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首页> 外文期刊>International Journal of Heat and Mass Transfer >BOILING HEAT TRANSFER COEFFICIENTS INSIDE A VERTICAL SMOOTH TUBE FOR WATER/AMMONIA AND AMMONIA/LITHIUM NITRATE MIXTURES
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BOILING HEAT TRANSFER COEFFICIENTS INSIDE A VERTICAL SMOOTH TUBE FOR WATER/AMMONIA AND AMMONIA/LITHIUM NITRATE MIXTURES

机译：垂直光滑管内的沸腾传热系数，用于水/氨和氨/硝酸锂混合物

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摘要

This paper describes the experimental results obtained on the heat transfer in forced convective boiling for the water/ammonia and ammonia/lithium nitrate mixtures flowing upward in a vertical tube uniformly heated. The concentration range for both mixtures was 38-48 wt./100 Correlations were proposed to correlate the experimental local heat transfer coefficients with a mean deviation of±16 for the ammonia/lithium nitrate mixture and ±25/100 for the ammonia/water mixture. The results showed that the local heat transfer coefficients are strongly dependent on Bo for the ammonia/lithium nitrate mixture and more dependent on quality and 1/X_tt for the ammonia/water mixture at the analysed conditions. Comparing the heat transfer coefficient values for both mixtures, it was observed that the lowest values were obtained with the ammonia/lithium nitrate mixture.
机译：本文描述了在均匀加热的垂直管中向上流动的水/氨和氨/硝酸锂混合物在强制对流沸腾中传热的实验结果。两种混合物的浓度范围均为38-48 wt./100。建议将相关的实验传热系数与氨/硝酸锂混合物的±16平均偏差和氨/水混合物的±25/100的平均偏差相关联。结果表明，在所分析的条件下，氨/硝酸锂混合物的局部传热系数与Bo密切相关，而氨/水混合物的局部传热系数与质量密切相关，氨/水混合物的局部传热系数为1 / X_tt。比较两种混合物的传热系数值，可以发现氨/硝酸锂混合物的传热系数最低。

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