| 摘要: |
| 对既有溴化锂溶液、纳米微粒及其相应分散剂配制的纳米溶液，对比测试其与纯溴化锂溶液的表面张力和沸腾温度，探讨了该纳米溶液的热物性及其稳定性。实验发现，添加纳米微粒溶液的表面张力明显降低，经过温度工艺处理后，发现溶液中纳米微粒的颗粒度降低，纳米微粒在溴化锂溶液中几乎完全溶解，纳米溶液显现出很好的稳定性，其表面张力和沸腾温度均比纯溴化锂溶液有所降低。研究表明，最佳组份配制的纳米溶液与纳米微粒和相关分散剂有关，经过严格温度处理工艺流程，可获得稳定性、热物性良好的纳米溴化锂溶液，有利于在工程中应用。 |
| 关键词: 纳米溴化锂溶液 对比分析法 稳定性 沸腾温度 |
| DOI： |
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| 基金项目:国家自然科学基金（51176007）资助项目。 |
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| Study on Stability and Boiling Temperature of Nano-LiBr Aqueous Solution |
| Wang Liangliang,Xie Guozhen |
| (School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture) |
| Abstract: |
| Based on nano-fluid made of lithium bromide(LiBr) aqueous solution, nano-particles and its relevant dispersants, the stability and thermal-physics properties of the nano-fluid were researched through a contrastive experimental method that surface tension and boiling temperature of nano-fluid and pure LiBr aqueous solution were tested respectively. It was discovered experimentally that the surface tension of solution added nano-particles reduces significantly and granularity of the nano-fluid decreases obviously through temperature processing. The nano-particles almost completely dissolves into LiBr aqueous solution, simultaneity the solution shows better stability and both its surface tension and boiling temperature both have a decrease compared with pure LiBr aqueous solution. The study shows that best composition nano-fluids is related to the types and contents of nano-particles and relevant dispersants.Through strict temperature processing, the nano-fluid has a better engineering application than the pure LiBr solution as its good stability and better thermal-physics properties. |
| Key words: nano-LiBr aqueous solution comparative analysis approach stability boiling temperature |
