Impact of integrated hot water cooling and desiccant-assisted evaporative cooling systems on energy savings in a data center
- Authors
- Kim, Min-Hwi; Ham, Sang-Woo; Park, Jun-Seok; Jeong, Jae-Weon
- Issue Date
- Dec-2014
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Data center; Hot water cooling; Liquid desiccant; Evaporative cooling
- Citation
- ENERGY, v.78, pp.384 - 396
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENERGY
- Volume
- 78
- Start Page
- 384
- End Page
- 396
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/158504
- DOI
- 10.1016/j.energy.2014.10.023
- ISSN
- 0360-5442
- Abstract
- The primary objective of this paper is to propose the integration of a hot water cooling system with a desiccant-assisted evaporative cooling system for air conditioning a data center. The feasibility of the integrated system is analyzed by a detailed energy simulation for a model data center by using TRNSYS (transient system simulation) 16 with a commercial equation solver program. The energy saving potential of the proposed system is evaluated by comparing it to a conventional air handling system with an air-side economizer serving the model data center. The results show that the proposed system saves more than 95% of the peak power demand and 84% of annual operating energy consumption with respect to the conventional air conditioning system for the data center. This advantage in energy savings is primarily obtained by the use of water-side free cooling in the hot water cooling system and the evaporative cooling effect enhanced by the liquid desiccant system in the air-side supply. Fan energy savings caused by reduced air flow in the proposed system also contributes to the reduction in operating energy.
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