果蔬差压预冷包装箱开孔大小的选择

Choice of Vent Hole Size of Fruit and Vegetable Canton in Pressure Pre-cooling

预冷速度和冷却均匀性是评价果蔬冷却效果的重要指标。分析了压差与风量、风速的关系,建立了果蔬差压通风预冷实验台,对黄金梨在不同开孔尺寸工况下的冷却过程进行了测试,分析了不同开孔大小对黄金梨预冷速度和冷却均匀性的影响。结果表明,开孔直径在45 mm左右为宜。

Cooling rate and cooling uniformity are important indexex,which is used to evaluate pressure pre-cooling effects of fruit and vegetables.The relations between pressure difference and air flowrate,have been analized.Pressure pre-cooling experimental device is set up and experimental investigations of golden-pear pre-cooling process have been conducted with different the vent hole size.The effects of different vent hole size on cooling rate and cooling uniformity have been analyzed.Results show that the vent ...