适用于下一代太阳能热发电的集热颗粒磨损特性研究

陈冬; 吕洪坤; 丁历威; 来振亚; 肖刚; 祝培旺

doi:10.19912/j.0254-0096.tynxb.2023-0618

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (8) : 432-440. DOI: 10.19912/j.0254-0096.tynxb.2023-0618

适用于下一代太阳能热发电的集热颗粒磨损特性研究

陈冬^1~3, 吕洪坤⁴, 丁历威⁴, 来振亚⁴, 肖刚^1~3, 祝培旺^1~3

作者信息 +

STUDY ON ATTRITION CHARACTERISTICS OF PARTICLES SUITABLE FOR NEXT GENERATION SOLAR THERMAL POWER GENERATION SYSTEM

Chen Dong^1~3, Lyu Hongkun⁴, Ding Liwei⁴, Lai Zhenya⁴, Xiao Gang^1~3, Zhu Peiwang^1~3

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文章历史 +

摘要

以铝矾土惰性颗粒为研究对象,使用三腔磨损试验台获取颗粒耐磨性能和粒径分布变化规律,颗粒120 h磨损率约2.5%,粒径分布演变模型中转化比例符合正态分布（σ=1/2，ds=4d）时模拟效果最好。提出磨损转换系数,通过引入磨损耗散能量作为中间量,将磨损测试设备中获取的颗粒磨损特性推广到实际太阳能热发电系统中。以100 kW太阳能热发电系统为例,计算得铝矾土惰性颗粒在系统各设备间循环一次的磨损相当于在三腔磨损试验台中运行0.0114 h,从而获得系统补料策略。

Abstract

Solid particles have emerged as a promising new heat transfer and storage medium for solar thermal power generation, offering the potential to improve efficiency. Using bauxite inert particles as the research object, a three-chamber attrition test rig was used to obtain the particle attrition resistance and particle size distribution variation rules. The particles experienced a mass loss of approximately 2.5% after 120 hours, and the most effective simulation was achieved when the mass exchange ratio in the particle size distribution evolution model was in accordance with a normal distribution （σ=1/2,ds=4d）. To extend these findings to the solar thermal power system, an attrition conversion coefficient was proposed using attrition dissipation energy as an intermediate quantity. Using a 100 kWe system as an example, it’s calculated that one cycle of bauxite inert particles between the system devices is equivalent to 0.0114 hours of operation in a three-chamber attrition test rig. These findings offer valuable insights for the calculation of long-term system economics and the development of operating strategies.

导出引用

陈冬, 吕洪坤, 丁历威, 来振亚, 肖刚, 祝培旺. 适用于下一代太阳能热发电的集热颗粒磨损特性研究[J]. 太阳能学报. 2024, 45(8): 432-440 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0618

Chen Dong, Lyu Hongkun, Ding Liwei, Lai Zhenya, Xiao Gang, Zhu Peiwang. STUDY ON ATTRITION CHARACTERISTICS OF PARTICLES SUITABLE FOR NEXT GENERATION SOLAR THERMAL POWER GENERATION SYSTEM[J]. Acta Energiae Solaris Sinica. 2024, 45(8): 432-440 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0618

中图分类号： TM615 TK512

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