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Indexed by:期刊论文

Date of Publication:2009-08-01

Journal:INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER

Included Journals:SCIE、EI

Volume:36

Issue:7

Page Number:657-660

ISSN No.:0735-1933

Key Words:Process intensification; Bubble absorption; Binary nanofluid; Grazing effect

Abstract: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. (C) 2009 Elsevier Ltd. All rights reserved.