Thin-Layer Insulation of HTS: Analytical Study

Author

Leveque, Jean ; Lubin, Thierry ; Mezani, Smail ; Douine, Bruno ; Rezzoug, Abderrezak

Author_Institution

Groupe de Rech. en Electrotech. et Electron. de Nancy, Univ. of Lorraine, Vandoeuvre les Nancy, France

Volume

24

Issue

4

fYear

2014

fDate

Aug. 2014

Firstpage

1

Lastpage

5

Abstract

The aim of this paper is to take into account the thin layer of insulation of a superconducting tape or a superconducting coil to calculate heat transfer during a quench. The main problem is that this thin layer is very difficult to mesh in finite-element method. In this paper, we propose a modified factor of the convection coefficient obtained due to an analytical solution of the heat equation. The aim of this modification is to take into account the thickness of the resin, which bands a thin coil, or a superconducting tape immersed in cryogenic bath. Introducing this modified factor leads to a significant simplification of the 3-D thermal study because the diffusion in the resin is taken into account due to the modifying factor.

Keywords

convection; diffusion; finite element analysis; high-temperature superconductors; quenching (thermal); resins; superconducting coils; superconducting tapes; HTS thin-layer insulation; analytical solution; convection coefficient; cryogenic bath; diffusion; finite-element method; heat equation; heat transfer; modified factor; modifying factor; quenching; resin thickness; superconducting coil; superconducting tape; thin coil; Coils; Electron tubes; Heating; Insulation; Resins; Superconducting films; Convection coefficient; electrical engineering; high-temperature superconductors; superconductors stability;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2014.2311404

Filename

6767035