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http://dx.doi.org/10.3795/KSME-B.2008.32.9.669

Experiment on Heat Transfer and Absorption Performance Enhancement for Binary Nanofluids (NH3/H2O + Nano-Particles)  

Lee, Jin-Ki (경희대학교 대학원 기계공학과)
Jung, Chung-Woo (경희대학교 대학원 기계공학과)
Kang, Yong-Tae (경희대학교 기계.산업시스템 공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.32, no.9, 2008 , pp. 669-675 More about this Journal
Abstract
The objectives of this paper are to examine the effect of nano-particles on the pool type absorption heat transfer enhancement and to find the optimal conditions to design a highly effective compact absorber for ammonia/water absorption system. The effect of $Al_2O_3$ nano-particles and carbon nanotube(CNT) on the absorption performance is studied experimentally. The experimental ranges of the key parameters are 20% of ammonia concentration, $0{\sim}0.08\;vol%$ (volume fraction) of CNT particles, and $0{\sim}0.06 \;vol%$ of $Al_2O_3$ nano-particles. For the ammonia/water nanofluids, the heat transfer rate and absorption rate with 0.02 vol% $Al_2O_3$ nano-particles were found to be 29% and 18% higher than those without nano-particles, respectively. It is recommended that the concentration of 0.02 vol% of $Al_2O_3$ nano-particles be the best candidate for ammonia/water absorption performance enhancement.
Keywords
Binary Nanofluids; Absorption; Nano-particles; Ammonia/Water$Al_2O_3$; CNT;
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Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
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