论文部分内容阅读
使用差示扫描量热仪(DSC)研究了质量分数、冷却和加热速率对纳米流体凝固熔融相变过程的影响。结果显示:纳米流体凝固相变温度随质量分数的增大先上升后降低,随冷却速率的增大而降低;凝固相变时间和潜热随冷却速率的增大均减少。纳米流体熔融相变温度不受质量分数、冷却和加热速率的影响;熔融相变时间随质量分数的增大而延长,随冷却和加热速率的增大而缩短;熔融相变潜热随冷却和加热速率的增大而减少。
Differential scanning calorimetry (DSC) was used to study the effect of mass fraction, cooling rate and heating rate on the solidification melt phase transformation of nanofluids. The results show that the phase transition temperature of nanofluids increases first and then decreases with the increase of mass fraction, and decreases with the increase of cooling rate. The solidification phase transition temperature and latent heat decrease with the increase of cooling rate. The melt phase transition temperature of nanofluids was not affected by mass fraction, cooling and heating rate. The melting phase transformation time was prolonged with the increase of mass fraction and shortened with the increase of cooling and heating rates. The latent heat of fusion phase changed with cooling and heating Rate increases and decreases.