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State-of-the-Art Review on Crystallization Control Technologies for water/LiBr Absorption Heat Pumps...

by Kai Wang, Omar A Abdelaziz, Padmaja Kisari, Edward A Vineyard
Publication Type
Journal
Journal Name
International Journal of Refrigeration
Publication Date
Page Numbers
1 to 13
Volume
34
Issue
6

The key technical barrier to using water/lithium bromide (LiBr) as the working fluid in aircooled absorption chillers and absorption heat-pump systems is the risk of crystallization when the absorber temperature rises at fixed evaporating pressure. This article reviews various crystallization control technologies available to resolve this problem: chemical inhibitors, heat and mass transfer enhancement methods, thermodynamic cycle modifications, and absorption system-control strategies. Other approaches, such as boosting
absorber pressure and J-tube technology, are reviewed as well. This review can help guide future efforts to develop water/LiBr air-cooled absorption chillers and absorption heatpump systems.