化工学报2025，Vol.76Issue(4)：1523-1533,11.DOI:10.11949/0438-1157.20240877
旋流作用下水基炭黑纳米流体光热转换性能模拟研究
Simulation study on the photothermal conversion performance of water-based carbon black nanofluid under swirling flow
摘要
Abstract
Rotor swirling flow is one of the effective ways to dynamically enhance nanofluid heat collection.This study analyzed the action of swirling flow of two blade rotors in a closed solar collector tube through numerical simulation,and the effects of irradiation intensity and nanofluid concentration on the heat collection performance of water-based carbon black nanofluid under the action of swirling flow.The results show that the swirl effect can significantly improve the heat collection performance of nanofluids,and the temperature rise can be increased by 33.81%under the action of a single rotor alone.Within the range of rotor number research(0,1,2,4),the disturbance flipping degree of the nanofluid increases with the increase of rotor number,and the heat collection performance and temperature uniformity are significantly improved.Under the action of swirling flow,within the range of irradiation intensity research(500-1500 W·m-2),the temperature rise of water-based carbon black nanofluid is linearly positively correlated with irradiation intensity.For every 100 W·m-2 increase in irradiation intensity,the temperature rise inside the collector tube can be increased by 2.7℃.Within the range of nanofluid concentration research[0%—0.010%(mass)],the amount of radiation absorbed per unit volume of nanofluid increases with increasing concentration,and the change in concentration will not affect the uniformity of the temperature distribution in the heat collector.This study simulated the photothermal conversion performance of nanofluids under the action of two blade rotors,providing a new direction for dynamic solar energy collection.关键词
两叶片转子/旋流/纳米流体/光热转换Key words
two blade rotor/swirling flow/nanofluid/photothermal conversion分类
能源科技引用本文复制引用
徐逢时,程礼盛,左夏华,于晓宇,阎华,杨卫民,安瑛..旋流作用下水基炭黑纳米流体光热转换性能模拟研究[J].化工学报,2025,76(4):1523-1533,11.基金项目
国家自然科学基金项目(52176175) （52176175）
