数据中心封闭热通道模块间防排烟系统优化设计研究
Study on optimal design of smoke evacuation systems of closed hot aisle modular rooms in data centers
摘要：
封闭热通道模块间在中国数据中心项目中的应用比例正在逐步扩大。基于建筑面积、空间利用与成本控制的考虑，在增加机柜功率和密度的同时，精密空调需要采用双侧送风的形式。由于机房面积的增大，机房容积超过了气体灭火最大保护容积。因此，采用预作用式喷淋系统与排烟系统结合的消防设计形式。数据中心的消防重点在于早期预警、早期处置和科学排烟排热，其中，防排烟系统的设计至关重要。本研究主要采用工程设计实例与数值模拟相结合的方式，对比了不同排烟口布置、补风形式、补风口布置等因素对排烟效果的影响，提出了不同于传统设计方法的、以消防安全为目标的封闭热通道模块间防排烟系统设计方案，数值计算结果显示具有良好的烟控效果。
Abstract：
The proportion of closed hot aisle modular rooms used in data center projects in China is gradually expanding. Based on the consideration of floor space utilization and cost control, the increase in cabinet power and density has led to the need for precision air conditioning in the form of dual-side air supply. Due to the increase in the area of the server room, the maximum protection volume of gas fire extinguishing is exceeded. Therefore, the fire protection design form of a pre-action sprinkler system combined with smoke exhaust systems is adopted. The focus of fire protection in the data center is on early warning, early disposal and scientific smoke and heat exhaust, among which the design of a smoke exhaust system is crucial. This study mainly adopts the combination of engineering design examples and numerical simulations to compare the effects of different smoke outlet arrangement, replenishing air form, replenishing air inlet arrangement and other factors on the smoke exhaust effect, and proposes a design scheme of closed hot aisle modular room smoke exhaust system with fire safety as the goal, which is different from the traditional design method. The numerical calculation results show a good smoke control effect.
Keywords:datacenter;closedhotaisle;modularroom;precisionairconditioning;smokepreventionandexhaust;largemodularroom;firedynamicsimulation