http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
박희철(Heecheol Park),정환준(Hwanjun Jung),김석호(Seokho Kim),박민원(Minwon Park) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.5-3
HTS (High Temperature Superconductor) technology enables compact and high efficient power generators. To keep the superconducting state, the HTS rotor should be cool down to cryogenic temperature. In general, it is known that the optimum operation temperature is about 30 K considering the cost of the HTS conductors and cooling system. Therefore, cooling system should be designed to keep the temperature of the HTS rotor around 30 K. This can be realized by using the liquid neon thermosyphon cooled by crycooler. This paper describes the design process and experimental results for liquid nitrogen re-condensing cooling system. Heat loss of the torque tube is estimated. Flow areas for liquid and gaseous neon are determined considering the pressure drop. Experiments are performed to estimate the background loss of the cooling system itself and to investigate the heat loss through the torque tube. Additional heating is applied to verify the performance of the cooling system.