Design and performance evaluation of ortho-para H2 conversion equipment
- Design and performance evaluation of ortho-para H2 conversion equipment
- 백종훈; 강병하
- Ortho-pana 수소변환; 수소액화; 촉매
- Issue Date
- VOL 9, NO 3, 93-100
- The ortho-para H_2 catalytic conversion equipment has been developed to reduce the evaporation loss from stored liquid hydrogen. The ortho-para H_2 conversion heat is evaluated at liquid nitrogen temperature. This problem is of particular interest in the design of the ortho-para H_2 conversion equipment consists of a catalytic converter, a precooler, and a liquid nitrogen bath. 30-90 cc of Fe(OH)_3 are employed as a catalyst in the present converter. The conversion heat and conversion effectiveness are evaluated when mass flow rate of hydrogen is in the range of 0.05-1.6 g/min. It is found that the ortho-para H_2 conversion heat is increased while conversion effectiveness is decreased as the mass flow rate of hydrogen is increased. Both the ortho-para conversion heat and conversion effectiveness are increased with an increase in the amount of the catalyst.
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