... sensor data inside the data centers to help predict the data center temperature field as a function of the air flow rates of computer room air conditioning (CRAC) units. The approach is demonstrated through application to an operational data center of 102.2 m 2 (1100 square feet) with a hot and cold...

... computational fluid dynamics/heat transfer and refrigeration and air-conditioning for over 25 years. However starting from his Ph.D. ‘A numerical study of the effects of fluid properties on natural convection’ awarded in 1984, one of his main passions has been natural convection and therefore the focus...

... there by placing more perforated tiles. If that fails, an extra air-conditioner is installed in the hope of removing the hot spots. It is estimated that the amount of cooling air used in most data centers is 2.5 times the required amount. So, there is a good opportunity for saving on air-conditioning equipment...

...Akihiko Horibe; Syahrul Husain; Hideo Inaba; Naoto Haruki; Ping Tu An experimental investigation of a fluidized bed with multiple cooling pipes was conducted to study adsorption characteristics of a new organic sorbent desiccant material (HU300P) for a new air conditioning system. The mass ratio...

... in refrigeration system and air-conditioning systems. Lockhart and Martinelli ( 5 ) presented the data for isothermal two-phase, two-component flow in pipes with various diameters and proposed the two-phase multiplier type pressure drop correlation graphically. The authors introduced the parameter X...

.... , 2004 , “ Energy Efficiency Indicators for Data Centers ,” International Conference on Improving Energy Efficiency in Commercial Buildings , Frankfurt, Germany . Norota , M. , Hayama , H. , Enai , M. , and Kishita , M. , 2003 , “ Research on Efficiency of Air Conditioning System...

.... 11c ); and Fin D is the tested fin design with α = 37.0 deg (Fig. 11d ). Fin D is the baseline for comparison. Special attention was paid to Case 1, which is typical for low-noise air conditioning applications. The flow patterns were examined for the four fin designs. Fin A shows pure...

... as the objective function. The running cost is determined using different unit costs for the pressure component of exergy E ˙ Δ P and the thermal component of exergy E ˙ Δ T , which are evaluated separately. The ratio of the two unit costs has been calculated for an air-conditioning application in which...