Abstract
The turbulent flow drag and heat transfer coefficients can be reduced dramatically by adding small amounts of drag-reducing additive to flowing water. The surfactant solutions including rod-like and cord-like micelles shows the Non-Newton characteristics and the flow drag reduction effect in a turbulent pipe flow. In this study, TOHO-DRC6B (main component: Oleyl Dihydoroxy Ethyl Amine Oxide, ODEAO, non-ionic surfactant) was selected as the flow drag reduction additive. ODEAO is added to propylene glycol (PG) solution. From the flow resistance and heat transfer experiment results, the flow resistance and heat transfer coefficient of the PG solution with ODEAO in straight circle pipe were markedly reduced as compared with that of propylene glycol solution as solvents.
