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首页> 外文期刊>International Journal of Refrigeration >Absorption of water vapour into lithium bromide-based solutions with additives using a simple stagnant pool absorber
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Absorption of water vapour into lithium bromide-based solutions with additives using a simple stagnant pool absorber

机译：使用简单的停滞池吸收器将水蒸气与添加剂一起吸收到溴化锂基溶液中

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摘要

Absorption of water vapor into the 50 mass % lithium bromide solution with four eight-carbon alcohol additives such as n-octanol, 2-octanol, 3-octanol, and 2-ehtyl-1-hexanol were investigated by using a simple stagnant pool absorber. Foursolutions of the 60 mass % lithium bromide + water, 68 mass % lithium bromide + ethylene glycol + water (LiBr/HO(CH{sub}2) {sub}2OH= 4.5 by mass), 60 mass % lithium bromide + lithium iodide + water (LiBr/Lil = 4 by mole), and 70 mass % lithium bromide +zinc chloride + water (LiBr/ZnCl{sub}2= 1 by mass) containing the 2-ethyl-1-hexanol additive were also considered to examine the additive effect on mass transfer of water vapor into the different types of absorbents. The experimental apparatus could beused with good confidence and accuracy particularly for studying mass transfer enhancement over the effective range of additive concentration which, in this work, is mostly between 10 and 500 ppm. A vigorous interfacial turbulence was observed duringabsorption process using additives. The water vapor absorption rate remarkably increased with increasing the additive concentrations up to about 200 ppm and then stopped increasing above 200 ppm for all the systems considered. The onset additiveconcentrations for enhancing mass transfer were located between 5 and 8 ppm for all systems except two systems of the 50 mass % lithium bromide solution with 3-octanol and 70 mass % lithium bromide + zinc chloride solution with 2ethtyl-i-hexanol for which the corresponding concentrations were 2.5 and 35 ppm, respectively.
机译：通过使用简单的滞留池吸收剂，研究了水蒸气被四种辛酸，2-辛醇，3-辛醇和2-戊基-1-己醇等四种八碳醇添加剂吸收到50质量％溴化锂溶液中的过程。 。 60质量％的溴化锂+水，68质量％的溴化锂+乙二醇+水（LiBr / HO（CH {sub} 2）{sub} 2OH ＝ 4.5质量％），60质量％的溴化锂+碘化锂的四种溶液。还认为+水（LiBr / Lil ＝ 4，摩尔）和70质量％溴化锂+氯化锌+含有2-乙基-1-己醇添加剂的水（LiBr / ZnCl {sub} 2 ＝ 1质量）。考察了水蒸气向不​​同类型的吸收剂中传质的附加影响。该实验设备可以具有良好的置信度和准确性，特别是用于研究添加剂浓度有效范围内的传质增强，在这项工作中，该浓度大部分在10至500 ppm之间。在使用添加剂的吸收过程中，观察到剧烈的界面湍流。对于所有考虑的系统，随着添加剂浓度的增加，水蒸气吸收率显着增加，直至约200 ppm，然后停止增加至200 ppm以上。对于所有系统，用于提高质量传递的起始添加剂浓度位于5至8 ppm之间，除了两个系统分别为：50质量％的溴化锂溶液和3-辛醇，以及70质量％的溴化锂和氯化锌溶液和2乙炔基-1-己醇。相应的浓度分别为2.5和35 ppm。

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