The effect of nano-particles on the bubble absorption performance in a binary nanofluid

• Published in: International journal of refrigeration Vol. 29; no. 1; pp. 22 - 29
• Main Authors: Kim, Jin-Kyeong, Jung, Jun Young, Kang, Yong Tae
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 2006; Elsevier Science
• Subjects: Absorption system; Ammonia-water; Ammoniac-eau; Applied sciences; Bubble; Bulle; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Experiment; Expérimentation; Fluid; Fluide; Particle; Particule; Refrigerating engineering; Refrigerating engineering. Cryogenics. Food conservation; Système à absorption; Particle; Fluide; Bubble; Particule; Absorption system; Ammonia-water; Experiment; Fluid; Système à absorption; Bulle; Ammoniac-eau; Expérimentation; Water; Ammonia; Refrigeration installation; Correlation; Absorption; Absorber
• ISSN: 0140-7007; 1879-2081
• DOI: 10.1016/j.ijrefrig.2005.08.006

The objectives of this paper are to examine the effect of nano particles on the bubble type absorption by experiment and to find the optimal conditions to design highly effective compact absorber for NH 3/H 2O absorption system. The initial concentrations of NH 3/H 2O solution and the kinds and the concentrations of nano particles are considered as key parameters. The results show that the addition of nano particles enhances the absorption performance up to 3.21 times. Moreover, the absorption rate increases with increasing concentration of nano particles and the nano particles are more effective for lower absorption potential solution. The potential enhancement mechanism for binary nanofluid is suggested. The experimental correlations of the effective absorption ratio for each nano particles, Cu, CuO, and Al 2O 3, are suggested within ±10% error-band.