Investigation expérimentale et théorique de la captation et conversion de l’énergie solaire pour diverses applications

Abstract

In the perspective to protect the environment and to reduce building energy consumption, solar desiccant cooling appears as an alternative to vapour compression systems with high energy consumption and important environmental impact. The understanding of this technology has to be refined through experimental study by setting up pilot plants. This study is a practical method to gain experience by analyzing all the processes behind solar cooling technology. In this work we have conducted an experimental and numerical investigation of a desiccant plant powered by solar vacuum tube collectors. Experimental results showed a high potential COP(th) and the possibility to proceed exclusively by solar energy with a high efficiency of the solar installation. The developed models of the installation components were implemented in the oriented object simulation environment TRNSYS and the comparison between the numerical and the experimental results showed good accuracy. The investigation of solar energy in the desiccant process showed that vacuum tube collectors have a good solar fraction and an overall efficiency of à 0,5.