Natural circulation of LN2 in the 200 m HTS DC experimental facility
IVANOV Yury, 渡邉 裕文, 河原 敏男, 浜辺 誠, 山口 作太郎 （中部大）
Abstract:Conventional design of HTS cable cooling system presupposes application of cryopumps to circulate liquid refrigerant. However， they are powerful source of heat load and possess a number of other disadvantages. Alternatively， thermal siphon effect can be used. The new 200 m HTS DC facility in Chubu University is equipped with heaters to affect temperature distribution， and 4-5 m elevation difference provides conditions for natural circulation of LN2. The results of preliminary experiments are discussed.