This article presents values of heat transfer coefficients at pool boiling of aqueous solution of lithium bromide on smooth and fin tubes. The experimental studies were performed under conditions typical of absorption chiller with single-stage desorption. More exactly, the condensation pressure was about 7.8–8.5 kPa, and the concentration of lithium bromide solution was 60–61 wt%. The outer diameter of the smooth and fin tubes was 16.0 mm; the inner diameter was 12.0 mm. The surface roughness factor of the fin tubes ranged from 2.7 to 6.0. The studies have shown that for fin tubes the heat transfer coefficient reduced to a surface unit is up to 30 percent higher as compared with a smooth tube.

中文翻译：

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单级溴化锂吸收式冷却器中增强表面上溴化锂水溶液的解吸

本文介绍了在光滑管和翅片管上溴化锂水溶液的池沸腾过程中的传热系数值。在具有单级解吸的吸收式冷却器的典型条件下进行了实验研究。更准确地说，冷凝压力约为7.8-8.5 kPa，溴化锂溶液的浓度为60-61 wt％。平滑管和翅片管的外径为16.0 mm；内径为12.0毫米。翅片管的表面粗糙度系数为2.7至6.0。研究表明，对于翅片管，与光滑管相比，降低到表面单元的传热系数高出30％。