Visualization of bubble nucleation during nucleate pool boiling outside a vertical cylindrical heated surface was done for ammonia-water binary mixture in order to obtain a descriptive behavior of the boiling, which was directly compared with the measured heat transfer coefficient data at low pressure of 4–8 bar and at low mass fraction of 0 < x < 0.3 and at different heat flux. Still images taken with high speed camera are used to demonstrate the decrease in boiling heat transfer coefficient with increase in ammonia mass fraction. Jensen and Memmel model has better agreement with experimental bubble diameter. Further work is required to obtain quantitative information about bubble nucleation parameters. It is found that both Calus and Rice and Stephan–Koorner correlation can predict the experimental heat transfer coefficient values with a maximum deviation of ± 20%.
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Nucleate Pool Boiling Heat Transfer Measurement and Flow Visualization for Ammonia-Water Mixture
A. Sathyabhama,
A. Sathyabhama
Research Scholar Department of Mechanical Engineering NITK
, Surathkal/Faculty MSRIT, Vidya Soudha, MSR Nagar, MSRIT Post, Bangalore-560 054, Karnataka, India
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T. P. Ashok Babu
T. P. Ashok Babu
Professor Department of Mechanical Engineering NITK
, Surathkal Post Srinivasnagar, Mangalore 575 025, Karnataka, India
Search for other works by this author on:
A. Sathyabhama
Research Scholar Department of Mechanical Engineering NITK
, Surathkal/Faculty MSRIT, Vidya Soudha, MSR Nagar, MSRIT Post, Bangalore-560 054, Karnataka, India
e-mail:
T. P. Ashok Babu
Professor Department of Mechanical Engineering NITK
, Surathkal Post Srinivasnagar, Mangalore 575 025, Karnataka, India
J. Heat Transfer. Oct 2011, 133(10): 101506 (7 pages)
Published Online: August 23, 2011
Article history
Received:
May 28, 2010
Accepted:
May 18, 2011
Online:
August 23, 2011
Published:
August 23, 2011
Citation
Sathyabhama, A., and Ashok Babu, T. P. (August 23, 2011). "Nucleate Pool Boiling Heat Transfer Measurement and Flow Visualization for Ammonia-Water Mixture." ASME. J. Heat Transfer. October 2011; 133(10): 101506. https://doi.org/10.1115/1.4004258
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