A NUMERICAL ANALYSIS IN LN2 CHANNEL FOR DC-SC POWER TRANSMISSION LINE

Abstract

In Chubu University, bellows pipes are applied to absorb the heat shrink as a part of straight pipes for superconducting power transmission lines (SC PT). In conventional SC PT systems, SC cables are put in corrugated pipe. Pressure drop of the liquid nitrogen flow in bellows and corrugated pipes are analyzed by a fluid-analysis software. Pressure drop per unit length in the bellows and corrugated pipes is respectively 2.6 and 3.7 times that in the straight pipes. Pressure drop in the bellows is smaller than that in the corrugated pipes. Therefore, bellows are preferable for the DC-SC PT.