山东建筑大学学报2024，Vol.39Issue(2)：44-51,8.DOI:10.12077/sdjz.2024.02.006
浅圆仓不同运行方式对粮堆通风调温效果影响
The effect of different operation modes of squat silo on the ventilation and temperature regulation of grain stacks
摘要
Abstract
The squat silo has an extensive prospect in grain storage.The paper of ventilation and temperature regulation effect of conventional vertical ventilation system and new radial ventilation system can provide support for the actual grain storage process.In this paper,the grain type is soybean.The 14-day temperature regulation process of three different air ducts in squat silo under forward ventilation and reverse ventilation is numerically simulated by the finite volume method.The air flow and temperature distribution in the grain pile are obtained,and the ventilation cooling rate,uniformity and energy consumption are compared and analyzed.The results indicate that there is no ventilation dead corner in all ventilation modes,and the difference of ventilation modes leads to the difference of flow direction and vortex position.Under the positive and negative pressure form of vertical air ducts,there is no high temperature area in the squat silo for 7 days of ventilation,while the other two air ducts exhibit high-temperature areas.And there is no high temperature area in all working conditions for 14 days.Only when the air duct is radial,the cooling rate and final temperature of negative pressure ventilation are lower than those of positive pressure ventilation.The ventilation uniformity of radial air duct is better than the other two air ducts,and the uniformity of positive pressure ventilation is better than negative pressure ventilation.The energy consumption of positive pressure ventilation is generally lower than that of negative pressure ventilation.关键词
垂直通风/径向通风/降温通风/正负压通风/数值模拟Key words
vertical ventilation/radial ventilation/cooling and ventilation/positive and negative ventilation/numerical simulation分类
轻工纺织引用本文复制引用
杨开敏,杨泰,田华,王远成,刘家琦,李加斌..浅圆仓不同运行方式对粮堆通风调温效果影响[J].山东建筑大学学报,2024,39(2):44-51,8.基金项目
山东省高等学校科技计划项目(J16LG07) （J16LG07）
