| 二元液体混合物的沸腾传热 |
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| 引用本文： | 林纪方,楊友麒,孔繁果,王家祥,邢贵臣. 二元液体混合物的沸腾传热[J]. 化工学报, 1959, 10(2): 137-146 |
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| 作者姓名： | 林纪方 楊友麒 孔繁果 王家祥 邢贵臣 |
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| 作者单位： | 大连工学院,大连工学院,大连工学院,大连工学院,大连工学院 |
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| 摘 要： | 关于二元液体混合物沸腾给热的初步研究结果已经介绍过,但当时对苯-甲苯系统只做了三组数据,还看不出其规律性。在本文中,虽然还是用酒精-水,及苯-甲苯两组混合物,但组成变化较多,同时除常压下操作外,也做了不同程度减压下的沸腾给热。对组成和压力对给热系数的影响作了探讨,最后并以准数方程式来归纳实验结果,提出可供计算用的经验公式及准数方程式。
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THE BOILING HEAT TRANSFER COEFFICIENTS OF BINARY LIQUID MIXTURES |
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| LIN CHI-FANG,YANG Yu-CHE AND KONG FAN-GUO. THE BOILING HEAT TRANSFER COEFFICIENTS OF BINARY LIQUID MIXTURES[J]. Journal of Chemical Industry and Engineering(China), 1959, 10(2): 137-146 |
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| Authors: | LIN CHI-FANG YANG Yu-CHE AND KONG FAN-GUO |
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| Affiliation: | LIN CHI-FANG,YANG Yu-CHE AND KONG FAN-GUO (Dairen Institute of Technology) |
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| Abstract: | The single horizontal tube evaporator we used for investigation, being described in a preceeding paper[1], was modified with a vacuum system in order to operate the boiling experiments under diminished pressures.Binary liquid mixtures employed are:-(1) Water-ethanol; (2) Benzene-toluene.Range of experiments:-(1) Heat load, 4 = 4,000 40,000 kcal/m2:hr:(C)(2) Operating pressure, p = 200 760 mm. Hg.(3) Compositions of binary liquid mixtures. A) Benzene % in benzene-toluene system:-0%, 12%, 25%, 50%, 75%, 88%, 100%, B) Ethanol % in vvater-ethanol system:-5%, 25%, 60%, 91.8%.The boiling beat transfer coefficients of water under various pressures were examined as preliminary experiments, the results may be correlated as follows:-a=4.0 p0.2 q0.69 For pure benzene, we obtained the following-empirical formula,-and for pure toluene,- The heat transfer coefficients of boiling mixtures of different compositions, and under different pressures were correlated with dimensionless groups suggested by ; we propose that his original equation, can be used for binary liquid mixtures in the following modified form,-with error less than ±10%.We also correlated our experimental results with C. C.equation,-for binary liquid mixtures, we propose the following modified form, with error around (+)10%. |
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