The research aimed to investigate the effect of ventilation tube spacing on thermal performance of cold storage floor antifreezing ventilation system. A steady three-dimensional mathematical model of heat transfer was set up. The heat-transfer model was simplified reasonably. The definite conditions of the heat-transfer model were confirmed according to the heat-transfer process. The temperature field of this system were simulated and calculated by Phoenics under different kinds of working conditions, such as without circulating the ventilation system, with different tube spacing. The results showed that the effect of using mechanical antifreezing ventilation to cold storage floor was better. They also indicated the effect of ventilation tube spacing was greater on thermal performance of cold storage floor antifreezing ventilation system.%为了研究通风管间距对冷库地坪通风防冻系统传热性能的影响程度,建立了三维稳态传热数学模型,对传热模型进行了合理的简化,根据系统的传热过程确定了传热模型的定解条件,利用Phoenics软件对通风系统未启动和不同通风管间距下的传热模型分别进行了数值模拟分析.结果表明,对冷库地坪采取机械通风防冻的效果良好,通风管间距对冷库地坪通风防冻系统的传热性能有较大影响.
展开▼
