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http://dx.doi.org/10.7316/KHNES.2022.33.5.525

Analysis of Thermal Flow Characteristics according to the Opening Ratio of High-Pressure Valve for Hydrogen Storage Tank  

JUNG, DA WOON (Graduate School of Mechanical Engineering, Kongju National University)
CHOI, JIN (Korea Automotive Technology Institute(Katech))
SUH, HYUN KYU (Division of Mechanical and Automotive Engineering, Kongju National University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.33, no.5, 2022 , pp. 525-533 More about this Journal
Abstract
In this study, in order to numerically analyze the heat flow characteristics in the valve according to the opening rate for the solenoid valve for hydrogen supply applied to the hydrogen storage tank, flow characteristics were comparatively analyzed. Through the analysis of pressure and temperature distributions within the valve according to the high-pressure supply condition of 70 MPa or more, the heat flow characteristics in the valve, inlet and outlet passage according to the opening rate of the valve were identified. As a result a sudden change in the fluid behavior appears in the neck region of the valve, and it is understood that the flow separation caused by the flow path shape of the expanded tube has a dominant influence on the flow characteristics. And, it was confirmed that the shape of the valve seat is a factor significantly affecting the improvement of flow rate and differential pressure performance.
Keywords
Flow separation; Hydrogen storage tank; Opening ratio; Pressure distributions; Pressure drop; Valve seat;
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Times Cited By KSCI : 4  (Citation Analysis)
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