The Rate of Evaporation of Liquid Hydrogen Due to the Ortho-Para Hydrogen Conversion

Abstract
The evaporation of liquid hydrogen caused by the heat of reaction of the ortho‐para conversion has been measured as a function of the o‐hydrogen concentration. The results are discussed, and a set of curves is given which describes all cases of practical interest. Methods of minimizing the rather serious evaporation of liquid hydrogen as the result of this effect are suggested.

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