NDLI: A large conventional MHD magnet

Content Provider	IEEE Xplore Digital Library
Author	Tarrh, J.
Copyright Year	1965
Abstract	A transverse-field, water-cooled electromagnet for magnetohydrodynamic (MHD) research has been designed, constructed, and successfully tested to a peak central magnetic field of 4.2 T. This paper consists of a brief review of the electromagnetic, mechanical, and thermal designs, and a comparison of test data with design values. The magnet is made up of 9 tonnes (20,000 lb) of hollow copper conductor wound into 8 double-layer pancake coils. A frame of 24 tonnes (53,000 lb) of low carbon steel acts as a low reluctance path for the magnetic flux, while providing support for the coils against the transverse electromagnetic forces. The magnet has been operated continuously at a power level of 4.7 MW, a voltage of 490 V, a current of 9.60 kA, and a copper current density of 1.52 kA/cm²(9.80 kA/ in²). At this level, a peak central magnetic field of 4.2 T is provided horizontally across a 0.267m (10.5 in) gap which is 0.368 m (14.5 in) high. The steel return frame is 1.422 m (56.0 in) long, while the overall length of the magnet is 2.5 m (98 in). The coils are cooled from a closed-loop demineralized water system which provides 109 liter/s (1730 gpm) at a pressure drop of 0.683 MPa (99 psi) across the magnet coils and manifolds.
Sponsorship	IEEE Magnetics Society
Starting Page	1562
Ending Page	1564
Page Count	3
File Size	386802
File Format	PDF
ISSN	00189464
Volume Number	13
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1977-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic flux Coils Testing Magnetic fields Copper Steel Electromagnets Magnetohydrodynamic power generation Electromagnetic fields Conductors
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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