왕복형 자기냉동시스템 내 양방향 유동 구간의 영향 분석

다국어 초록 (Multilingual Abstract)

In this study, we have developed a reciprocating magnetic refrigeration system and analyzed the effect of the bi-directional flow region in the system. This system consists of four active magnetic regenerators(AMRs), and each of them contains around 15.1 g of 1.0~1.4 mm gadolinium chips with 60.4 g in total in the system. Four AMRs can be groups as two according to the magnetization state and two AMRs in each group are connected in series. In the connection region, bi-directional flow occurs due to the direction change of the heat transfer fluid flow according to the magnetization state change. In the experiments, we modified the structure of this region and compared the temperatures of each end of AMRs and the temperature spans, that present the system performance. As the results, we observed that we can reduce the temperature difference occurred at the bi-directional region to 0.1 ℃, which was 2 ℃ in the original system, and also increase the maximum temperature span from 5.8 ℃ to 7.2 ℃ .

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 연구방법
• 3. 실험 구성 및 결과 분석
• 4. 결론
• References