通风系统可靠性稳定性及灵敏性数学模型

Mathematical models for reliability stability and sensitivity of ventilation system

从通风系统分析的角度出发,对通风系统可靠性、稳定性和风路灵敏性的数学模型及相互关系进行了研究。可靠性用来衡量通风系统保持其通风参数的性能,稳定性是衡量风量波动大小的,二者既存在联系又有一定的区别,风路灵敏性反映了通风系统中风路风阻的变化对其它风路及整个系统的影响,它与通风系统可靠性和稳定性都有密切的联系。在通风系统稳定性定量分析方面,提出了基于灵敏度的计算方法,同时分析了角联风路的存在对通风系统的影响。

From the point of view of analysis of ventilation system, the mathematical models and the relationships between reliability、stability and airway sensibility of a ventilation system are studied. Reliability can measure the ability of a ventilation system to keep ventilation parameters, and stability is used to measure the fluctuation range of air quantity, while there are relations and differences between them. Airway sensibility is used to measure the influence level of the variation of air resistance of an airway to other airways and to the ventilation system, which has close relations with reliability and stability of the ventilation system. At the aspect of the quantitative analysis of a ventilation system, a sensitivity-based computing method is put forward, and the influence of the existence of diagonal branches on a ventilation system is also analyzed.