两种通风网络对房式仓通风效果影响的对比研究

COMPARATIVE STUDY OF TWO KINDS OF VENTILATION NETWORKS ON THE VENTILATION EFFECT OF THE WAREHOUSES

为解决传统“圭”字型通风网络的进风空气或熏蒸气体在垂直方向推进速度过慢的问题,提出了一种“圭”字型加垂直立管的新型通风网络,减小了通风方向上的流动阻力,缩短了空气和熏蒸气体等在粮堆内流动路径和时间,使空气和熏蒸气体等更容易从粮面溢出。通过数值模拟的方法对其通风效果进行研究,并与传统的“圭”字型通风网络进行对比分析。结果表明,新型通风网络在通风前期降温效果、保水性能和通风能耗方面均要优于传统的“圭”字型通风,该结果可以为房式仓通风网络的优化设计提供理论依据和技术参考。

In order to solve the problem that the intake air or fumigation gas of the traditional Gui-shaped ventilation network propelled too slowly in the vertical direction,this paper proposed a new type of ventilation network with Gui-shaped rentilation and vertical ducts,which reduced the flow resistance in the ventilation direction,and shortend the flow path and time of air and fumigation gas in the grain pile,and made the air and fumigation gas more easier to spill out from the grain surface.The ventilation effect was studied by numerical simulation method,and a comparative analysis was made with the traditional Gui-shaped ventilation network.The results show that the new ventilation network was better than the traditional Gui-shaped ventilation not work in early cooling effect,water retention performance and ventilation energy consumption in the first few days of ventilation.The results could provide theoretical basis and technical reference for the optimal design of the ventilation network of the warehouse.