Geometric optimization of a solar cubic-cavity multi-tubular thermochemical reactor using a Monte Carlo-finite element radiative transfer model

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• 作者：P.J. Valades-Pelayo^a ; H. Romero-Paredes^b ; C.A. Arancibia-Bulnes^a ; ^{caab@ier.unam.mx" class="auth_mail" title="E-mail the corresponding author} ; H.I. Villafá ; n-Vidales^a
• 关键词：Solar energy ; Solar thermochemical reactor ; Tubular reactor ; Radiative transfer ; Monte Carlo
• 刊名：Applied Thermal Engineering
• 出版年：2016
• 出版时间：5 April 2016
• 年：2016
• 卷：98
• 期：Complete
• 页码：575-581
• 全文大小：2734 K

文摘

In the present study, the optimization of a multi-tubular solar thermochemical cavity reactor is carried out. The reactor consists of a cubic cavity made of woven graphite, housing nine 2.54 cm diameter tungsten tubes. A heat transfer model is developed and implemented considering high-temperature radiative transfer at steady state. The temperature distribution on the receiver tubes is determined by using a hybrid Monte Carlo-finite volume approach. The optimization aims at maximizing average tube temperature by varying tube locations. Optimal tube distributions are explored by using a custom-made stochastic, multi-parameter, global optimization algorithm. A considerable increase in average temperature as well as improvement on temperature uniformity is found in the optimized tube arrays. Patterns among the different optimal distributions are found, and general features are discussed.