Comparison on Promotion Effect of Various Types of Surfactants on HCFC-141b Hydrate Induction Time

2017 International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Li, Juan^1 ; Sun, Zhigao^1 ; Liu, Chenggang^1 ; Zhu, Minggui^1

School of Environmental Science and Engineering, Suzhou University of Science and Technology, Jiangsu, China^1

关键词: Conditioning equipment;    Critical temperatures;    Energy-saving technologies;    HCFC-141b hydrate;    Hydration systems;    Phase equilibrium diagrams;    Promotion effects;    Temperature curves;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/322/2/022041/pdf
DOI  :  10.1088/1757-899X/322/2/022041

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Cold storage in air conditioning based on refrigerant hydrate is a new-type energy saving technology to reduce initial investment and running cost of air conditioning equipments and improve system stability. Refrigerant hydrate is generated under critical temperature and pressure condition, while surfactant is an effective medium to promote its phase equilibrium. In this paper, in order to research such promotion effect, different type of surfactants with unique mechanism, SDS, Tween80 and Span80, n-BA were selected to compare the respective impact on HCFC141b hydrate induction time based on temperature curve. Experimental results showed that no obvious change had been discovered when no surfactant was added into pure water system, which coincided with phase equilibrium diagram of HCFC141b. All the four kinds of surfactants had realized promotion effect to various degrees. For each hydration system, a large gap existed between the longest and the shortest induction time in 6 groups of parallel experiments, meaning relatively poor system stability. Under the combined effect of Tween80 (2wt%), Span80 (0.1wt%) and n-BA (0.1wt%), average and the shortest induction time was 20.9min and 17.5min respectively, corresponding to the best promotion effect.