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http://dx.doi.org/10.3795/KSME-B.2017.41.8.497

Analysis of Flow Characteristic and Optimum Design for Subminiature Pressure Reducer Under High Pressure  

Lee, WonJun (Dept. of Mechanical Engineering, Hanbat Nat'l Univ.)
Baek, JongTae (CAIREN Co., Ltd.)
Yun, Rin (Dept. of Mechanical Engineering, Hanbat Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.41, no.8, 2017 , pp. 497-503 More about this Journal
Abstract
A theoretical study on oxygen flow is fundamental to comprehend the practical production of an oxygen respirator and its stability. In this study, an orifice-type pressure-reducing component was designed for the newly developed oxygen respirator, using the commercial CFD tool, COMSOL Multiphysics, which increases its operational time compared to the existing component. The orifice was optimized by changing the length by 3, 6, and 9 mm within the entire computational domain of the oxygen respirator. Based on an oxygen flow rate of 0.028 kg/s, the oxygen respirator equipped with the newly developed orifice satisfied the flow rate within 33% for a respirator inlet pressure of 300 bar, and within 32.7% for 50, 75, and 100 bar. In terms of component manufacturing, the orifice length was selected as 3 mm, which removes additional changes to the existing component.
Keywords
CFD Simulation; Optimization; Oxygen Respirator; Pressure Reducer;
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