Study on effects of dust on wall temperature of the receiver in solar power tower system

万振杰; 苏继康; 范博尧; 魏进家; 方嘉宾; 刘洋; 吴学红

doi:10.19666/j.rlfd.202503071

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Study on effects of dust on wall temperature of the receiver in solar power tower system

Thermal Power Generation Vol. 54, Issue 11, Pages: 83-90(2025)

更新时间：2026-08-11

- Study on effects of dust on wall temperature of the receiver in solar power tower system
- 作者机构：
  
  1. 郑州轻工业大学建筑环境工程学院
  2. 西安交通大学化学工程与技术学院
  3. 郑州轻工业大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202503071
  CLC： TM615
- Published：2025
- 稿件说明：
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[1]万振杰,苏继康,范博尧,等.沙尘对塔式光热发电接收器吸热管温度的影响研究[J],2025,54(11):83-90.
[1]万振杰,苏继康,范博尧,等.沙尘对塔式光热发电接收器吸热管温度的影响研究[J],2025,54(11):83-90. DOI： 10.19666/j.rlfd.202503071.

DOI：10.19666/j.rlfd.202503071.

摘要

国内外适宜发展光热发电的位置主要处于沙漠地区，环境中沙尘颗粒会沉积在接收器的吸热管道上，导致管道及涂层疲劳失效。为此，研究了沙尘颗粒对吸热管壁面温度的影响。采用数值模拟的方法，建立了沙尘-吸热管的耦合传热分析模型，模拟研究了沙尘粒径、沙尘与壁面接触大小、聚焦阳光能流密度强度对吸热管温度的影响。结论表明：吸热管上沙尘颗粒对温度的影响局限在很小范围内，但会造成吸热管局部高温热点；聚焦阳光能流密度越强、沙尘颗粒直径越大、沙尘颗粒与吸热管的接触越小，沙尘颗粒及吸热管高温热点的温度越高；沙尘颗粒温度可超过其熔点，形成钙镁铝硅酸盐（CMAS）沉积物，接收器面临CMAS腐蚀的风险；同时，吸热管高温热点将影响局部热应力分布，加剧接收器破坏，实际运行中应定期检查吸热管壁面清洁状况，避免大颗粒沙尘的积聚。该研究结果可为接收器的运行维护提供技术指导。

Abstract

At home and abroad

the locations suitable for developing concentrated solar power are mainly in desert areas. Dust in these environments may accumulate on the heat absorbing surfaces of the receiver in the solar power tower system

resulting in failure of the wall and coating of the pipe. To protect the heat absorbing walls

a coupled heat transfer model is developed for the sand-pipe

and the effects of several parameters on the wall temperature are investigated

such as the dust particle diameter

the contact areas between the dust and tube wall

and the concentrated solar energy flux density. The results show that

the influence of dust particles on the temperature of the heat-absorbing pipes is limited to a small area

but it will cause local high-temperature hot spots on the pipes. With a high concentrated solar energy flux density

a large dust particle diameter and a small contract area between the dust particles and the heat-absorbing pipes

both the temperature of the dust particle and the hot spot at the pipes will increase greatly. The temperature of the dust particles could exceed their melting point

forming calciummagnesium-aluminum-silicate(CMAS) deposits

which means the receiver is at risk of CMAS corrosion. Meanwhile

the high-temperature hot spots on the heat-absorbing pipes will affect the local thermal stress distribution

exacerbating the damage to the receiver. Therefore

during actual operation

the cleanliness of the heatabsorbing pipe walls should be regularly inspected to avoid the accumulation of large-sized dust particles. The research results can provide technical guidance for the operation and maintenance of the receiver in the concentrated solar power system.

关键词

Keywords

references

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