Amidpour, B. Hosseinizadeh, “Modelling and numerical simulation of solar chimney power plants”, Solar Energy, Vol. 85, No. 5, pp. 829-838, (2011).

[10]   R. Sangi, “Performance evaluation of solar chimney power plant in Iran”, Renewable and Sustainable energy reviews Vol. 16, No. 1, pp. 704-710, (2012).

[11]   Y. J. Dai, H. B. Huang, R. Z. Wang, “Case study of solar chimney power plants in Northwestern regions of China”, Renew Energy Vol. 28, no. 8, pp. 1295-1304, (2003).

[12]   S. Larbi, A. Bouhadjar, T. Chergui, “Performance analysis of a solar chimney power plant in the southwestern region of Algeria”, Renewable and Sustainable energy reviews Vol. 14, No. 1, pp. 470-477, (2010).

[13] A. Kasaeian, M. Ghalamchi, M. Ghalamchi, “Simulation and optimization of geometric parameters of a solar chimney in Tehran”, Energy Conversion and Management Vol. 83, pp. 28-34, (2014).

[14]   A. Kasaeian, E. Heidari, Sh. Nasiri Vatan, “Experimental investigation of climatic effects on the efficiency of a solar chimney pilot power plant”, Renewable and Sustainable energy reviews, (2011).

[15]   S. K. Patel, D. Prasad, M. R. Ahmed, “Computational studies on the effect of geometric parameters on the performance of a solar chimney power plant”, Energy conversion and Management, Vol. 77, pp. 424-431, (2014).

[16] A. Koonsrisuk, T. Chitsomboon, “Mathematical modeling of solar chimney power plants”, Energy Vol. 51, pp. 314-322, (2013).

[17] A. Koonsrisuk, T. Chitsomboon, “Dynamic similarity in solar chimney modelling”, Solar Energy Vol. 81, No. 12, pp. 1439-1446, (2007).

[18]   P. Gou, J. Li, Y. Wang, Y. Liu, “Numerical analysis of the optimal turbine pressure drop ratio in a solar chimney power plant”, Solar Energy Vol. 98, pp. 42-48, (2013).

[19]   P. Guo, J. Li, Y. Wang, Y. Wang, “Evaluation of the optimal turbine pressure drop ratio for a solar chimney power plant”, Energy Conversion and Management, Vol. 108, pp. 14-22, (2016).

[20]   X. Zhou, F. Wang, J. Fan, RM. Ochieng, “Performance of solar chimney power plant in Qinghai-Tibet Plateau”, Renewable and Sustainable energy reviews Vol. 14, No. 8, pp. 2249-2255, (2010).

[21]   X. Zhou, J. Yang, B. Xiao, G. Hou, F. Xing, “Analysis of chimney height for solar chimney power plant”, Thermal Engineering, (2008).

[22]   J. P. Pretorius, D. G. Kroger, “Critical evaluation of solar chimney power plant performance”, Solar Energy Vol. 80, No. 5, pp. 535-544, (2006).

[23]   Y. J. Choi, D. H. Kam, Y. W. Park, Y. H. Jeong, “Development of analytical model for solar chimney power plant with and without water storage system”, Energy, Vol. 112, pp.  200-207, (2016).

[24]   A. S. Cocic, V. D. Djordjevic, “One dimensional analysis of compressible flow in solar chimney power plants”, Solar Energy, Vol. 135, pp. 810-820, (2016).

[25]   L. Zuo, Y. Zheng, Z. Li, Y. Sha, “Solar chimneys integrated with sea water desalination”, Desalination Vol. 276, No. 1, pp. 207-213, (2011).

[26]   X. Zhou, B. Xiao, W. Liu, X. Guo, J. Yang, J. Fan, “Comparison of classical solar chimney power system and combined solar chimney system for generation and seawater desalination”, Desalination, Vol. 250, No. 1, pp. 249-256, (2010).

[27]   N. Niroomand, M. Amidpour, “New combination of solar chimney for power generation and seawater desalination”, Desalination and Water Treatment, Vol. 51, pp. 7401-7411, (2013).

[28]   J. P. Holman, Heat transfer, 10th ed, McGraw-Hill, New York, pp. 247-248, 236.

[29]   A. Dhahri, A. Omri, J. Orfi, “CFD modelling of a solar chimney power plant”, International Congress on Renewable      Energies      and      the    Environment, (2012).

[30]   H. Huang, H. Zhang, Y. Huang, F. Lu, “Simulation      calculation    on    solar  chimney power plant system”, International conference on power engineering, pp. 1158-1161, (2007).

                                   

 

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