一般型通风网求解新方法

讨论了一般型通风网的求解问题,建立了由含有B个方程组成的一般型通风网求解数学模型.在B个未知量中.未知风压分支为L(亦为固定风量分支),未知风量分支B—L(B为通风网分支).在通风网中.调节装置的位置由调节系数矩阵Cy]中L列非零元素确定.改变矩阵Cy]则可获得不同的风流控制方案.介绍了该模型的Newton-Raphson计算方法,在此基础上运用模型进行了自然分风,风量调节和通风机工况点优化的计算,并给出了算例.

Study of New Method of Solving General Type Ventilation Network

This paper discusses problems of solving general type ventilation network ,eslablishes mathematical model of solving general type ventilation network.It is made up of B equations which contain B unknown quantity.In B unknown quantity ,unknown wind pressure branch is L, position of adjusting devices is B-L.In the ventilation network position of adjusting devices is located by L column nonzero elements of accommodation coefficient matrixCij].Chang-ing the matrixCij] can gain differential schemes of controlling wind current.The paper recommends Newton-Raphson calculation method of the model .On this basis and using the model ,we carry out calculation of natural ventilation ,wind quantity adjustment and optimizing operating mode of ventilator ,and gave example of calculation.