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Title: Augmentation of heat transfer during filmwise condensation of steam and R-134a over single horizontal finned tubes
Authors: Kumar R.
Varma H.K.
Mohanty, Bikash
Agrawal K.N.
Published in: International Journal of Heat and Mass Transfer
Abstract: An experimental investigation has been carried out to augment the heat transfer rate by enhancing the heat transfer coefficient during the condensation of pure vapours of steam and R-134a over horizontal finned tubes. The study was conducted for plain tubes, circular integral-fin tubes (CIFTs), spine integral-fin tubes (SIFTs) and parially spined circular integral-fin tubes (PCIFTs). The SIFT out performed the CIFT for the condensation of R-134a by approximately 16%. However, the spines were found most effective in the bottom side of the CIFT. The PCIFTs with the spines only in the bottom side of the tube augmented the heat transfer coefficient by 20% and 11% for the condensation of steam and R-134a, respectively, in comparison to the CIFT. © 2001 Elsevier Science Ltd. All rights reserved.
Citation: International Journal of Heat and Mass Transfer (2001), 45(1): 201-211
Issue Date: 2001
Publisher: Elsevier Ltd
ISSN: 179310
Author Scopus IDs: 55389796000
Author Affiliations: Kumar, R., Mechanical Engineering Group, Birla Institute of Technology and Science, Pilani 333 031, India
Varma, H.K., Mechanical Engineering Department, AKG Engineering College, Ghaziabad 201 001, India
Mohanty, B., Chemical Engineering Department, University of Roorkee, Roorkee 247 667, India
Agrawal, K.N., Mechanical and Industrial Engineering Department, University of Roorkee, Roorkee 247 667, India
Funding Details: Authors are grateful to the Council of Scientific and Industrial Research, New Delhi, India for providing the financial assistance for the completion of this work. The authors are also thankful to the Du Pont Inc., USA for supplying a sample of R-134a to conduct the experiments.
Corresponding Author: Kumar, R.; Mechanical Engineering Group, Birla Inst. of Technology/Science, Pilani 333 031, India; email:
Appears in Collections:Journal Publications [ME]

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