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An excellent insulation performance can promote the development of liquid hydrogen (LH2) due to its characteristics of easy evaporation. To improve the storage efficiency of LH2 and further enhance the performance of multilayer insulation structure (MLI), an experimental setup has been designed and fabricated based on the evaporation calorimetry to test the performance of MLIs. Thermodynamic parameters such as the apparent thermal conductivity and the influence of each factor on the insulation performance are obtained. The correlations for MLI heat leakage calculation are also fitted based on the experimental results. Based on the heat leakage correlations, the MLI layer density and the vapor-cooled shield locations are optimized to achieve the optimal insulation performance of LH2 tanks. This study is of great significance for developing low heat leakage insulation structures and improving the efficiency of LH2 storage and transportation.
This work was supported by the National Key Research and Development Program of China (No. 2022YFB4002900) and the Youth Innovation Team of Shaanxi Universities.
| Submitters Country | China |
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