Simulation Test on Cooling and Fire Suppression with Liquid Nitrogen in Computer Room of Data Center

Fire

article

Jianbing Meng¹  Tingrong Wang²  Guanghua Li²  Jianhong Kang² 

[1] School of Safety Science and Engineering, Anhui University of Science & Technology;Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology

关键词: liquid nitrogen;    data center;    fire suppression;    cooling;   

DOI  :  10.3390/fire6030116

学科分类：环境科学（综合）

来源: mdpi

【 摘 要 】

With the rapid development of worldwide computer data center construction, the reliability requirements of the fire-fighting system for data center rooms are also increasing. By using the self-designed simulation platform of liquid nitrogen spray, this paper studies the liquid nitrogen cooling process in the initial heating stage of a computer data center room fire and the liquid nitrogen extinguishing effects for common combustible materials, revealing the feasibility of applying liquid nitrogen to the fire extinguishing system for data center room. The results show that the cooling and inerting effects with quarter sector fan-shaped 6520 spray nozzle are the best among seven types of spray nozzles, the relative temperature changes by more than 50% within 5 min, and the oxygen concentration in the test space drops below 10%. Compared with optical fiber, the ignition range of uninterruptible power supply com-bination during combustion is relatively small. Liquid nitrogen has a significant fire-extinguishing effect on two combustible materials, which can successfully extinguish optical fiber and UPS within 3 min and 2 min, respectively.

【 授权许可】

CC BY