... 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...

... for saving on air-conditioning equipment and energy. Whereas until now uninterrupted operation was the only focus (and data centers were ready to spend any amount of resources to achieve it), the current economic climate has shifted the focus to energy conservation. A “green data center” is a new goal...

...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. 13 08 2007 06 05 2008 03 09 2008 air conditioning microchannel flow pipe flow refrigeration two-phase flow carbon dioxide microfin tube pressure drop low temperature two-phase One of the most common techniques...

... be modeled as simple air-conditioning units, for which a basic second-law analysis yields the following exergy loss: 11 Ψ ̇ d CRAC = m ̇ CRAC ( ψ ret − ψ sup ) − W ̇ CRAC The only remaining challenge then is to estimate the exergy loss in the rack units...

... 2006 heat exchangers friction computational fluid dynamics design engineering air conditioning aerodynamics louver fin round tube low-Re airflow louver interaction Louver-fin round-tube heat exchangers are widely used in residential and commercial air-conditioning systems...

... 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...