期刊
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
卷 176, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2021.121435
关键词
Nanofluids; Silicon dioxide particles; Mass transfer enhancement; Gas-liquid two-phase flow; Microchannel
资金
- National Natural Science Foundation of China [21978197, 21776200]
- Program of Introducing Talents of Discipline to Universities [BP0618007]
The study investigates the gas-liquid two-phase flow and mass transfer enhancement by nanoparticles in CO2 absorption process using SiO2 nanofluids under Taylor flow regime. The presence of nanoparticles effectively enhances gas-liquid mass transfer, with K(L)a and pressure drop increasing with gas-liquid flow rate ratio, and CO2 absorption efficiency decreasing. However, K(L)a, CO2 absorption efficiency, and pressure drop increase with the increase of particle concentration in slurry.
The gas-liquid two-phase flow and the enhancement of mass transfer by nanoparticles for the process of CO2 absorbed by SiO2 nanofluids were investigated in a microchannel under Taylor flow regime. The influences of the dispersed and continuous phase flow rates and particle concentration in slurry on liquid side volumetric mass transfer coefficient (K(L)a), mass transfer enhancement factor (E), CO2 absorption efficiency, and pressure drop were studied systematically. The results show that the presence of nanoparticles can effectively enhance the gas-liquid mass transfer. Both K(L)a and pressure drop increase, while the CO2 absorption efficiency decreases with increasing the gas-liquid flow rate ratio. Differently, K(L)a, CO2 absorption efficiency and pressure drop increase with the increase of particle concentration in slurry. Considering the energy consumption and mass transfer enhancement effect, the effective mass transfer enhancement efficiency is in the range of 1.2 similar to 2.4, which shows the excellent enhancement performance of nanoparticles on gas-liquid mass transfer. (C) 2021 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据