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番茄果实热导率测试装置参数实
引用本文:张敏,钟志友,赵惠忠,张雷杰,杨乐,刘艳玲.番茄果实热导率测试装置参数实[J].农业机械学报,2009,40(Z1):93-96.
作者姓名:张敏  钟志友  赵惠忠  张雷杰  杨乐  刘艳玲
作者单位:1. 上海海洋大学食品学院,上海,201306
2. 上海理工大学城市建设与环境工程学院,上海,200093
基金项目:国家自然科学基金资助项目,上海市教委重点建设工程项目 
摘    要:微热探针法测试热导率系统已被广泛应用于食品材料热导率的测试中.但是,由于实验条件或实验设备的限制,基于理想的线热源瞬态模型测量原理得到的结果会产生某些测试误差.针对测试误差,从探针输入电压、加热时间和样品的径向尺寸等装置操作参数的选择着手,通过实验,得到装置系统测定中输入电压的最佳值为2.5~6.5V、加热时间最佳值为20~50s.最后通过实际测试,得到了番茄果实在不同成熟阶段的热导率变化规律.

关 键 词:番茄  热导率  测试装置  操作参数

of the Parameters of Designed Apparatus for Determination of Thermal Conductivity of Tomato Fruits
Zhang Min Zhong Zhiyou Zhao Huizhong Zhang Leijie Yang Le Liu Yanling.of the Parameters of Designed Apparatus for Determination of Thermal Conductivity of Tomato Fruits[J].Transactions of the Chinese Society of Agricultural Machinery,2009,40(Z1):93-96.
Authors:Zhang Min Zhong Zhiyou Zhao Huizhong Zhang Leijie Yang Le Liu Yanling
Institution:1.College of Food Science and Technology;Shanghai Ocean University;Shanghai 201306;China 2.College of Urban Construction and Environment Engineering;University of Shanghai for Science and Technology;Shanghai 200093;China
Abstract:The thermal conductivity probe system has been used in food.However,since the probe system is derived from an idealized transient heat transfer model,there are inevitable differences between the real probe and the theoretical model.The test error resulted by some experimental operating parameters including input voltage,heating time of thermal probe and size of sample was studied.The best values of input voltage,heating time of thermal probe and size of sample were obtained to minimize the test error.The op...
Keywords:Tomato fruit  Thermal conductivity  Measurement apparatus  Operating parameters  
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