Experiments on vapour-liquid equilibrium of CO2-ionic liquid under flow conditions and influence on its refrigeration cycle
Experiments on vapour-liquid equilibrium of CO2-ionic liquid under flow conditions and influence on its refrigeration cycle
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流动条件下CO2-离子液体汽液平衡及其对制冷循环影响的实验
DOI：
10.1016/j.applthermaleng.2020.115865
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发表时间：
2020-11
影响因子：
6.4
通讯作者：
Zhang Hua
中科院分区：
文献类型：
--
作者：
Li Kun;Wu Weidong;Wu Jiawei;Liang Hanxiang;Zhang Hua
CO2具有优良的热力学性能和环境友好性，是一种很有潜力的替代制冷剂，但其制冷循环中较高的工作压力限制了其广泛应用。针对传统CO2压缩制冷系统运行压力高的问题，提出了一种以离子液体（IL）为吸收剂的新型CO2压缩-吸收制冷系统。选择IL [emim][Tf 2N]并与CO2结合作为工作对。对CO2-[emim][Tf 2N]在流动条件下的动态汽液平衡及其对制冷循环的影响进行了实验研究。考察了溶液泵频率、CO2入口温度和压力以及系统压比对降压幅度、吸收完成度和解吸塔温度等关键参数的影响。在本研究工况范围内，系统操作高压最多可降低29%，吸收塔出口CO2-IL混合气体的吸收完成度可达70%左右。结果表明，CO2入口压力和温度对关键参数均有重要影响，较大的压力比可获得较大的降压幅度和吸收完成度，较低的解吸温度。为进一步优化系统设计、提高系统性能提供了参考。
CO2is a potential alternative refrigerant because of its excellent thermodynamic properties and environmental friendliness, but its high operating pressure in the refrigeration cycle limits its wide application. To reduce the operational high pressure of the conventional CO2compression refrigeration system, a novel CO2compression-absorption refrigeration system with ionic liquid (IL) as absorbent was proposed. The IL [emim][Tf2N] was selected and combined with CO2as a working pair. Experimental investigations on the dynamic vapour-liquid equilibrium of CO2-[emim][Tf2N] under flow conditions and the influence on its refrigeration cycle were conducted. The effects of solution pump frequency, CO2inlet temperature and pressure, and system pressure ratio on the key parameters such as depressurization amplitude, absorption completion and desorber temperature were investigated. Within the working conditions of this study, the system operational high pressure could be reduced by 29% at most, and the absorption completion of CO2-IL mixture at the absorber outlet could reach about 70%. It was found that both CO2inlet pressure and temperature had important effects on the key parameters, and a larger pressure ratio could obtain larger depressurization amplitude and absorption completion and lower desorption temperature. These provide a reference for further optimizing system design and improving system performance.
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基于加湿除湿原理的新型家用净水系统性能分析
影响因子：
9.9
作者：
Li Kun;Wu Weidong;Hu Kun;Wang Li;Hua Ruoqiu
通讯作者：
Hua Ruoqiu
影响因子：
2.6
作者：
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影响因子：
3.2
作者：
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通讯作者：
MOFFAT, RJ
DOI：
10.1016/j.ijrefrig.2014.06.014
发表时间：
2014-10
期刊：
International Journal of Refrigeration-revue Internationale Du Froid
影响因子：
--
作者：
G. Mozurkewich;Luke D. Simoni;M. Stadtherr;W. Schneider
通讯作者：
G. Mozurkewich;Luke D. Simoni;M. Stadtherr;W. Schneider
影响因子：
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作者：
Yibo Fang;Wenjie Guan;Kangli Bao;Yanzhi Wang;Xiaohong Han;Guangming Chen
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Yibo Fang;Wenjie Guan;Kangli Bao;Yanzhi Wang;Xiaohong Han;Guangming Chen