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| 摘要: |
| 以癸酸/肉豆蔻酸分子合金为例,研究了脂肪酸分子合金作为相变材料的热稳定性.利用差示扫描量热技术(DSC)测定了经过56,112,200,400,710次热循环后相变材料的相变温度和相变热.加速热循环实验结果表明:随着热循环次数的增加,相变材料的相变温度和相变热的变化很小,具有很好的热稳定性.分析了利用脂肪酸类相变材料制作空调储能装置的应用效果,发现该装置在储、放能过程中,可使室内温度基本稳定在20℃左右,从而节约能源,减少用户电费支出,并显著降低建筑物室内温度波动,营造健康舒适的室内热环境. |
| 关键词: 相变材料,分子合金,癸酸,肉豆蔻酸,热循环,稳定性 |
| DOI： |
| 分类号:TB34 |
| 基金项目:国家自然科学基金
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上海世博专项项目 |
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| Thermal Stability of Fatty Acid Molecular Alloy Used as Phase Change Material |
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ZHANG Dong
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| Abstract: |
| Expermental results and analysis of long-term thermal stability of capric acid/myristic acid molecular alloy as phase change material(PCM) are presented.Phase change temperature and phase change heat of the phase change materials,which have undergone 56,112,200,400 and 710 accelerated thermal cycles,were measured by differential scanning calorimetry(DSC) technique.The test results indicate that the phase change temperature and phase change heat of the phase change materials are not much changed after large number of thermal cycles. |
| Key words: phase change material,molecular alloy,capric acid,myristic acid,thermal cycling,thermal stability |
