| 摘要: |
| 本文选用高热稳定性的氨基功能型离子液体3-丙胺基-三丁基鏻甘氨酸盐([aP4443][Gly])水溶液为吸收剂与CO2组成新型吸收式制冷循环工质对。根据已测定的CO2在[aP4443][Gly]水溶液中的溶解度，拟合并外延得到300~510 K，1~10 MPa条件下[aP4443][Gly]水溶液中CO2的溶解度。测定了285~365 K温度范围内不同浓度[aP4443][Gly]水溶液的比热容，计算得到[aP4443][Gly]水溶液的焓值。用两种方法分析了[aP4443][Gly]水溶液对CO2的吸收焓，得到CO2-[aP4443][Gly]-H2O体系的焓值。根据以上数据分析计算CO2-[aP4443][Gly]-H2O单效吸收式制冷循环效率。结果表明：CO2-[aP4443][Gly]-H2O工质对可以在很高的温度环境下工作，在发生温度为393.15 K，蒸发温度为278.15 K时，其制冷循环效率可达0.85，在更高的发生温度下，制冷循环效率可达0.91，说明[aP4443][Gly]水溶液/CO2工质对具有成为新型吸收式制冷工质对的巨大潜力。 |
| 关键词: 氨基离子液体 水溶液 CO2 吸收式制冷 |
| DOI： |
| 投稿时间：2018-01-09 修订日期：2018-04-04
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| 基金项目:国家自然科学基金（51076169）资助项目。 |
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| Study on Amino Ionic Liquid/CO2 High-temperature and High-efficiency Absorption Refrigeration Cycle |
| Zhao Tianyu,Guo Kaihua,Huangfu Lixia,Chen Ying |
| (School of Engineering, Sun Yat-Sen University) |
| Abstract: |
| In this work, a high thermal stability amino-functional ionic liquid 3-aminopropyl-tributylphosphonium glycine ([aP4443][Gly]) aqueous solution and CO2 were used as absorbent to form a new type of absorption working pair. The solubility of CO2 in [aP4443][Gly] under the conditions of 300–510 K and 1–10 MPa was fitted with the solubility data of CO2 in [aP4443][Gly]. The specific heat capacity of [aP4443][Gly] aqueous solution was tested under different temperatures which ranged from 285 to 365 K, and the enthalpy of the [aP4443][Gly] aqueous solution was calculated. The absorption enthalpy of CO2 in the [aP4443][Gly] aqueous solution was calculated using two methods, and the enthalpy of this system was obtained. Then the abovementioned data were used to calculate the CO2-[aP4443][Gly] absorption refrigeration cycle efficiency. The results show that the CO2-[aP4443][Gly]-H2O working fluid can work at very high temperatures. When the generator temperature was 393.15 K and evaporation temperature was 278.15 K, the refrigeration-cycle efficiency could reach 0.85. At higher generator temperatures, the refrigeration cycle efficiency could reach up to 0.91, indicating that the working fluid can possibly become a new type of absorption refrigerant. |
| Key words: amino ionic liquid aqueous solution CO2 absorption refrigeration |
