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6204066 
Book/Book Chapter 
Joule-Thomson Effect in Hydrogen-Methane Mixtures at Temperatures Between —35 and +40° 
Ayber, R 
1965 
Pergamon 
Progress in Refrigeration Science and Technology 
311-318 
Publisher Summary This chapter describes the Joule–Thomson effect in hydrogen-methane mixtures at temperatures between −350° and +40°C. The mixture is prepared at approximately the desired composition the water sealed gasholder and then drawn into the compressor. Considering the solubility of methane in mineral lubricating oils, a compressor was chosen in which the pistons are lubricated with water that is introduced into the incoming gases before the suction valve of the first stage cylinder. The compressed gas flows first through the water trap that is provided with a let-off valve. The gas is then passed through the silica-gel dryer, whose proportions are such that the gas leaving it has a dew point lower than 35°C. The pressures at the throttling valve were controlled manually by means of the by-pass valve. This method was found to be satisfactory since no noticeable fluctuations were observed on the manometers, once the equilibrium state was attained. Thermoelements placed on specific points in the apparatus were connected to a recording potentiometer, and readings for the Joule–Thomson effect were taken only after these temperatures showed a constant course.