Effect of annular heat transfer fin on charging performance of heat storage tank using phase change material for solar thermal power plants

WANG Gang; PANG Shicheng; JIANG Tieliu

doi:10.19666/j.rlfd.202208182

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Effect of annular heat transfer fin on charging performance of heat storage tank using phase change material for solar thermal power plants

更新时间：2025-09-28

- Effect of annular heat transfer fin on charging performance of heat storage tank using phase change material for solar thermal power plants
- Thermal Power Generation Vol. 52, Issue 2, Pages: 39-45(2023)
- 作者机构：
  
  东北电力大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202208182
  CLC： TK11;TM615
- Published：2023
- 稿件说明：
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WANG Gang, PANG Shicheng, JIANG Tieliu. Effect of annular heat transfer fin on charging performance of heat storage tank using phase change material for solar thermal power plants[J]. Thermal power generation, 2023, 52(2): 39-45.
DOI：

WANG Gang, PANG Shicheng, JIANG Tieliu. Effect of annular heat transfer fin on charging performance of heat storage tank using phase change material for solar thermal power plants[J]. Thermal power generation, 2023, 52(2): 39-45. DOI： 10.19666/j.rlfd.202208182.

摘要

传热翅片可用于改善相变类材料（PCM）储热罐的运行性能。基于COMSOL软件，初步评估了环形翅片参数（翅片长度、厚度及倾斜角度）对双套管式相变储热罐蓄热性能的影响。结果表明：随着翅片长度从1.0 m增加到1.2 m

相变熔盐的总熔化时间从8 h缩短到5 h；当翅片厚度从40 mm增加到60 mm时，相变熔盐的总熔化时间从10 h缩短至6 h左右，平均蓄热速率从1.3×10~8 k J/h增加到14.8×10~8 k J/h；当翅片角度为–15°时，储热罐内PCM的总熔化时间最短，平均蓄热速率最大，为14.3×10~8 k J/h，对于本文双套管式PCM储热罐，最佳倾斜角度为–15°。研究结果可为用于太阳能光热电站的双套管式相变储热罐的设计提供依据。

Abstract

Heat transfer fins can be used to improve the operation performance of heat storage tanks using phase change filling material (PCM).Based on the COMSOL software

the effects of annular heat transfer fin’s parameters(fin length

fin thickness and fin angle) on charging performance of a double-tube PCM heat storage tank is preliminarily evaluated.The results show that

when the fin length increases from 1.0 m to 1.2 m

the total melting time of the filling material shortens from 8 h to 5 h.When the fin thickness increases from 40 mm to 60 mm

the total melting time of the filling material decreases from 10 h to about 6 h

and the average charging rate increases from 11.3×10~8 k J/h to 14.8×10~8 k J/h.When the fin angle is–15°

the tank has the shortest total melting time and the maximum average charging rate

which is 14.3×10~8 k J/h.For the double-tube PCM tank investigated in this study

the optimal fin angle is-15°.The results can provide basis for the design of double-tube PCM heat storage tanks for CSP plants.

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Related Institution

华北电力大学能源动力与机械工程学院

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Key Laboratory of Energy Transfer, Conversion and Systems in Power Stations, Ministry of Education, North China Electric Power University

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