摘要:
A superconducting cable line includes a heat insulation pipe for a fluid (2) for transporting liquid hydrogen (1), a superconducting cable (10) housed in the heat insulation pipe for a fluid (2), and heat exchange means for performing a heat exchange between liquid hydrogen (1) and a refrigerant of the cable (10). The superconducting cable (10) includes a cable core inside a heat insulation pipe for a cable and is housed in the heat insulation pipe for a fluid (2) to form a low temperature environment around the cable (10) and a double heat insulation structure including the heat insulation pipe (2). Therefore, since heat intrusion into the superconducting cable (10) is reduced and the refrigerant is cooled with liquid hydrogen (1), the line can reduce energy for cooling the refrigerant.
摘要:
Procédé pour le maintien à basse température d'une cryoliaison supraconductrice au moyen d'un débit d'azote liquide produit par un liquéfacteur (1) alimentant l'une des extrémités du tronçon de liaison, dont le tronçon est alimenté par un liquéfacteur (1) unique et en ce que l'on procède en un point intermédiaire au moins du tronçon de transport au soutirage d'azote.
摘要:
A superconducting cable (1) for high power with at least one phase comprises a superconducting core (2) wherein a plurality of elements (3) are housed, which are structurally independent and magnetically uncoupled, each of which includes - for each phase - a couple of phase and neutral coaxial conductors, each formed by at least a layer of superconducting material, electrically insulated from one another by interposition of a dielectric material (8). Thanks to the distribution of the superconducting material into several coaxial conductive elements (3), the cable (1) allows to transmit high current amounts in conditions of superconductivity, while using a high-temperature superconducting material sensitive to the magnetic field.
摘要:
A two stage cryocooler sleeve is provided having a second stage heat exchanger system capable of achieving lower temperatures than the first stage heat exchanger. A current lead (273) comprising a ceramic superconductor, has a critical temperature greater than the operating temperature of the first stage (263). The lead (273) is tapered. The broader end is thermally coupled to the first stage heat exchanger (263) and the narrow end coupled to the second stage heat exchanger (265). The tapered ceramic lead reduces the heat conduction from the first heat exchanger (263) to said second heat exchanger (265).
摘要:
An Nb 3 Aℓ multi-filamentary superconducting wire capable of realizing both stabilization of a superconducting state and increase in capacity is provided. The Nb 3 Aℓ multi-filamentary superconducting wire includes a core (1) formed of copper or copper alloy and located at the center of the wire; a multi-filamentary superconductor layer (2) located around the core (1) and having filaments (4) containing Nb and Aℓ as constituent elements embedded in a matrix (5) formed of copper or copper alloy; and a high resistance layer (3) located around the multi-filamentary superconductor layer (2), and is characterized in that a sectional area of the core (1) is at least 15% of the total sectional area of the core (1) and the matrix (5) and that the core (1) and the matrix (5) are formed of copper or copper alloy of at least 99.9% purity.