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Thermal diffusivity of date paste

机译:枣糊的热扩散率

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摘要

Thermal diffusivity of date paste as a function of moisture content was experimentally determined using two transient methods, namely, the Dickerson and the heat penetration curve methods. Within the moisture content range 10.5 to 55.3 percent (wet basis), date paste thermal diffusivity fell within the ranges of 0.96 X 10~(-7) to 1.24~ X 10~(-7) and 0.98 X 10~(-7) to 1.57 X 10~(-7) m~2/s as determined by the Dickerson method and the heat penetration curve method, respectively. Thermal diffusivity values obtained from the Dickerson method were closer to values estimated using two popular empirical expressions. Experimental data were statistically fitted to yield two linear expressions allowing prediction of thermal diffusivity of date paste as a function of moisture content within the temperature and date paste moisture content ranges used.
机译:使用两种瞬态方法,即Dickerson方法和热渗透曲线方法,通过实验确定了日期酱的热扩散率随水分含量的变化。在水分含量为10.5至55.3%(湿基)的范围内,枣糊的热扩散率在0.96 X 10〜(-7)至1.24〜X 10〜(-7)和0.98 X 10〜(-7)的范围内分别通过Dickerson方法和热渗透曲线方法确定为1.57 X 10〜(-7)m〜2 / s。从Dickerson方法获得的热扩散率值更接近于使用两个流行的经验表达式估算的值。对实验数据进行统计拟合,以得出两个线性表达式,从而可以预测所用温度和日期糊剂水分含量范围内日期糊剂的热扩散率与水分含量的关系。

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