Optimal design of a novel dry coal shed for ventilation,dust suppression and load reduction
The use of porous gables can effectively satisfy the ventilation and dust suppression requirements of novel dry coal shed.Moreover,it may lead to a certain load reduction effect on the wind load of dry coal shed.Taking the novel dry coal shed in the coal yard of a power plant as an example,through wind tunnel test and CFD simulation,the influences of dry coal shed gable permeability on natural ventilation rates,dust suppression rates and extreme wind loads were studied in this paper.The design guidelines and optimal parameters of gable permeability were determined.The results show that,compared to solid gables,when the permeability of the gable is 30％,the natural ventilation rate increases from 0.7 times per hour to 2.0 times per hour.Compared to open gables,the dust suppression rate improves from 56％to 80％.The minimum wind pressure coefficient at the center and edge of the roof decreased by 20％,and the minimum wind pressure coefficient on the gable decreased by about 70％.The new type of porous gable dry coal shed can greatly reduce the construction and energy consumption costs while ensuring the structural safety and design practicality.
万方数据
维普
