综合智慧能源 ›› 2026, Vol. 48 ›› Issue (6): 34-45.doi: 10.3969/j.issn.2097-0706.2026.06.003
王子瑄1,2(
), 鹿院卫1,2,*(
), 杨涵1,2(
), 吴玉庭1,2(
)
收稿日期:2025-12-29
修回日期:2026-02-02
出版日期:2026-06-25
通讯作者:
*鹿院卫(1971),女,教授,博士,从事可再生能源利用方面的研究,luyuanwei@bjut.edu.cn作者简介:王子瑄(2001),男,硕士生,从事混合熔盐热物性计算、螺旋缠绕管换热器多目标优化设计等方面的研究,zixuanwang@emails.bjut.edu.cn;基金资助:
WANG Zixuan1,2(
), LU Yuanwei1,2,*(
), YANG Han1,2(
), WU Yuting1,2(
)
Received:2025-12-29
Revised:2026-02-02
Published:2026-06-25
Supported by:摘要:
螺旋缠绕管换热器(SWHE)在燃煤机组深度调峰系统的蒸汽-熔盐换热过程中具有重要应用前景。现有研究多集中于SWHE的几何结构优化,工质热物性变化对SWHE的性能调控作用存在研究空白。通过集成SWHE设计计算模型与非支配排序遗传算法,构建了以冷/热侧综合性能评价指标、平均传热系数、壳外径和总熵产数为目标的多目标优化框架,针对5种混合熔盐(太阳盐、Hitec盐、Hitec XL盐、四元硝酸盐、三元硝酸盐)开展优化设计研究。结果表明,工质的热物性会显著影响SWHE的几何参数与其性能的关联性:高黏度熔盐(如Hitec XL)作为工质的SWHE,其缠绕角度与总传热系数呈强正相关,且增大管外径可使总传热系数增大,这与其他熔盐作为工质的SWHE有显著不同;高热导率熔盐(如四元硝酸盐)作为工质的SWHE,其缠绕角度与熵产数的相关性呈现出与其他熔盐作为工质时相反的特性。最后,通过单位体积换热强度与熵产数的综合决策,从多目标优化获得的帕累托解集中筛选出4种推荐方案:方案1虽然具有最优紧凑性(换热面积984.96 m2,建设成本583.8万元),但运行成本较高(115.31万元/a);方案4虽然换热面积较大(3 904.88 m2)、建设成本较高(1 216.1万元),但凭借低熵产特性使运行成本较方案1降低了51.5%(55.93万元/a)。研究结果揭示了混合熔盐的热物性对SWHE性能与几何参数的关联性,为熔盐配方选择与SWHE工程设计提供了理论依据与实践方案。
中图分类号:
王子瑄, 鹿院卫, 杨涵, 吴玉庭. 工质物性驱动的SWHE性能与几何参数关联研究[J]. 综合智慧能源, 2026, 48(6): 34-45.
WANG Zixuan, LU Yuanwei, YANG Han, WU Yuting. Research on correlation between SWHE performance and geometric parameters driven by working fluid physical properties[J]. Integrated Intelligent Energy, 2026, 48(6): 34-45.
表3
混合熔盐比热容拟合公式
| 混合熔盐 | 比热容拟合公式 |
|---|---|
| 太阳盐 | |
| Hitec | |
| Hitec XL | |
| 四元盐 | |
| 三元盐 |
表4
混合熔盐热导率拟合公式
| 混合熔盐 | 热导率拟合公式 |
|---|---|
| 太阳盐 | |
| Hitec | |
| Hitec XL | |
| 四元盐 | |
| 三元盐 |
表5
混合熔盐黏度拟合公式
| 混合熔盐 | 黏度拟合公式 |
|---|---|
| 太阳盐 | |
| Hitec | |
| Hitec XL | |
| 四元盐 | |
| 三元盐 |
表6
SWHE的传热与压降计算公式
| 模型 | 公式 | 补充公式 |
|---|---|---|
| 壳侧传热计算模型 | ||
| 壳侧压降计算模型 | ||
| 管侧传热计算模型 | ||
| 管侧压降计算模型 |
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