Title :
Permanent Magnet Type Eddy Current Heater Based on Cylindrical Halbach Array for Reducing Oil´s Viscosity
Author :
Zhao, L.Z. ; Peng, Y. ; Sha, C.W. ; Li, R. ; Xu, Y.Y.
Author_Institution :
Inst. of Electr. Eng., CAS, Beijing, China
fDate :
6/1/2010 12:00:00 AM
Abstract :
The eddy current, Joule heat and input electrical power of a permanent magnet type eddy current heater based on cylindrical Halbach arrays to reduce the viscosity of crude oil in oil wells were analysed and studied by means of a three-dimensional finite-element method. The results show that when Halbach arrays generate a 0.9 T sinusoidal static field and the annulus conductor is copper, the Joule heat is about 575 W/m for a relative translational motion of 0.5 m/s in direction. The thermal efficiency of the heater is about 77.6%.
Keywords :
crude oil; eddy currents; finite element analysis; permanent magnets; viscosity; 3D finite element method; Cu; Halbach arrays; Joule heat; annulus conductor; crude oil viscosity reduction; cylindrical Halbach array; heater thermal efficiency; input electrical power; magnetic flux density 0.9 T; permanent magnet type eddy current heater; relative translational motion; sinusoidal static field; velocity 0.5 m/s; Cylindrical Halbach array; eddy current heating; finite-element method; reducing viscosity;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2009.2038932
