A detailed nonuniform thermal model of a parabolic trough solar receiver with two halves and two inactive ends |
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| Affiliation: | 1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, China;2. School of Engineering, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK;3. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai, China;4. Marine Design & Research Institute of China, Shanghai, China;5. Deepwater Technology Research Centre, Bureau Veritas, Singapore;1. Thermodynamics Laboratory, University of Liège, Campus du Sart Tilman, B49, B-4000 Liège, Belgium;2. CIEMAT-PSA, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Plataforma Solar de Almeria, Crta. de Senés s/n, 04200 Tabernas (Almería), Spain;1. Institute of Chemical Technology, Matunga, Mumbai 400 019, India;2. Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India;1. Power & Energy System Department, Idaho National Laboratory, Idaho Falls, ID 83402, USA;2. Ingeniería en Energía, Facultad de Ingenierías, Universidad de Medellín, Medellín, Colombia;3. Ingeniería Térmica Ltda., Medellín, Colombia;4. Fundación Ergon, Medellín, Colombia;5. Department of Mechanical Engineering, FAMU-FSU College of Engineering, Energy and Sustainability Center, and Center for Advanced Power Systems, Florida State University, Tallahassee, FL 32310, USA |
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| Abstract: | In this paper a detailed one dimensional nonuniform thermal model of a parabolic trough solar collector/receiver is presented. The entire receiver is divided into two linear halves and two inactive ends for the nonuniform solar radiation, heat transfers and fluid dynamics. Different solar radiation and heat transfer modes can be taken into consideration for these four different regions respectively. This enables the study of different design parameters, material properties, operating conditions, fluid flow and heat transfer performance for the corresponding regions or the whole receiver. Then the nonuniform model and the corresponding uniform thermal model are validated with known performance of an existing parabolic trough solar collector/receiver. For applications, the uniform thermal model can be used to quickly compute the integral heat transfer performance of the whole PTC system while the nonuniform thermal model can be used to analyze the local nonuniform solar radiation and heat transfer performance characteristics and nonuniform heat transfer enhancements or optimizations. Later, it could also be effectively used with an intelligent optimization, such as the genetic algorithm or the particle swarm optimization, to quickly evaluate and optimize the characteristics and performance of PTCs under series of nonuniform conditions in detail. |
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| Keywords: | Solar energy Parabolic trough solar collector Nonuniform solar flux Heat transfer analysis Nonuniform thermal model |
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