Augmentation of the Performance of Solar Regenerator of Open Absorption Cooling System.

Document Type : Research Studies

Author

Mechanical power Engineering., Tanta University, Faculty of engineering, Thermal engineering

Abstract

In open cycle liquid desiccant air conditioning, the solar collector regenerator is one of the effective ways of regenerating liquid solution. In this work, the regeneration of liquid solution using cross flow of air stream with flowing film of desiccant on the surface of a solar collector/regenerator has been investigated. To evaluate the effect of cross flow of air stream on the performance of the unit two identical units are constructed and tested in the same conditions of operation. One of the two units is augmented with air blower. The absorber plate is a black clothe layer. The forced air stream, which flows a cross the absorber removes the moisture from the liquid solution. The regeneration in the other collector/regenerator unit is free. The results show enhancement of regeneration efficiency for the forced cross flow compared with the free regeneration. The effect of concentration and flow rate on the performance is discussed. Two relations for regeneration efficiency as a function of concentration for the two units are introduced. 

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