球形相变储能单元填充床瞬态传热特性数值研究
Numerical Study on Transient Heat Transfer Characteristics of Packed Beds of Spherical Phase Change Energy Storage Elements
DOI: 10.12677/MOS.2022.112041, PDF,  被引量   
作者: 兰 健, 郭雪岩：上海理工大学能源与动力工程学院，上海
关键词: 储能；填充床；穿孔球；相变材料；Energy Storage； Packed Bed； Sphere with Holes； Phase Change Material
摘要: 填充床储热装置作为储能子系统广泛应用于诸如光热电站等能源系统。本文采用数值模拟方法对不同结构的球形储能单元构成的填充床储能装置的瞬态传热特性进行了研究。使用的球形储能单元包括光滑球体、表面带凹坑球体和带贯穿孔洞球体，研究发现穿孔小球的储热性能优势明显。基于带孔小球储能单元比较分析了相变材料以及非相变材料组成的储能填充床的储能性能，研究结果表明相变材料的潜热明显提高了储能量。本文也研究了储能单元孔径、传热介质入口温度和储能材料潜热值对储热性能的影响。
Abstract: Packed bed based heat storage devices are widely utilized as energy storage subsystem in energy systems such as solar thermal power stations. In this work, transient heat transfer characteristics of heat storage packed beds of spherical energy storage elements were numerically investigated. The utilized spherical energy storage elements include smooth spheres, grooved spheres and spheres with holes. It has been found that heat storage performance of the packed beds of spheres with holes is obviously better than that of the other two types. Heat storage performance of packed beds of phase change material elements was compared with that of beds with non-phase-change elements based on spheres with holes. The results indicate that the latent heat obviously enhances the heat storage. Influences of hole size of spheres, inlet temperature of fluid and latent heat of heat storage materials on heat storage performance were also studied in this paper.
文章引用：兰健, 郭雪岩. 球形相变储能单元填充床瞬态传热特性数值研究[J]. 建模与仿真, 2022, 11(2): 442-453. https://doi.org/10.12677/MOS.2022.112041

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