Effect of Surfactants on the Flow Patterns of Horizontal Tube Bundles with a Falling Film,Chemie Ingenieur Technik

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Effect of Surfactants on the Flow Patterns of Horizontal Tube Bundles with a Falling Film
Chemie Ingenieur Technik ( IF 1.5 ) Pub Date : 2020-03-24 , DOI: 10.1002/cite.201900142
Federico Lonardi ₁ , Michael Olbricht ₂ , Andrea Luke ₁

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The influence of two alcoholic surfactants on the flow patterns of falling film tube bundles is investigated. The flow patterns are measured in a single‐stage absorption chiller in the absence of surfactants. The surface tension of H₂O/aqueous LiBr solution with different concentrations of 1‐octanol and 2‐ethylhexanol is measured at low pressure in a saturated atmosphere. Small quantities of surfactants in the aqueous solution do not have an influence on the flow patterns of the condenser and evaporator, while a shift from droplet to jet mode is predicted in the absorber and generator at the typical working condition of an absorption chiller.

中文翻译：

表面活性剂对带有降膜的水平管束流动模式的影响

研究了两种含醇表面活性剂对降膜管束流动模式的影响。在没有表面活性剂的情况下，在单级吸收式冷却器中测量流量模式。在饱和气氛中，在低压下测量具有不同浓度的1-辛醇和2-乙基己醇的H ₂ O / LiBr水溶液的表面张力。水溶液中的少量表面活性剂不会影响冷凝器和蒸发器的流型，而在吸收式制冷机的典型工作条件下，在吸收器和发生器中预计会发生液滴从液滴模式向喷射模式的转变。

更新日期：2020-03-24

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