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Experimental and numerical investigations of heat transfer characteristics of vertical falling film heat exchanger in data center cabinets.
- Source :
-
International Communications in Heat & Mass Transfer . May2023, Vol. 144, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- To reduce the energy consumption in data centers, this paper proposes a novel structure that integrates a cabinet with a vertical falling film heat exchanger in data center to perform natural evaporative cooling. First, an experimental setup is built to verify the heat and mass transfer characteristics of a falling film in a vertical tube and to obtain the mass transfer coefficient 0.05. Then, the characteristics of tube length direction and heat and mass transfer are analyzed using compiled user-defined functions for different parameters of moist air and water in the tube. The maximum growth rates of heat transfer coefficient and mass transfer rate are 67.65% and 55.23% at increasing inlet moist air Re ma,i , respectively. Finally, the heat transfer characteristics of the falling film heat exchanger with staggered and in-line are compared for inlet air velocities in the range of 1ā3.5 m·sā1. The corresponding results demonstrate that the heat flow rate, heat transfer coefficient, and overall heat transfer performance P EC of the staggered are better than those of the in-line as the inlet air velocity of the heat exchanger continues to increase. The maximum P EC of the staggered heat exchangers is 40.07% higher than that of the in-line heat exchangers. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 07351933
- Volume :
- 144
- Database :
- Academic Search Index
- Journal :
- International Communications in Heat & Mass Transfer
- Publication Type :
- Academic Journal
- Accession number :
- 163425727
- Full Text :
- https://doi.org/10.1016/j.icheatmasstransfer.2023.106742