固态颗粒储热材料动态放热特性实验研究

相海杰; 闫家幸; 黄煜; 胡翠华; 陈麒光; 邢作霞

doi:10.19799/j.cnki.2095-4239.2026.0773

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固态颗粒储热材料动态放热特性实验研究

储能测试与评价 | 更新时间：2026-10-22

- 固态颗粒储热材料动态放热特性实验研究
- Experimental study on the dynamic heat release characteristics of solid particle thermal storage materials
- 储能科学与技术 2026年15卷第10期页码：4161-4171
- 作者机构：
  
  1.中油（新疆）石油工程有限公司，新疆克拉玛依 834000
  2.沈阳工业大学电气工程学院，辽宁沈阳 110870
  3.东北财经大学数据科学与人工智能学院，辽宁大连 116025
- 作者简介：
  
  相海杰（1987—），男，本科，工程师，研究方向为热能与动力和新能源，E-mail：836971381@qq.com；
  邢作霞，教授，研究方向为新能源控制与并网技术，E-mail：2148109448@qq.com。
- 基金信息：
  
  中国石油工程建设有限公司科研项目(CPECC2025KJ12)
- DOI：10.19799/j.cnki.2095-4239.2026.0773
  中图分类号： TM 932
- 收稿：2026-09-04，
  
  修回：2026-10-09，
  
  纸质出版：2026-10-28
- 稿件说明：
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相海杰, 闫家幸, 黄煜, 等. 固态颗粒储热材料动态放热特性实验研究[J]. 储能科学与技术, 2026, 15(10): 4161-4171.

XIANG Haijie, YAN Jiaxing, HUANG Yu, et al. Experimental study on the dynamic heat release characteristics of solid particle thermal storage materials[J]. Energy Storage Science and Technology, 2026, 15(10): 4161-4171.
相海杰, 闫家幸, 黄煜, 等. 固态颗粒储热材料动态放热特性实验研究[J]. 储能科学与技术, 2026, 15(10): 4161-4171. DOI： 10.19799/j.cnki.2095-4239.2026.0773.

XIANG Haijie, YAN Jiaxing, HUANG Yu, et al. Experimental study on the dynamic heat release characteristics of solid particle thermal storage materials[J]. Energy Storage Science and Technology, 2026, 15(10): 4161-4171. DOI： 10.19799/j.cnki.2095-4239.2026.0773.

摘要

为比较固态颗粒储热材料在非稳态放热过程中的温度响应，选取钢渣、沙漠沙和铝矾土，在电加热-颗粒储热-闭式空气循环实验平台上，分析初始设定温度400~800℃及储热管内径28 mm、45 mm条件下的温度-时间记录。以50℃为统一计算参照，区分降至该温度的特征冷却时间、持续10 min低于指定降温速率的判据时间，以及由目标温度和供热功率要求确定的有效放热终止时间。基于集中参数能量关系计算参照时间因数、对数放热进程和参照等效换热系数，并在三种材料共同覆盖的100 K、200 K温降区间开展综合评价及权重敏感性分析。计算采用常物性和圆柱装填近似，温区边界时刻由线性插值获得；各指标按同组材料极差归一化，并以两两得分交点确定排序临界权重。结果表明，800℃名义工况下，28 mm管中钢渣、沙漠沙和铝矾土降至50℃的时间较45 mm管分别缩短13.75%、12.64%和4.11%。在相同材料和共同温区的比较中，小管径的区间平均降温速率提高15.3%～84.1%，但按内侧面积折算的平均显热释放通量变化为-28.3%~14.5%，不呈统一下降趋势。800℃、45 mm工况下，三种材料降温速率峰值对应的对数进程分别约为0.071、0.083和0.057；不同初始温度的换热响应不存在全历程一致的排序。按持续性权重0.70和0.40分别评价100 K和200 K温降区间，钢渣在所比较工况中均得分最高，但部分工况的首位材料会随权重改变。研究明确了热响应评价与负荷侧供热能力之间的区别，可为给定装置构型下的材料和管径比较提供依据。

Abstract

This study compares the transient temperature responses of steel slag

desert sand

and bauxite in a thermal storage apparatus comprising electric heating

particle-filled tubes

and closed-loop air circulation. Measured temperature histories were analyzed for nominal initial temperatures of 400—800℃ and tube inner diameters of 28 and 45 mm. A fixed reference temperature of 50℃ was used to distinguish three quantities: the characteristic cooling time to this temperature

the first time at which a prescribed low cooling rate persisted for 10 min

and the useful-discharge endpoint defined by the temperature and heat delivery requirements of the load. Reference-based time factors

logarithmic discharge progress

and equivalent heat transfer coefficients were calculated using a lumped energy relation. Composite scores and weight sensitivity were evaluated over common measured temperature intervals with drops of 100 and 200 K. All comparisons used the same material density and specific heat values within a constant-property approximation. Packed masses were estimated from the cylindrical filling volume

and the reference heat transfer area was the inner lateral tube surface. The calculation intervals were selected from the measured temperature ranges shared by all three materials

without extrapolating the data to nominal starting temperatures that were not reached. Linear interpolation determined the times at which the interval boundaries were crossed. Each indicator was normalized by the range across the three materials within the same condition. Pairwise score intersections then identified the weights at which the material ordering changed. At a nominal initial temperature of 800℃

reducing the tube diameter from 45 to 28 mm shortened the cooling time to 50℃ by 13.75% for steel slag

12.64% for desert sand

and 4.11% for bauxite. Across the paired comparisons over common temperature intervals

the smaller tubes increased the interval-average cooling rate by 15.3%—84.1%. However

the corresponding sensible heat release flux based on the inner lateral tube area changed by -28.3% to 14.5%

showing no universal decrease. For the 45 mm tubes at nominal 800℃

the cooling-rate peaks of steel slag

desert sand

and bauxite occurred at logarithmic progress values of approximately 0.071

0.083

and 0.057

respectively. Different initial temperatures did not produce a consistent ordering of the equivalent heat transfer response throughout discharge. Steel slag received the highest composite score in all selected comparisons when the persistence weights were 0.70 for the 100 K intervals and 0.40 for the 200 K intervals. Nevertheless

the leading material changed with the evaluation weight in some conditions. The rate threshold and calculation interval also affected the low-rate criterion time. These results describe temperature-based response indicators under explicitly stated reference and geometric assumptions. They distinguish such indicators from useful heat delivery to a load and provide a reproducible basis for comparing materials and tube configurations within the tested apparatus.

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