Characteristic of Absorption Heat Transfer using LiBr+LiI Solution

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  • LiBr+LiI混合水溶液の水蒸気吸収熱伝達特性
  • LiBr LiI コンゴウ スイヨウエキ ノ スイジョウキ キュウシュウ ネツ デンタツ トクセイ

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Abstract

LiBr-H20 absorption chiller is widely used in Japan, and many research have been made for absorption characteristic in terms of enhancing heat transfer. Another study have been performed for widening working range with higher crystallization limits, and it was reported that adding LiI salt to LiBr-H20 working fluid provide about 5 [mass%] higher crystallization limit under the condition of absorption pressure range.<br> It is necessary to reveal absorption heat transfer performance to utilize this working fluid pair for absorption chiller. In this study absorption heat transfer characteristic was investigated for horizontal and vertical tube. As a result, it was found that heat transfer coefficient increased as mass flow rate of solution increased and mass concentration of solution decrease and that these characteristic were almost the same as LiBr solution, though this solution gave slightly less heat transfer coefficient than LiBr solution.

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