Calculation of tunnel ventilation considering influence of random wind
The current ventilation calculation in tunnels is conservative,often requiring more fans to be turned on,resulting in serious energy waste.This paper proposes a ventilation calculation method for tunnels considering the influence of random natural wind.Introducing wind frequency into the calculation of tunnel ventilation,two representation methods for wind frequency inside the tunnel are pointed out,namely discrete wind frequency distribution and Weibull wind frequency distribution.The scale coefficient A and shape coefficient K in the Weibull wind frequency distribution are calculated using the minimum error approximation algorithm.Through the example,it can be concluded that the ventilation volume considering the random wind at the inlet is 37.8%more than that without considering the random wind,indicating that considering the influence of random wind can reduce the number of fan openings.
NETL
NSTL
万方数据
