%0 Journal Article %T heat transfer enhancement using al2o3/water nanofluid in a two-phase closed thermosyphon %A Noie Baghban, Seyed Hossein %A Zeinali Heris, Saeed %A , %A Nowee Baghban, Seyed Mostafa %J International Journal of Heat and Fluid Flow %@ 0142-727X %D 2009