Geometric modularity in the thermal modeling of solar steam turbines

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Abstract

To optimize the start-up schedules of steam turbines operating in concentrating solar power plants, accurate predictions of the temperatures within the turbine are required. In previous work by the authors, thermal models of steam turbines have been developed and validated for parabolic trough solar power plant applications. Building on these results, there is an interest to increase the adaptability of the models with respect to different turbine geometries due to the growing trend of having larger steam turbines in parabolic trough and solar tower power plants. In this work, a modular geometric approach has been developed and compared against both the previous modeling approach and 96h of measured data from an operational parabolic trough power plant. Results show a large degree of agreement with respect to the measured data in spite of the different detail levels. The new model allows for simple and fast prediction of the thermal behavior of different steam turbine sizes and geometries, which is expected to be of significant importance for future concentrating solar power plants. © 2013 The Authors.

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Topel, M., Spelling, J., Jöcker, M., & Laumert, B. (2014). Geometric modularity in the thermal modeling of solar steam turbines. In Energy Procedia (Vol. 49, pp. 1737–1746). Elsevier Ltd. https://doi.org/10.1016/j.egypro.2014.03.184

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