Heat transfer and pressure drop characteristics of CO2 mixtures in a pipeline under the seawater condition
Heat transfer and pressure drop characteristics of CO2 mixtures in a pipeline under the seawater condition
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DOI：
10.1016/j.ijheatmasstransfer.2019.03.026
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发表时间：
2019-06
影响因子：
5.2
通讯作者：
Wonkeun Baik;Wonjun Lee;Rin Yun
中科院分区：
文献类型：
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作者：
Wonkeun Baik;Wonjun Lee;Rin Yun
从CO2排放源捕获的CO2中含有N2、CH 4、H2O、O2和Ar等杂质，这些杂质在超临界条件下随CO2在管道中输送。实验研究了海水环境条件下CO2+ N2和CO2+ CH 4中杂质对管内传热和压降的影响。实验装置包括一个测试部分，热交换器连接到两个冷水机组，和一个磁力齿轮泵。试验段由插入聚氯乙烯（PVC）管中的库珀制成，形成双管。CO2混合物的操作温度和压力分别为25-55 °C和80-100 bar。质量通量分别为300、500和700 kg m−2s−1。CO2混合物中CO2的摩尔分数在1.00-0.95之间变化。当CO2摩尔分数从1.00降低到0.95时，CO2+ N2和CO2+ CH 4的最大传热系数分别降低了4157和1224 W m-2K-1，平均压降增加了29.87%。
Captured CO2from CO2emission sources contains impurities such as N2, CH4, H2O, O2and Ar, and these are transported with the CO2in pipelines under supercritical condition. The aim of this study is to experimentally investigate the effects of impurities in CO2+ N2and CO2+ CH4on the in-tube heat transfer and pressure drop under seawater environmental conditions during pipeline transportation. The experimental apparatus consisted of a test section, heat exchangers that were connected to two chillers, and a magnetic gear pump. The test section was made by a cooper tube that was inserted into a Polyvinyl Chloride (PVC) pipe to form a double-tube. The operational temperature and pressure of the CO2mixture ranged 25–55 °C and 80–100 bar, respectively. The mass flux was varied by 300, 500, and 700 kg m−2s−1. The mole fraction of CO2in the CO2mixtures was varied from (1.00–0.95). When the CO2mole fraction decreased from 1.00 to 0.95, the maximum heat transfer coefficients of CO2+ N2and CO2+ CH4decreased by 4157 and 1224 W m−2K−1, respectively, and the average pressure drop of CO2+ CH4increased by 29.87%.