社団法人日本機械学会 Acta Medica Okayama 0387-5016 63 608 1997 冷熱エネルギー輸送用界面活性剤添加低温水の管内流動抵抗と熱伝達特性 208 215 EN Hideo Inaba Naoto Haruki Investigation of characteristics of cold water pipe flow with surfactant is important to develop a cold heat energy transport system. Both flow drag and heat transfer reductions by the Toms effect occur due to a rod-like micell structure of surfactant. When a counter-ion (sodium salicylate) was added to water solution containing of dodecyltrimethylammonium chloride (DATC) surfactant in the present study, the rod-like micell structure of DTAC was formed by connection of spherical micells of DTAC. Moreover, the reduction characteristics of flow resistance and heat transfer were influenced by the amount of the counter-ion. Useful nondimensional correlative equations for flow resistance and heat transfer are derived in terms of various nondimensional parameters. No potential conflict of interest relevant to this article was reported.