Experimental and Numerical Simulation Study on a Beam-down Concentrating Molten Salt Receiver

XIE Wentao; GU Xinzhuang; DAI Yanjun; XU Da; LIN Meng; YU Bo; SONG Shixiong

doi:10.19805/j.cnki.jcspe.2025.240162

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Experimental and Numerical Simulation Study on a Beam-down Concentrating Molten Salt Receiver

更新时间：2025-10-16

- Experimental and Numerical Simulation Study on a Beam-down Concentrating Molten Salt Receiver
- Chinese Journal of Power Engineering Vol. 45, Issue 5, Pages: 685-692(2025)
- 作者机构：
  
  1. 鑫晨光热(上海)新能源有限公司,上海,201114
  2. 上海交通大学机械与动力工程学院,上海,200240
  3. 南方科技大学机械与能源工程系,广东,深圳,518055
  4. 中国电力工程顾问集团西南电力设计院有限公司,四川,成都,610057
  5. 上海晶电新能源有限公司,上海,201114
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240162
  CLC： TK513.1;TM615
- Published Online：19 May 2025，
  
  Published：2025
- 稿件说明：
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谢文韬,顾新壮,代彦军,徐达,林蒙,余波,宋士雄. 二次反射聚光熔盐吸热器的实验与数值模拟研究动力工程学报, 2025, 45(5): 685-692 https://doi.

org/10.19805/j.cnki.jcspe.2025.240162
谢文韬,顾新壮,代彦军,徐达,林蒙,余波,宋士雄. 二次反射聚光熔盐吸热器的实验与数值模拟研究动力工程学报, 2025, 45(5): 685-692 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240162.

org/10.19805/j.cnki.jcspe.2025.240162 DOI：

摘要

设计并搭建了T型熔盐吸热器

通过建立熔盐吸热器的三维数值模型

将二次聚光太阳能照射的边界条件与熔盐流动、换热以及光吸收相耦合

揭示了吸热器的能量损耗机制

并分析对比了熔盐的消光系数、流量分配和滤光网位置对吸热器内部温度分布的影响。结果表明:熔盐出口温度达到560~570 ℃;吸热器的主要能量损失来自开口再辐射损失、对流损失和光学反射损失等;相比于具有较大消光系数和浅层滤光网的熔盐吸热器

消光系数较小的熔盐吸热器内部温度更高

深层熔盐大量吸热后无法被快速排出

导致了吸热器内部的热量堆积。

Abstract

A T-shaped molten salt receiver was designed and modelled. A 3D numerical model of the reciver was established

coupling the boundary conditions of the beam-down concentrated solar radiation with molten salt flow

heat transfer

and solar energy absorption. The energy loss mechanisms of the receiver were revealed and the impacts of the molten salt's extinction coefficient

flow distribution

and filter mesh location on the internal temperature distribution of the receiver were analyzed via this approach. Results show that the outlet molten salt temperature reaches 560-570 ℃. The main energy losses are re-radiation loss

convection loss and optical reflection loss. The receiver with smaller extinction coefficient exhibits higher internal temperatures compared with receivers with larger extinction coefficient and shallow filter mesh

as the substantial heat absorbed by deep-layer molten salt cannot be rapidly discharged

leading to a heat accumulation inside the receiver.

关键词

Keywords

references

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