Planning of Air-Conditioning and Circulation Systems for Data Center

Hirofumi HAYAMA  Masamichi ENAI  Taro MORI  Manabu KISHITA  

IEICE TRANSACTIONS on Communications   Vol.E87-B   No.12   pp.3443-3450
Publication Date: 2004/12/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Section on the 25th International Telecommunications Energy Conference (INTELEC'03))
computer room,  air conditioning,  forced air cooling,  energy conservation,  

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This development proposes a highly efficient air-conditioning airflow system for a computer-machine room having high-heat-generating equipment using forced-air cooling. The proposed system recirculates room air in the area surrounding equipment back to the cooling supply air supplied from a double floor. The recirculated air is therefore used as cooling air for computers. This system enables the blowing temperature difference of air-conditioner units to be increased, blower capacity to be decreased, and overall efficiency of air-conditioner units to be increased. Here, we have proposed an air-conditioning airflow system that decreases the amount of cooling supply air while ensuring adequate air ventilation for equipment using forced-air cooling, and a design method for achieving this system.