| HFC152a/HCFC141b混合气体水合物相平衡特性研究 |
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| 引用本文： | 郭开华,张奕,舒碧芬.HFC152a/HCFC141b混合气体水合物相平衡特性研究[J].工程热物理学报,1997(6). |
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| 作者姓名： | 郭开华 张奕 舒碧芬 |
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| 作者单位： | 中国科学院广州能源研究所热泵与空调制冷技术研究中心!广州，510070，中国科学院广州能源研究所热泵与空调制冷技术研究中心!广州，510070，中国科学院广州能源研究所热泵与空调制冷技术研究中心!广州，510070 |
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| 基金项目： | 国家自然科学基金，广东省自然科学基金 |
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| 摘 要： | 1引言气体水合可使水在8—12”C络合结晶形成水合物，同时释放反应热（蓄冷）。其反应热与传热性能均较理想，被认为是理想的空调蓄冷介质山。早期研究的主要是Rll和R12的水合物。由于Rll和R12严重破坏大气臭氧层而受控，因此寻找替代CFC的新型致冷剂气体水合物成为当前的研究重点［‘－‘］。近年来我们根据混合物性能互补原理，提出了利用混合气体水合物构造性能优良的蓄冷材料的设想［‘1。HFC152a和HCFC141b分别是R12和Rll的首选替代物之一。HFC152a是较活跃的致水合物质，但相变温度和压力偏高。而HCFC141b水合物的相变温度…
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| 关 键 词： | 混合气体水合物 相平衡 共融 |
STUDY ON PHASE-EQUILIBRIUM PROPERTY OF HFC152a/HCFC141b MIXED GAS HYDRATE |
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| GUO Kaihua,ZHANG Yi,SHU Bifen.STUDY ON PHASE-EQUILIBRIUM PROPERTY OF HFC152a/HCFC141b MIXED GAS HYDRATE[J].Journal of Engineering Thermophysics,1997(6). |
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| Authors: | GUO Kaihua ZHANG Yi SHU Bifen |
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| Abstract: | In this paper, the vapor-liquid-solid phase-equilibrium property of a mixed gas hydrate formed by the blend of CFC alternatives HFC152a/HCFC14lb is studied under a constant volume condition and the phase diagram of the mixed gas hydrate is presented first time. It has been shown that a cool-storage material with superior performance property can be achieved from the mixed refrigerant hydrate, due to the principle of property compensation of mixtures. The experimelltal result reveals that HFC152a/HCFC141b mixed gas hydrate has an azeotropic melting property This means that mixed gas hydrates can has phaseequilibrium properties similar to that of mixture vapor-liquid phase equilibrium and it may be described by means of the solution theory. This discovery is significant for understanding the formation and phase change of mixed gas hydrates and improvement of gas-hydratethermal-energy-storage materials. |
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| Keywords: | mixed gas hydrate phase equilibrium azeotropic melting |
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