A Collector of Dissolved Air Using Centrifugal Separation for Underwater Breathing
Jung-Ho Park*, In-Seob Park*, So-Nam Yun*,
Young-Bog Ham*, Pil-Woo Heo*, and Sung-Cheol Jang**
*Extreme Mechanical Engineering Research Division, Korea Institute of Machinery & Materials, 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
**Department of Aviation Mechatronics, Korea Aviation Polytechnic College, 46 Dahakgil, Sacheon 664-708, Republic of Korea
This paper investigates a novel underwater breathing apparatus which has no air tank. Instead, it uses centrifugal separation to collect dissolved air. First, a prototype collector is proposed and fabricated. Then, the basic characteristics of various shape parameters are experimentally investigated using tap water to ascertain the optimal design. Next, to confirm the validity of the proposed mechanism, CFD analysis on collection ratio is done using the commercially available STAR-CD tool. After that, a suction device without an additional power source is developed to improve the air collection ratio. Finally, the redesigned collector is tested at different water temperatures, and the air collection results obtained are compared with the results of analysis.
-  C. Acott, “A brief history of diving and decompression illness,” SPUMS J., Vo.29, No.2, pp. 98-109, 1999.
-  R. Klos, “Principles of work of different types of underwater breathing apparatus,” Polish Maritime Research, Vol.15, No.4, pp. 72-84, 2008.
-  K. Nagase, F. Kohori, and K. Sakai, “Development of a compact gill using concentrated hemoglobin solution as the oxygen carrier,” J. of Membrane Science, Vol.215, pp. 281-292, 2003.
-  K. Nagase, U. Hasegawa, and F. Kohori, “The photoresponse of a molybdenum porphyrin makes an artificial gill feasible,” J. of Membrane Science, Vol.249, pp. 235-243, 2005.
-  N. J. Shirtcliffe, G. McHale, M. I. Newton, C. C. Perry, and F. B. Pyatt, “Plastron properties of a superhydrophobic surface,” Applied Physics Letters, Vol.89, pp. 104106-104107, 2006.
-  M. R. Flynn and J. W. M. Bush, “Underwater breathing: the mechanics of plastron respiration,” J. Fluid Mech., Vol.608, pp. 275-296, 2008.
-  S. Atherton, J. C. Brennan, R. H. Morris, and J. D. E. Smith, “Plastron Respiration Using Commercial Fabrics,” Materials, Vol.7, pp. 484-495, 2014.
-  P.-W. Heo and I.-S. Park, “Separation of dissolved gas for breathing of a human against sudden waves using hollow fiber membranes,” World Academy of Science, Engineering and Technology, Vol.6, pp. 1085-1088, 2012.
-  http://www.likeafish.biz/ [accessed on February 11, 2014]
-  R. Suzuki, et al, “Bubble elimination in oil for fluid power systems,” SAE Technical Paper Series, Paper Number 982037, 1998.
-  R. Suzuki and Y. Tanaka, “Downsizing of oil reservoir by bubble eliminator,” Proc. of the 6th JFPS Int. Symp. on Fluid Power, pp. 291-296, 2005.
-  Y. Tanaka, R. Suzuki, K. Arai, K. Iwamoto, and K. Kawazura, “Visualization of flow fields in a bubble eliminator,” J. of Visualization, Vol.4, No.1, pp. 81-90, 2001.
-  S. Sakama, Y. Tanaka, and R. Suzuki, “Optimization of bubble eliminator through numerical and experimental investigation,” Int. J. of Automation Technology, Vol.6, No.4, pp. 418-425, 2012.
-  G. E. Totten, Y. H. Sun, and R. J. Bishop, “Hydraulic fluids: foaming, air entrainment, and air release-a review,” SAE Technical Paper Series, Paper Number 972789, 1997.
-  J.-H. Park, et al, “A study on collector of dissolved air using centrifugal separation,” Proc. of the KSPSE Autumn Conf., pp. 94-97, 2012. (in Korean)
This article is published under a Creative Commons Attribution-NoDerivatives 4.0 Internationa License.