Experimental study of gas-liquid heat transfer in a 2-phase flow in a packed bed

7th European Thermal-Sciences Conference

Niegodajew, Pawel^1 ; Asendrych, Dariusz^1

Czstochowa University of Technology, al. Armii Krajowej 21, Czstochowa, PL

42-200, Poland^1

关键词: 2-phase flows;    Experimental investigations;    Gas liquid heat transfer;    Glass Raschig rings;    Heat exchange;    Inner diameters;    Liquid phasis;    Temperature differences;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/745/3/032139/pdf
DOI  :  10.1088/1742-6596/745/3/032139

来源: IOP

【 摘 要 】

The paper deals with an interfacial heat exchange between gas (air) and liquid (water) flowing countercurrently through a packed bed. The experimental investigation was performed with the use of column of 0.1 m inner diameter and filled in with glass Raschig rings. Loads of working media ranged between 0.018 0.142 m3(m2s)-1and 0.0007 0.0053 m3(m2s)-1for gas and liquid phases, respectively. It was found that interfacial Nusselt number is mainly dependent on the gas load, noticeably influenced by the temperature difference between phases and practically independent of the liquid load.