| 张东霞；吕恩利；陆华忠；王广海；曾志雄.香蕉差压预冷冷却均匀度试验与分析[J].广东农业科学,2013,40(23):92-95 |
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香蕉差压预冷冷却均匀度试验与分析 |
| Test and analysis on cooling uniformity of banana in differential pressure pre-cooling |
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| DOI： |
| 中文关键词: 香蕉 差压预冷 温度 均匀性 |
| 英文关键词: banana differnetial pressure pre-cooling temperature homogeneity |
| 基金项目:国家科技支撑计划项目（2013BAD19B01）；广东省自然科学基金（S2012010010388） |
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| 中文摘要: |
| 为研究香蕉预冷时的冷却均匀度，搭建差压式香蕉预冷试验平台，以批量香蕉为试验物料，研究香蕉差压预冷冷却均匀度。通过Matlab软件的曲面拟合功能对预冷室中纵截面、中横截面的空气温度分布特性，以及中纵截面、中横截面香蕉果肉温度分布特性进行分析；再通过计算中纵截面、中横截面的香蕉果肉温度冷却均匀度，研究香蕉的预冷均匀性。研究显示，中纵截面香蕉果肉温度分布规律与预冷室中纵截面的空气温度分布规律相似，中横截面香蕉果肉温度分布规律与中横截面空气温度分布相似；中纵截面空气温度分布以及该截面的香蕉果肉温度分布均由前往后逐渐升高；中横截面空气温度分布及该截面香蕉果肉温度分布较为均匀，上层果肉温度高于下层果肉温度；中纵截面香蕉果肉温度冷却均匀度为滓=0.12，中横截面为滓=0.07。研究结果表明香蕉差压预冷冷却均匀性好，差压预冷适用于香蕉储运前的预冷。 |
| 英文摘要: |
| An experinmental platform for banana pre-cooling was established to analyze the cooling uniformity of banana. The air temperature uniformities of longitudinal section and cross section of the container were investigated respectively, as well as the temperature uniformity of the pulp of bananas loading at longitudinal and cross section areas,with software Matlab. Temperature uniformity of the pulp of bananas loading at longitudinal and cross section areas was calculated to reach the pre-cooling effect of banana. The result indicated that the pulp temperature of banana therein distribution of longitudinal section was similar to the air temperature in longitudinal section, both increased gradually from front to back; And the pulp temperature distribution of cross section was also similar to air temperature distribution in cross section, where upper pulp temperature was higher than the lower in cross section, which performed better temperatureuniformity than longitudinal section. Pulp temperature uniformities of longitudinal and cross section were 0.12 and 0.07,respectively. The research achievements indicated that the cooling uniformity of banana was excellent, and differential pressure pre-cooling was appropriated for banana. |
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