Surfactant Drag Reduction in Internally-Grooved Rough Tubes

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Hiromoto Usui¹  Manuel R. De Guzman³  Tatsuo Nishimura²  Takashi Saeki³ 

[1] Department of Chemical Science and Engineering, Kobe University;Department of Mechanical Engineering, Yamaguchi Univeristy;Department of Applied Chemistry and Chemical Engineering, Yamaguchi University

关键词: Drag Reduction;    Energy;    Power Saving;    Surfactant Additive;    Turbulence Control;    Distinct Heating Cooling System;   

DOI  :  10.1252/jcej.32.402

来源: Maruzen Company Ltd

【 摘 要 】

References(25)Cited-By(6)It is well known that the use of certain surfactants and counterions can cause drag reduction in pipe flow. This phenomenon can be applied to a district heating and cooling system. In such a system, however, heat transfer reduction correspondingly occurs as drag reduction does. This should be a major problem as far as heat transfer application is concerned. In our study in this regard, we focused on drag reduction in practical heat exchanger tubes and determined the effect of drag reduction caused by a surfactant solution of Ethoquad O/12. We used three rough tubes with different groove pitches and heights in our experiments to evaluate the effect of the roughness shape. From the results, we estimated the magnitude of the heat transfer reduction.

【 授权许可】

Unknown