Study on Hydrogen Magnetic Refrigeration

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420890
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Energy engineering
• Research Institution: National Institute for Materials Science
• Principal Investigator: NUMAZAWA Takenori 国立研究開発法人物質・材料研究機構, 先端材料解析研究拠点, 主席研究員 (30354319)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: エネルギー輸送 / エネルギー貯蔵 / 水素 / 磁気冷凍

Outline of Final Research Achievements

In order to achieve a high efficient magnetic refrigeration cycle for hydrogen liquefaction, we considered a new cycle consisting of cascade connected two AMR beds. This is called as a double acting AMR. This configuration will operate on the AMR cycle with more stable and efficient. We developed a calculation code to estimate thermal and magnetic properties with more accuracy by using Monte Carlo method. This provided the better fitting especially in the non-linear properties. Then, we developed a cycle simulation code including Monte Carlo method and it showed good predictions for the experiments. Based on the simulation, we constructed the experimental machine at room temperatures, because of easier thermal condition. The new AMR cycle showed very positive results with higher efficiency. This result will be able to apply even in the low temperatures such as hydrogen region.

Free Research Field

低温工学、低温物理、物性、熱工学