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- Title
Energy-Efficient Mode Transition Strategies of Data Center Cooling Systems.
- Authors
Dong WEI; Baiyu LI; Yancai SHI; Zhuangju LI
- Abstract
Energy savings potential of operating in economizer modes in certain climates makes it attractive for use in data center cooling systems. Operating in economizer modes saves energy by utilizing outdoor air during colder months of the year allowing refrigerant-based cooling components like chillers to be shut off or operated at a reduced capacity. Although the concept of economizer modes is recognized throughout the data center industry, little has been done to study mode transition strategies and its energy saving effect. In this paper, the mode transition strategies based on prediction approach is presented, which enable the economizer if the chilled water return temperature is greater than the predicted heat exchanger leaving water temperature (PHXLWT) plus threshold value. The transition strategies were implemented on a TRNSYS-MATLAB test plant. Results show that the proposed approach exhibits more energy-efficient compared to conventional constant wet-bulb temperature method, and the free cooling run time can be extend to about 120% with the total energy consumption slashed by 7%.
- Subjects
SERVER farms (Computer network management); COOLING systems; ECONOMIZERS (Heat recovery)
- Publication
International Journal of Simulation -- Systems, Science & Technology, 2016, Vol 17, Issue 37, p26.1
- ISSN
1473-8031
- Publication type
Article
- DOI
10.5013/IJSSST.a.17.37.26