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

Journal Article · Sat Jan 01 04:00:00 EST 2011 · International Journal of Refrigeration

DOI:https://doi.org/10.1016/j.ijrefrig.2011.04.006· OSTI ID:1016601

Wang, Kai ^[1]; Abdelaziz, Omar ^[1]; Kisari, Padmaja ^[1]; Vineyard, Edward Allan ^[1]

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1. ORNL

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.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: EE USDOE - Office of Energy Efficiency and Renewable Energy (EE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1016601
• Journal Information: International Journal of Refrigeration, Journal Name: International Journal of Refrigeration Journal Issue: 6 Vol. 34; ISSN 0140-7007; ISSN IJRFDI
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS
ABSORPTION
ABSORPTION HEAT
Absorption heat pump
Air-cooled
BROMIDES
CRYSTALLIZATION
Control technologies
Crystallization
Lithium Bromide
MASS TRANSFER
MODIFICATIONS
THERMODYNAMIC CYCLES
WORKING FLUIDS