Methane's boiling point is about 110K, compared to hydrogen's 20K. This means that both fuel and oxidizer lines can be purged with gaseous nitrogen. Liquid hydrogen lines can only be purged with helium, as hydrogen's boiling point is below the melting point of other inert gases.
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Architectural Intern Salary. (United States). Architectural Interns in the United States can expect to earn an average of $41K per year. In the world of Architectural Interns, total cash compensation can vary between $29K and $51K.rchitectural Intern Salary. (United States). Architectural Interns in the United States can expect to earn an average of $41K per year. In the world of Architectural Interns, total cash compensation can vary between $29K and $51K.