Solar energy;
Solar thermochemical reactor;
Tubular reactor;
Radiative transfer;
Monte Carlo;
HEAT-TRANSFER MODEL;
RECEIVER;
D O I:
10.1016/j.applthermaleng.2016.01.002
中图分类号:
O414.1 [热力学];
学科分类号:
摘要:
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. (C) 2016 Elsevier Ltd. All rights reserved.