Constant Temperature Control of Solar Thermal Power Plant at Transient Variation of Sunlight

Abstract:

The constant temperature control is required for the steady output of photo thermal generator of a solar thermal power plant in the case of transient mutation of sun light . The potential risk incurred by the conventional photo thermal control system based on the temperature dependent flux control is thoroughly explored, with a proposition of a system control technique based on the law of energy conservation for the project. We present in the research that the critical factor for keeping constant temperature during photo thermal conversion is to ensure the equilibrium between input and output energy all the time between different parts of photo thermal conversion. The idea is implemented by the sun light dependent flux control. This research provides solution for overcoming the damage to susceptible system because of the transient mutation of sun light.

• Periodical: Advanced Materials Research (Volume 664)
• Pages: 1007-1011
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.664.1007
• Online since: February 2013
• Authors: Y.B. Liao, M. Yang, C. Bi, K. Zhang, Y.Q. Song, B. Zhang
• Keywords: Flow Rate, Solar Thermal, Thermal Capacity, Thermal Losses, Transient Variation of Sunlight

References

[1] C. Maffezzoni, F. Parigi. Dynamic analysis and control of a solar power plant-I Dynamic analysis and operation criteria, Solar Energy, Volume 28, Issue 2, 1982, Pages 105–116.

DOI: 10.1016/0038-092x(82)90289-4

[2] C. Maffezzoni, F. Parigi. Dynamic analysis and control of a solar power plant-II Control system design and simulation. Solar Energy, Volume 28, Issue 2, 1982, Pages 117–128.

DOI: 10.1016/0038-092x(82)90290-0

[3] E.F. Camacho a, F.R. Rubio, M. Berenguel, et al. A survey on control schemes for distributed solar collector fields Part I: Modeling and basic control approaches, Solar Energy, Volume 81, Issue 10, October 2007, Pages 1240–1251.

DOI: 10.1016/j.solener.2007.01.002

[4] Thorsten Stuetzle, Nathan Blair, John W. Mitchell, et al. Automatic Control of a 30 MWe SEGS VI Parabolic Trough Plant, Solar Energy, Volume 76 , 2004，pages 187-193.

DOI: 10.1016/j.solener.2003.01.002

[5] Tarik Ferhatbegovic, Gerhard Zucker and Peter Palensky. Model Based Predictive Control for a Solar-Thermal System, AFRICON, 13-15 Sept. 2011, Pages 1-6.

DOI: 10.1109/afrcon.2011.6071992

[6] Z. Yu and A. Dexter, Hierarchical fuzzy control of low-energy building systems, Solar Energy, Volume 84, no. 4, 2010, pages 538–548.

DOI: 10.1016/j.solener.2009.03.014

[7] A. B. Nakhi and M. A. Mahmoud, Energy conservation in buildings through efficient a/c control using neural networks, Applied Energy, Volume 73, no. 1, 2002, pages 5-23.

DOI: 10.1016/s0306-2619(02)00027-2

[8] E.F. Camachoa, F.R. Rubioa, M. Berenguel, et al. A survey on control schemes for distributed solar collector fields. Part II: Advanced control approaches. Solar Energy, Volume 81, Issue 10, October 2007, Pages 1252–1272.

DOI: 10.1016/j.solener.2007.01.001

[9] José L. Fernándeza, Miguel A. Porta-Gándarab, Norberto Chargoya, Rapid on-site evaluation of thermal comfort through heat capacity in buildings. Energy and Buildings, Volume 37, Issue 12, December 2005, Pages 1205–1211.

DOI: 10.1016/j.enbuild.2004.09.003