化工进展2025，Vol.44Issue(12)：6767-6778,12.DOI:10.16085/j.issn.1000-6613.2024-1822
梯度吸热颗粒堆积床太阳能高温耦合传热特性
Coupled heat transfer characteristics of the particle-packed receiver with gradient-absorbing design
摘要
Abstract
A gradient-absorption-packed solar receiver(GSR)comprising quartz glass balls and silicon nitride balls was proposed to increase the penetration depth of the incident solar radiation and decrease the re-radiation loss.Considering the incident solar radiation,the high-temperature coupled heat transfer model of the GSR was set up using the particle scale method.The high-temperature heat absorption characteristics of the GSR were investigated by employing numerical heat transfer and experimental verification.Results show that for the single-absorption-packed solar receiver(SSR),the thermal efficiency increases with decreasing the diameter of the silicon nitride balls.In contrast,the comprehensive efficiency(Q/ΔP)increases with increasing the diameter of the silicon nitride balls.For the GSR with D/d=5,the GSR filled with two layers of quartz glass balls yields the highest thermal efficiency when the mass flow rate is below 7.5g/s,and when the mass flow rate exceeds 7.5g/s,the GSR filled with one layer of quartz glass balls produces the highest thermal efficiency.Under the same D/d and mass flow rate conditions,the thermal efficiency and comprehensive efficiency of the GSR are higher than that of the SSR.Furthermore,the amplification increases as the working temperature increases,which suggests that the GSR is particularly suitable for high-temperature solar thermal applications.关键词
太阳能/填充床/吸热器/传热/热效率Key words
solar energy/packed bed/solar receiver/heat transfer/thermal efficiency分类
能源科技引用本文复制引用
戴贵龙,皇甫江飞,杨奕键,邓树坤,龚凌诸..梯度吸热颗粒堆积床太阳能高温耦合传热特性[J].化工进展,2025,44(12):6767-6778,12.基金项目
国家自然科学基金(52176181) （52176181）
福建省区域发展项目(2022Y3008). （2022Y3008）
