通风管管径对冷库地坪通风防冻系统传热性能影响的研究

Effect of ventilation tube diameter on heat transfer of cold storage floor antifreezing ventilation system

为研究通风管管径对冷库地坪通风防冻系统传热性能的影响程度,建立三维稳态传热数学模型。对传热模型进行合理的简化,根据系统的传热过程确定传热模型的定解条件,利用PHOENICS软件对通风系统在不同通风管管径下的传热模型进行数值模拟分析。结果表明:通风管管径对冷库地坪通风防冻系统的传热性能有较大影响,指出通风管间距为1.5 m时的适当管径。

In order to investigate the effect of ventilation tube inside diameter on heat transfer of cold storage floor antifreezing ventilation system, a steady three-dimensional mathematical model of heat transfer was established. The heat-transfer model was reasonably simplified. The calculational conditions of the heat-transfer model were defined according to the heat-transfer process. The temperature fields of this system were simulated and calculated by PHOENICS under different tube inside diameter. The results showed that the effect of ventilation tube inside diameter was greater on thermal performanee of cold storage floor antifreezing ventilation system. The proper tube inside diameter was pointed out for the cold storage floor with 1.5m tube spacing.