Search Results - subject:"Free cooling"

Energy and exergy evaluation of a multiple-PCM thermal storage unit for free cooling applications

Mosaffa, A.H.; Garousi Farshi, L.; Infante Ferreira, C.A.; … - In: Renewable Energy 68 (2014) C, pp. 452-458

, where the cold is stored in phase change materials (PCMs). Free cooling is a concept developed for air conditioning … the day. In this work, energy and exergy analyses are performed for a free cooling system using a LHTS unit employing …

Persistent link: https://www.econbiz.de/10010803999

Free cooling of data centers: A review

Zhang, Hainan; Shao, Shuangquan; Xu, Hongbo; Zou, Huiming; … - In: Renewable and Sustainable Energy Reviews 35 (2014) C, pp. 171-182

the total consumption of data centers due to the inefficient cooling system. Free cooling is an effective solution for … reducing the power consumption of cooling systems. This paper reviews the advancements of data center free cooling mainly … focusing on configuration features and performances. Three kinds of free cooling methods, airside free cooling, waterside free …

Persistent link: https://www.econbiz.de/10010776818

Parametric study on the advantages of weather-predicted control algorithm of free cooling ventilation system

Medved, Sašo; Babnik, Miha; Vidrih, Boris; Arkar, Ciril - In: Energy 73 (2014) C, pp. 80-87

reduced by low-exergy free-cooling systems, which use natural processes, like evaporative cooling or the environmental cold of … operation of free-cooling system is needed only for the transport of the cold from the environment into the building. Because … the natural cold potential is time dependent, the efficiency of free-cooling systems could be improved by introducing a …

Persistent link: https://www.econbiz.de/10011055947

Heat pipe based thermal management systems for energy-efficient data centres

Jouhara, Hussam; Meskimmon, Richard - In: Energy 77 (2014) C, pp. 265-270

, commercial and consumer remote data storage. The concept of free cooling and its potential application in data-centres is then … results indicate potential energy savings of up to 75% are achievable when utilising heat pipe based free cooling systems. …

Persistent link: https://www.econbiz.de/10011077727

Simulation of a temperature adaptive control strategy for an IWSE economizer in a data center

Durand-Estebe, Baptiste; Le Bot, Cédric; Mancos, Jean … - In: Applied Energy 134 (2014) C, pp. 45-56

Nowadays, with the constant evolution of Information Technology (IT) equipments, the energy consumption of data center over the world becomes a major concern. In 2011 the ASHRAE Technical committee 9.9 (TC9.9) issued important guidelines concerning server temperature and hygrometric environment...

Persistent link: https://www.econbiz.de/10011041027

Active free cooling optimization with thermal energy storage in Stockholm

Chiu, Justin N.W.; Gravoille, Pauline; Martin, Viktoria - In: Applied Energy 109 (2013) C, pp. 523-529

Latent heat thermal energy storage (LHTES) integrated active free cooling stores night time cold and serves as heat … to be met, a tradeoff to indoor comfort level needs to be considered to reach the concept of sustainable free cooling. We … here provide a novel techno-economic feasibility study of active free cooling LHTES in Stockholm as well as new insights to …

Persistent link: https://www.econbiz.de/10010678778

Potential of air-side economizers for data center cooling: A case study for key Australian cities

Siriwardana, Jayantha; Jayasekara, Saliya; Halgamuge, … - In: Applied Energy 104 (2013) C, pp. 207-219

The provision of low cost cooling is challenging due to high energy costs and increasing heat dissipation volumes from data centers. In Australia, with the introduction of emissions trading scheme, the cost of energy with carbon origin is expected to increase. In order to reduce cooling costs,...

Persistent link: https://www.econbiz.de/10010688063

Phase change material (PCM) storage for free cooling of buildings—A review

Waqas, Adeel; Ud Din, Zia - In: Renewable and Sustainable Energy Reviews 18 (2013) C, pp. 607-625

. Free cooling of buildings may be seen as an alternate to compressor based air conditioning systems used for the buildings …. In free cooling, nighttime cold is accumulated in storage material and extracted when needed. Latent heat storage using … phase change materials (PCMs) can be used for free-cooling purposes due to their high storage density. In free cooling …

Persistent link: https://www.econbiz.de/10011049395

Geocooling potential of borehole heat exchangers' systems applied to low energy office buildings

Pahud, D.; Belliardi, M.; Caputo, P. - In: Renewable Energy 45 (2012) C, pp. 197-204

The potentiality of geocooling (i.e. free cooling) with borehole heat exchangers is analysed for low energy office …

Persistent link: https://www.econbiz.de/10010806680

Weather-predicted control of building free cooling system

Dovrtel, Klemen; Medved, Sašo - In: Applied Energy 88 (2011) 9, pp. 3088-3096

In this paper, the optimization of a weather-predicted free cooling system combined with heat storage is shown. The … optimized based on free cooling energy and the required temperature parameters of a building’s indoor environment, using …

Persistent link: https://www.econbiz.de/10011040718