Mechanism Analysis on Performance Enhancement of Ammonia Bubble Absorption by Nanofluid

Abstract:

The objective of this paper is to analyze the enhancement mechanism of ammonia bubble absorption performance by nanofluid. In this paper, the process of ammonia bubble absorption is divided into three different steps: the bubble growing, the gas absorption in liquid phase and the interface phase transfer. According to the analysis, nanofluid can enhance the diffusion coefficient or the absorption performance in each step, and enhance the whole absorption performance resultly; the gas mass transfer during the bubble growing is enhanced by nanofluid for the surface tension decrease; the main cause for the enhancement of the gas absorption in liquid phase is considered as the transport effect of nanoparticles carrying ammonia gas molecule and the vortex transfer effect arising from Brownian motion of nanoparticles; the main cause for the enhancement of the transfer at phase interface is considered as the Marangoni convection and the vortex transfer effect due to nanoparticles.

• Periodical: Advanced Materials Research (Volumes 433-440)
• Pages: 195-201
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.433-440.195
• Online since: January 2012
• Authors: Wei Sheng, Wei Dong Wu, Hua Zhang, Chang Wei Pang, Run Yu Wu
• Keywords: Ammonia, Bubble Absorption, Enhancement, Mechanism, Nanoparticle

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