铝硅合金热稳定性能的试验研究

利用自制热循环装置对储能铝硅合金进行热循环试验,研究了Si的质量分数12.07%的ZL102合金在不同热循环次数下的热稳定性能的变化,并对其结果进行了分析总结。试验结果表明:经过长达1 600次熔化-凝固循环后,铝硅合金的熔化起始温度随热循环次数的增加而略有上升,相变起始温度从579℃升高到584℃,熔化潜热略有下降,潜热值从537J/g下降到500.6J/g,铝硅合金在长期的热循环过程中有着优良和稳定的储热性能,可应用于高温太阳能热发电蓄热系统中。

A Tentative Study of the Heat Storage Properties of Al-Si Alloy

It uses the schematic graph of thermal cycles’ test setting and reseaches the changes in thermal properties of Al-Si alloy under different thermal cycles.The results show that the phase temperature of Al-Si alloy increases from 579℃to 584℃,and the latent heat decreases from 537 J/g to 500.6 J/g after 1 600 thermal cycles’ test setting.Al-Si alloy as phase change storage materials has a excellent reliability of thermal cycles in the long tem,so it can be used for depositing heat of the solar ther...