Normally simultaneous air cooling and dehumidification takes place in an air cooling coil. The condensate accumulated on the cooling coil surfaces could significantly affect its thermal and hydraulic performance. The condensate retention and drainage has bee usually regarded as a static process. The total mass of condensate retained was viewed as being influenced by the balance among gravitational, air flow drag forces and surface tension retaining force only. With fixed geometric and surface characteristics and under a constant air Reynolds Number, a cooling coil was therefore considered to have a fixed amount of condensate retained. However, some researches pointed out that the total mass of condensate retained could be influenced by system operating parameters such as temperature and moisture content of inlet air. A previously related study by authors developed a mathematic model and considered this process as being a dynamic but without giving a detailed discussion. In this paper, through a further analysis of data obtained in the previously study, a new viewpoint on condensate retention and drainage process has been suggested in order to better explain the experimental results and to provide a base for proposing some future related research work.
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ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences
July 19–23, 2009
San Francisco, California, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4356-7
PROCEEDINGS PAPER
A New Viewpoint to Studying the Condensate Retention and Drainage Process on Air Cooling Coil
X. G. Xu,
X. G. Xu
The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
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M. Y. Chan,
M. Y. Chan
The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
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S. M. Deng
S. M. Deng
The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
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X. G. Xu
The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
M. Y. Chan
The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
S. M. Deng
The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
Paper No:
HT2009-88338, pp. 657-665; 9 pages
Published Online:
March 12, 2010
Citation
Xu, XG, Chan, MY, & Deng, SM. "A New Viewpoint to Studying the Condensate Retention and Drainage Process on Air Cooling Coil." Proceedings of the ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences. Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Heat Transfer Equipment; Heat Transfer in Electronic Equipment. San Francisco, California, USA. July 19–23, 2009. pp. 657-665. ASME. https://doi.org/10.1115/HT2009-88338
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