This study defines and assesses the selection criteria for suitable particulate materials to be used in an upflow bubbling fluidized bed (UBFB) or dense up-flow powder circulation system for solar energy capture and storage. The main criteria identified are based on the thermophysical and thermomechanical properties, attrition behavior, and the considerations of health and environmental hazards of the candidate powders. Finally, a cost comparison and tentative ranking of the different candidate powders is presented in addition to a weighted scoring. Significant scoring differences can be observed between the various materials. Olivine possesses the most favorable characteristics and appears to be the particulate material of choice for solid/gas suspension heat transfer fluids.

这项研究定义并评估了用于上游捕集沸腾流化床（UBFB）或高密度上流粉末循环系统以用于太阳能捕获和存储的合适颗粒材料的选择标准。确定的主要标准是基于热物理和热机械特性，磨损行为以及候选粉末对健康和环境危害的考虑。最后，除了加权评分外，还提出了不同候选粉末的成本比较和初步排名。可以在各种材料之间观察到明显的得分差异。橄榄石具有最有利的特性，似乎是固体/气体悬浮传热流体选择的颗粒材料。