The Influence of Al2O3 Nanofluid on the Falling Film Absorption with Ammonia-water

Based on the preparation of the stable ¿-Al₂O₃ and ¿-Al₂O₃ nanofluid, the comparative experiments on the falling film absorption between ammonia-water and ammonia-water with nano-particles were carried out. The results show that the sorts of nano-particles and surfactants in the nanofluid and the concentration of ammonia in the basefluid are considered as the key parameters. The absorption effect of ammonia was weakened by ¿-Al₂O₃ nanofluid but enhanced by the prepared ¿-Al₂O₃ nanofluid. And efficiency of nanofluid of ¿-Al₂O₃ with PAA as surfactant was higher than that with SDBS. With the increasing of concentration of ammonia solution, the absorption potential declined, but the enhancing influence induced by the nanofluid was more obvious compared to that without nano-particles. The possible mechanism of the experimental phenomena was explained.