COMPARISON BETWEEN CONVENTIONAL AND LOCAL COMPUTER ROOM AIR-CONDITIONING SYSTEMS IN DATA CENTER BY CFD TAKEUCHI J.(*), KURABUCHI T.(**), YOSHINO H.(***), LEE S.(**), INOUE Y.(****) (*) TONETS Corporation, Japan, Graduate School of Tokyo University of Science, Japan, (**) Tokyo University of Science, Japan, (***) TONETS Corporation, Japan, Tokyo City University, Japan, (****) Graduate School of Tokyo University of Science, Japan