含有促进传热传质添加剂的溴化锂水溶液的表面张力

采用Wilhelmy平板法,对未加入添加剂和加入添加剂(4-methyl-2-pentanol, 2-ethyl-1-butanol, 1-hexanol, 2,4-dimethyl-3-pentanol, 4-heptanol, 2-heptanol, 1-heptanol, 2EH)的溴化锂水溶液的表面张力进行了测量.通过与相关添加剂对溴化锂溶液吸收水蒸气速度影响的测试实验结果进行关联分析,结果表明,对于酒精类添加剂,在含碳原子数相同的情况下,使溶液表面张力降低越大的添加剂使溶液吸收水蒸气的速度越快.

Surface tension of LiBr Aqueous Solution with Heat/mass Transfer Enhancement Additives

Surface tension of 62 wt% lithium bromide solution without and with several six-carbon, seven-carbon and eight carbon alcohol additives such as 4-methyl-2-pentanol, 2-ethyl-1-butanol, 1-hexanol, 2,4-dimethyl-3-pentanol, 4-heptanol, 2-heptanol, 1-heptanol, and 2EH were measured by Wilhelmy plate method. Compared with the experiment results of absorption of water vapor into lithium bromide solution using a simple stagnant pool absorber for the same number carbon's additives, it is shown that the lower the surface tension of aqueous LiBr solution with an additive, the better the effect of absorption enhancement by the corresponding additive.