A Microcosmic Absorption Model for Absorber in Solar Driven Absorption Heat Pump

The absorption heat pump has currently become an important device in saving energy because of its effectiveness in utilizing low grade heat. A microcosmic absorption model was established for the horizontal falling film absorber. The Nusselt solution for film thickness and velocity distribution was applied and the mass and energy conservation were used to build the heat and mass transfer equations. Besides, heat and mass transfer equations were joined by reciprocity of each other. A complete absorption model was given. In order to justify this model, the largest absorption system experiment bench in China was built. The calculated results were compared to experimental values and showed satisfying agreement. This model will play an important role in absorption system design and relative researches.Copyright © 2010 by ASME