| 摘要: |
| 本文采用压缩式制冷循环，研究了不同质量浓度（0.4、0.5、0.6 g/L）的表面活性剂十二烷基硫酸钠（SDS）溶液、不同质量浓度（0.2、0.3、0.4 g/L）的表面活性剂十二烷基苯磺酸钠（SDBS）溶液及复配表面活性剂溶液（SDS+SDBS）中，CO2水合物的蓄冷特性。结果表明：与纯水体系相比，SDS、SDBS及SDS+SDBS对CO2水合物蓄冷性能均有强化作用，且3种表面活性剂的最佳质量浓度分别为0.5 g/L、0.3 g/L、0.5 g/L（SDS）+0.3 g/L（SDBS）。对比3种最佳质量浓度的表面活性剂发现，采用0.5 g/L（SDS）+0.3 g/L（SDBS））时蓄冷性能最优：预冷时间（21.51 min）和蓄冷时间（27.56 min）最短；潜热蓄冷量（1 308.27 kJ）、总蓄冷量（2 967.35 kJ）、平均蓄冷速率（1.79 kW）和水合物生成质量（2.55 kg）均最大，说明复配表面活性剂对于CO2水合物蓄冷性能具有最显著的强化效果。 |
| 关键词: 压缩式制冷循环 蓄冷 CO2水合物 表面活性剂 |
| DOI： |
| Received:October 19, 2022Revised:January 03, 2023 |
| 基金项目:国家自然科学基金(50806050)资助项目。 |
|
| Cold Thermal Energy Storage Characteristics of CO2 Hydrate Enhanced by Compounding Surfactant SDS+SDBS |
|
Yu Qiancheng, Xie Yingming, Wang Ning, Weng Shengqiao, Zhou Qi, Li Jiajun
|
| (School of Energy and Power Engineering, University of Shanghai for Science and Technology) |
| Abstract: |
| The cold thermal energy storage characteristics of CO2 hydrates were studied in different mass concentrations of SDS surfactant (0.4, 0.5, and 0.6 g/L), SDBS surfactant (0.2, 0.3, and 0.4 g/L), and compound surfactants (SDS+SDBS) using a vapor compression refrigeration system. Compared with a pure-water system, SDS, SDBS, and compound (SDS+SDBS) surfactants improve the CO2 hydrate cold thermal energy storage performance, and the best concentrations of the surfactants were 0.5 g/L, 0.3 g/L, and 0.5 g/L(SDS)+0.3 g/L(SDBS), respectively. Comparing the cold thermal energy storage performance of SDS, SDBS, and compound (SDS+SDBS) surfactants, the compound surfactant 0.5 g/L(SDS)+0.3 g/L(SDBS) had the best cold thermal energy storage performance: the precooling time (21.51 min) and cold thermal energy storage time (27.56 min) were the shortest. The latent heat storage capacity (1 308.27 kJ), total storage capacity (2 967.35 kJ), average charging rate (1.79 kW), and hydrate formation mass (2.55 kg) were the largest. The findings indicate that the compound surfactant had the most significant effect on the CO2 hydrate cold thermal energy storage characteristics of this system. |
| Key words: vapor compression refrigeration cycle cold thermal energy storage CO2 hydrate compound surfactants |
