Accession Number:

AD0683989

Title:

A COMPARISON OF MAGNETIC SYSTEMS FOR PRODUCING STRONG LARGE-VOLUME FIELDS,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1968-10-31

Pagination or Media Count:

24.0

Abstract:

Four types of magnetic systems are analyzed and compared with regard to their suitability for use in large-scale MHD power generators. The four types discussed are 1 an ironless coaxial magnetic system with a tangential field, 2 an ironless elliptical-type system with a winding in the form of two intersecting ellipses or circles, 3 an O-shaped system with a magnetic circuit, and 4 a diamond-shaped system with a magnetic circuit. The tabular data show the advantages of the elliptical system over the others for the whole range of the excitation energy, which is a function of the relative thickness of the current layer. The diamond-shaped system is preferred, however, if losses can be reduced by reducing the resistivity of the winding material. In the magnetic systems analyzed, excitation losses amount to about 10 of the generated energy, provided the MHD generator is sufficiently large.

Subject Categories:

  • Electric Power Production and Distribution
  • Electricity and Magnetism
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE