送风机;加压送风机
Smoke spreading, temperature field and visibility in the stairwell were compared under the three ventilation circumstances. The simulated result shows that the circumstance that both windows and forced draught blower were opened can reach the request of fire safety.
分析比较了三种通风条件下楼梯间内烟气的蔓延、温度场和能见度的情况,模拟结果表明既全开窗又开加压送风机的情况符合了火灾安全的要求。
Based on the analysis of main noise source, frequency spectrum and noise characteristic of the forced draught blower, using the control theory of the noise, we have designed and implemented the noise control scheme and reached the anticipated result.
在分析了送风机主要噪声源及频谱、噪声特性的基础上,应用噪声控制理论,设计并实施了噪声控制方案,达到了预期的治理效果。
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