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本文以某地下空间的通风系统为例,对未进行阻抗调节的动力集中式通风系统、设调节风阀调节的动力集中式通风系统、动力分布式通风系统的运行工况进行了模拟计算,并对比分析了系统阻力不平衡度、流量偏离系数(即稳定性)以及系统能耗。研究结果表明:动力分布式通风系统能够大大地降低系统水力失调度以及流量偏离系数,提高系统的稳定性。相对动力集中式通风系统而言,动力分布式通风系统在实际运行时无需调节,其节能率可达20%~30%。
In this paper, a ventilation system in an underground space is taken as an example to simulate the operating conditions of a power centralized ventilation system without adjustable impedance, a power centralized ventilation system with adjustable air damper and a dynamic distributed ventilation system. Comparative analysis of the system resistance imbalance, flow deviation coefficient (ie, stability) and system energy consumption. The results show that the dynamic distributed ventilation system can greatly reduce the system hydraulic imbalance and flow deviation coefficient, and improve the stability of the system. Relative to the power of centralized ventilation system, power distribution ventilation system in the actual operation without adjustment, the energy saving rate of up to 20% to 30%.