Robert Österholm
Lund University, LTH, Department of Energy Sciences, Lund, Sweden
Jens Pålsson
Modelon AB, Ideon Science Park, Lund, Sweden
Download article
http://dx.doi.org/10.3384/ecp140961057Published in: Proceedings of the 10th International Modelica Conference; March 10-12; 2014; Lund; Sweden
Linköping Electronic Conference Proceedings 96:110, p. 1057-1066
Published: 2014-03-10
ISBN: 978-91-7519-380-9
ISSN: 1650-3686 (print), 1650-3740 (online)
Models for dynamic simulation of a parabolic trough concentrating solar power plant were developed in Modelica for the simulation software tool Dymola. The parabolic trough power plant has a two-tank indirect thermal storage with solar salt for the ability to dispatch electric power later in the evening and during the night when little or no solar irradiation is present. The complete system consists of models for incoming solar irradiation; a parabolic trough collector field; thermal storage and a simplified Rankine cycle. A parabolic trough power plant named Andasol located in Aldeire y La Calahorra; Spain is chosen as a reference system when the complete system model is designed and built in Dymola. The system model is later verified against performance numbers from this reference system in order to make sure a correct implementation has been made. Test cases with difference in solar insolation for different part of the year is set up and simulated. These tests shows that the system model works as expected but lacks some of the dynamics present in a real thermal power plant. This is due to the use of a simplified Rankine cycle. The collector and solar model is also verified against different papers regarding solar collector performance and shows good results; which indicates a correct implementation of the different loss models.
Concentrating solar power; parabolic trough; solar salt thermal storage; dynamic modeling; Dymola; Modelica.
[1] P. Menna och D. Rossetti, ”Concentrating solar power - from research to implementation,” Office for official Publications of the European Communities, Luxembourg, 2007.
[2] W. Stine och M. Geyer, ”Chapter 11 - Energy storage,” 29 10 2013. [Online]. Available: http://www.powerfromthesun.net/Book/chapter11/chapter11.html.
[3] W. Stine och M. Geyer, ”Chapter 12 - Power Cycles for Electricity Generation,” 29 10 2013. [Online]. Available: http://www.powerfromthesun.net/Book/chapter12/chapter12.html.
[4] ”Shams 1 factsheet,” 29 10 2013. [Online]. Available: http://www.shamspower.ae/resources/media/Factsheet-ShamsFlyerEnglish.pdf.
[5] ”Technology Characterization Solar Parabolic Trough,” 29 10 2013. [Online]. Available: http://www.solarpaces.org/CSP_Technology/docs/solar_trough.pdf.
[6] ”Technology Characterization Solar Power Towers,” 29 10 2013. [Online]. Available: http://www.solarpaces.org/CSP_Technology/docs/solar_tower.pdf.
[7] ”Technology Characterization Solar Dish Systems,” 29 10 2013. [Online]. Available: http://www.solarpaces.org/CSP_Technology/docs/solar_dish.pdf.
[8] M. Gunther, ”Linear Fresnel Technology,” i Advanced CSP Teaching Materials, Enermena;Deutsches Zentrum fur Luft- und Raumfahrt.
[9] ”Concentrating Solar Power Projects by Country,” 29 10 2013. [Online]. Available: http://www.nrel.gov/csp/solarpaces/by_country.cf.
[10] ”Gemasolar plant description,” 06 06 2010. [Online]. Available: http://www.torresolenergy.com/TORRESOL/gemasolar-plant/en. [Använd 29 10 2013].
[11] ”Andasol-2,” 29 10 2013. [Online]. Available: http://www.nrel.gov/csp/solarpaces/project_detail.cfm/projectID=4.
[12] ”Parabolic Trough Projects,” 29 10 2013. [Online]. Available:
http://www.nrel.gov/csp/solarpaces/parabolic_trough.cfm.
[13] Eastman Chemical Company, ”Therminol VP-1 product description,” 28 10 2013. [Online]. Available: http://www.therminol.com/pages/products/vp-1.asp.
[14] T. Bauer och N. Breidenbach, ”Overview of molten salt storage systems and material development for solar thermal power plants,” DLR, Köln,Germany.
[15] J. A. Duffie and W. A. Beckman, Solar engineering of thermal processes, Second Edition, Madison, Wisconsin: John Wiley& Sons, 1991.
[16] J. M. Wagner och P. Gilan, ”Technical manual for the SAM physical trough model,” National Renewable Energy Laboratory, Colorado, 2011.
[17] R. Forristall, ”Heat transfer analysis and modeling of a parabolic trough solar receiver implemented in engineering equation solver,” National Renewable Energy Laboratory - U.S. Department of Energy, Coloroado, 2003.
[18] Y. Xiong, Y. Wu, C. Ma, K. Traore och Y. Zhang, ”Numerical investigation of thermal performance of heat loss of parabolic trough receiver,” Science China, pp. 444-452, 5 February 2010.
[19] F. Burkholder och C. Kutscher, ”Heat loss testing of Schott’s 2008 PTR70 parabolic trough receiver,” National Renewable Energy Laboratory, Golden,Colorado, 2009.
[20] R. Kistner, Interviewee, Dumping of heat in the Andasol power plant. [Intervju]. 18 September 2013.
[21] U. Herrmann, M. Geyer och R. Kistner, ”The Andasol Project - workshop on thermal storage for trough power systems,” FLABEG Solar International, Germany, 2002.
[22] A. Cobra, ”Andasol 1 Thermo solar energy project information,” [Online]. Available: www.estelasolar.eu/fileadmin/ESTELAdocs/documents/powerplants/Andasol.pdf. [Använd 30 October 2013]
[23] Cambridge Glassblowing Company “Borosilicate glass properties” [Online]. Available: http://www.camglassblowing.co.uk/gproperties.htm. [Used 30 October 2013]
