【摘要】 以Mg Cl₂·6H₂O-Ca Cl₂·6H₂O为研究体系,探讨在诱导结晶成核过程中同时引入羟基化碳纳米管（CNTs）和Sr Cl₂·6H₂O-Sr CO₃作为复合成核剂对体系储热性能的影响规律。结果表明,CNTs单独作为成核剂,可以使体系过冷度降低,并且随着CNTs加入量的增加,体系的过冷度逐渐减小;当CNTs和Sr Cl₂·6H₂O-Sr CO₃作为复合成核剂同时引入时,可以进一步降低体系的过冷度,其中CNTs、Sr CO₃和Sr Cl₂·6H₂O加入量分别为0.25%、1%和3%（质量分数）时,Mg Cl₂·6H₂O-Ca Cl₂·6H₂O体系的过冷度最小（约为0.6℃）。Mg Cl₂·6H₂O-Ca Cl₂·6H₂O相变材料过冷度减小是因为复合成核剂使体系具有较好的导热性能和较高的相变潜热。更多还原

【Abstract】 Effects of Sr Cl₂·6H₂O-Sr CO₃ and hydroxylated carbon nanotubes（CNTs）as composite nucleating agents on the energy storage properties of Mg Cl₂·6H₂O-Ca Cl₂·6H₂O in the induced crystallization nucleation process were investigated.It is suggested that the addition of CNTs can reduce system supercooling degree（SSD）,which decreases with the increase of CNTs.When the composite nucleating agents composed of Sr Cl₂·6H₂O-Sr CO₃ and CNTs are introduced,SSD can be further reduced due to its good thermal conductivity and high phase change latent heat.When the proportions of CNTs,Sr CO₃ and Sr Cl₂·6H₂O are optimized to be 0.25 wt%,1 wt%and 3 wt%,respectively,the SSD decreases to a minimum of 0.6°C.更多还原