Study on Leakage Measurements of Oxygen and Helium Using Standard Gas Flow Rates in a Orifice Flow

Title & Authors
Study on Leakage Measurements of Oxygen and Helium Using Standard Gas Flow Rates in a Orifice Flow
Lee, Joongyoup; Han, Sangyeop; Huh, Hwanil;

Abstract
In this study, correlation equations were arranged about mass flow rates of oxygen and volume flow rates of helium using a mouthpiece method. The mouthpiece method can reduce examination cost by using similar empirical formula. Instead of liquid oxygen, in the mouthpiece method, gas helium can be measured in order to determine the leakage amount of liquid oxygen conveniently. Experiment was conducted and compared to understand leakage amount relation between the helium and the oxygen for prototype item under a room and a cryogenic temperature conditions. The leakage volume flow rate [$\small{A.m{\ell}/s}$] of the helium was 174 times higher than mass flow rate [g/s] of the oxygen leakage at liquid state. The derived correlation equations were verified using data from the National Institute of Standards and Technology (NIST).
Keywords
Mouthpiece Method;Leakage;Liquid Oxygen;Gas Helium;Liquid Rocket Engine;
Language
Korean
Cited by
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