空气-沙子移动床换热器传热特性实验研究

杨建蒙; 孙源敏; 侯党员; 李斌; 孟繁旭; 陈海生

doi:10.19912/j.0254-0096.tynxb.2020-0260

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太阳能学报 ›› 2022, Vol. 43 ›› Issue (2) : 276-281. DOI: 10.19912/j.0254-0096.tynxb.2020-0260

空气-沙子移动床换热器传热特性实验研究

杨建蒙¹, 孙源敏¹, 侯党员¹, 李斌¹, 孟繁旭¹, 陈海生²

作者信息 +

EXPERIMENTAL STUDY ON HEAT TRANSFER CHARACTERISTICS OF AIR-SAND MOVING BED HEAT EXCHANGER

Yang Jianmeng¹, Sun Yuanmin¹, Hou Dangyuan¹, Li Bin¹, Meng Fanxu¹, Chen Haisheng²

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文章历史 +

摘要

面向太阳能热发电系统,建立一种空气-沙子移动床换热器实验平台,对其在不同参数下进行传热性能的实验研究。并基于实验数据,利用线性回归拟合得到表观气固传热系数的关联式,其整个实验工况预测值与实验值的平均误差为3.57%。研究结果表明：较高雷诺数可提升空气-沙子移动床换热器的传热效能,空气进口温度为281 ℃时,空气-沙子移动床换热器的固相传热效能可达93.56%。当沙子流量不变时,沙子粒径的变化并不会大幅度影响空气-沙子移动床换热器的换热效果。

Abstract

An experimental platform of air- sand moving bed heat exchanger is established for solar thermal power generation system and the heat transfer performance of air - sand moving bed heat exchanger under different parameters was studied experimentally. Based on the experimental data, the correlation formula of gas-solid heat transfer coefficient is obtained by using linear regression fitting, and the average error between the predicted value and the experimental value of the whole experimental condition is 3.57%. The results show that the higher Reynolds number can improve the heat transfer effectiveness of air-sand moving bed heat exchanger, When the air inlet temperature is 281 ℃, the heat transfer effectiveness of air-sand moving bed heat exchanger can reach 93.56%. When the flow rate of sand is constant, the change of sand particle size will not greatly affect the heat transfer effect of air-sand moving bed heat exchanger.

导出引用

杨建蒙, 孙源敏, 侯党员, 李斌, 孟繁旭, 陈海生. 空气-沙子移动床换热器传热特性实验研究[J]. 太阳能学报. 2022, 43(2): 276-281 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0260

Yang Jianmeng, Sun Yuanmin, Hou Dangyuan, Li Bin, Meng Fanxu, Chen Haisheng. EXPERIMENTAL STUDY ON HEAT TRANSFER CHARACTERISTICS OF AIR-SAND MOVING BED HEAT EXCHANGER[J]. Acta Energiae Solaris Sinica. 2022, 43(2): 276-281 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0260

中图分类号： O325 TK79

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