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http://dx.doi.org/10.5916/jkosme.2016.40.9.842

Separation characteristics of separation devices using inlet water mixed with exhalation gases without a compressor  

Heo, Pil Woo (Extreme Mechanical Engineering Research Division, Korea Institute of Machinery and Materials)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.40, no.9, 2016 , pp. 842-846 More about this Journal
Abstract
It's possible for a human to breathe under water, but the amount of dissolved oxygen in the water is small and a large amount of water is necessary to obtain sufficient dissolved oxygen from water. So, large separation system with large water pumps, having large surface areas, and large battery sources are needed. Exhalation gases are used to solve this problem. Theses gases contain some oxygen, nitrogen, and carbon dioxide; they contain less oxygen and more carbon dioxide compared to air. Therefore, reduction of the amount of carbon dioxide is necessary. If exhalation gases are employed appropriately, the separation device can be made more compact. Inlet water mixed with exhalation gases is supplied into the separation device, and dissolved gases are separated from the mixed water as it passes through the device. The inlet part of a typical separation system with a water delivery pump before the membrane module has more than one atmosphere. Hence, a compressor is used to mix the exhalation gases. In this study, the pressure at the inlet due to the use of a suction pump after the membrane module was less than one atmosphere; hence, compressors were not required. Separation characteristics were studied using a separation device without a compressor. The use of exhalation gases led to an increase in the amount of dissolved gases being separated. As the amount of inlet exhalation gases was increased, the separation of dissolved gases was increased as well.
Keywords
Separation characteristics; Exhalation gases; Separation device; Mixed inlet water; Dissolved oxygen;
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1 P. W. Heo, "Artificial gill technology," Machinery and Materials," vol. 22, no. 3, pp. 110-119, 2010.
2 N. Matsuda, K. Sakai, T. Nakamura, and R. Majima, "Temperature-controlled enhancement of oxygen uptake from water using oxygen carrier solution," Journal of Membrane Science, vol. 184, no. 1, pp. 17-26, 2001.   DOI
3 K. Nagase, F. Kohori, and K. Sakai, "Development of a compact artificial gill using concentrated hemoglobin solution as the oxygen carrier," Journal of Membrane Science, vol. 215, no. 1-2, pp. 281-292, 2003.   DOI
4 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. 69, pp. 1258-1261, 2012.
5 P. W. Heo and I. S. Park, "Separation of dissolved gases from water for a portable underwater breathing," World Academy of Science, Engineering and Technology, vol. 79, pp. 1066-1069, 2013.
6 P. W. Heo, "Separation characteristics of dissolved gases from water using a portable separation system with hollow fiber membrane modules," International Journal of Science and Engineering Investigations, vol. 4, no. 46, pp. 71-74, 2015.
7 P. W. Heo, "Enhancement of separation of dissolved gas from water using synthesized exhalation mixed to inlet of a membrane module," International Journal of Science and Engineering Investigations, vol. 4, no. 46, pp. 59-64, 2015.
8 P. W. Heo, "Increasing separation of dissolved gases using a portable system with hollow fiber membarne modules including two inlets," International Research Journal of Engineering and Technology, vol. 2, no. 8, pp. 1457-1460, 2015.