磁流体由于其独特的优势在太阳能光热转换领域受到关注。首先探讨了磁流体导热系数、黏度等热物性参数,并分析了影响磁流体热物性的因素。综述了在光热转换过程中磁流体浓度、光程及磁场参数等对光热转换效率的影响。另外,指出外加磁场作用下能够实现磁性纳米颗粒的回收利用,为纳米流体二次换热热损失、堵塞管道及二次污染等问题提供解决方案。
Magnetic fluid has attracted much attention in the field of solar photothermal conversion because of its unique advantages.In this work,the thermal properties of magnetic fluid such as thermal conductivity and viscosity were discussed,and factors affecting the thermal properties of magnetic fluids were also analyzed.The effects of magnetic fluid concentration,optical path and magnetic field parameters on photothermal conversion efficiency were reviewed.In addition,it was pointed out that magnetic nanoparticles could be recycled under the action of external magnetic field,which provided solutions to the problems of secondary heat loss,pipe blockage and secondary pollution of nano-fluids.
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基金资助
国家自然科学基金项目(51906013);北京建筑大学金字塔人才培养工程建大英才项目(JDYC20200316);北京建筑大学研究生创新项目(PG2022056)
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