Experimental investigation and model verification for a GAX absorber

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:486130

Palmer, S C ^[1]; Christensen, R N ^[2]

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1. Naval Academy, Annapolis, MD (United States). Mechanical Engineering Dept.
2. Ohio State Univ., Columbus, OH (United States). Mechanical Engineering Dept.

In the ammonia-water generator-absorber heat exchange (GAX) absorption heat pump, the heat and mass transfer processes which occur between the generator and absorber are the most crucial in assuring that the heat pump will achieve COPs competitive with those of current technologies. In this study, a model is developed for the heat and mass transfer processes that occur in a counter-current vertical fluted tube absorber (VFTA) with inserts. Correlations for heat and mass transfer in annuli are used to model the processes in the VTA. Experimental data is used to validate the model for three different insert geometries. Comparison of model results with experimental data provides insight into model corrections necessary to bring the model into agreement with the physical phenomena observed in the laboratory.

• Research Organization: Naval Academy, Annapolis, MD (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AI05-95OR22419
• OSTI ID: 486130
• Report Number(s): CONF-960988--4; ON: DE97006256
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ABSORPTION REFRIGERATION CYCLE
AMMONIA
AUGMENTATION
COEFFICIENT OF PERFORMANCE
HEAT TRANSFER
MASS TRANSFER
REFRIGERATING MACHINERY