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Enhancement of bubble absorption process using a CNTs-ammonia binary nanofluid

✍ Scribed by Xuehu Ma; Fengmin Su; Jiabin Chen; Tao Bai; Zhenxing Han

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 282 KB
Volume: 36
Category: Article
ISSN: 0735-1933
DOI: 10.1016/j.icheatmasstransfer.2009.02.016

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✦ Synopsis

The main objective of the paper is to investigate the enhancement of the heat and mass transfer characteristics for a NH 3 /H 2 O bubble absorption process using the CNTs-ammonia binary nanofluid as a working medium. Using the surface modification of CNTs, the CNTs-ammonia binary nanofluid is successfully prepared without the addition of any dispersants. The effects of the mass fraction of CNTs, the initial concentration of ammonia in the binary nanofluid and the flow rate of ammonia vapor on NH 3 /H 2 O bubble absorption are studied experimentally. The mechanism of the binary nanofluid enhancing bubble absorption is discussed accordingly. The results show that the mass fraction of CNTs has an optimum value to the effective absorption ratio of the binary nanofluid, and the effective absorption ratio increases with the initial concentration of ammonia increasing.

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