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Title: US4151423: Flowing saline water magnetohydrodynamic electric generator
[ Derwent Title ]

Country: US United States of America

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8 pages

Inventor: Hendel, Frank J.; San Luis Obispo, CA 93401

Assignee: None

Published / Filed: 1979-04-24 / 1978-06-27

Application Number: US1978000919470

IPC Code: Advanced: F03B 13/12; F03B 13/14; F03B 13/18; F03B 13/20; H01L 41/113; H02K 7/18; H02K 35/02; H02K 44/08;
Core: F03B 13/00; H02K 35/00; H02K 44/00; more...
IPC-7: F03B 13/12;

ECLA Code: F03B13/12; F03B13/14B; H02K44/08B; R05B240/40; R05B240/917; R05B260/407; R05B260/408; Y02E10/38;

U.S. Class: Current: 290/042; 290/043; 290/053; 290/054; 310/011;
Original: 290/042; 310/011; 290/053; 290/043; 290/054;

Field of Search: 310/011 290/001,2,42,43,53,54 417/100

Priority Number:
1978-06-27  US1978000919470
1977-04-01  US1977000783549

Abstract:     A magnetohydrodynamic electric generator for the direct energy conversion of the kinetic energy of saline water flowing through a magnetic field, preferably in the constricted part of a duct. Means may be provided to increase the kinetic energy of the flowing saline water using wave-powered air compressors and/or water pumps. Also described are sea platforms containing a multitude of electricity generators in a configuration to maximize the conversion of the kinetic energy of flowing saline water into electric energy.

Attorney, Agent or Firm: Spensley, Horn & Lubitz ;

Primary / Asst. Examiners: Schaefer, Robert K.; Redman, John W.

INPADOC Legal Status: None          Buy Now: Family Legal Status Report

Related Applications:
Application Number Filed Patent Pub. Date  Title
US1977000783549 1977-04-01    1978-08-29  Wave powered electric generator

Parent Case:

    This application is a continuation in part of U.S. Application Ser. No. 783,549, filed Apr. 1, 1977 now U.S. Pat. No. 4,110,630, by the present inventor and titled "Wave Powered Electric Generator."

Family: Show 2 known family members

First Claim:
Show all 23 claims
What is claimed is:     1. A flowing saline sea water MHD electric generator comprising:
  • a duct for the channelization of conductive flowing saline water;
  • means applying a magnetic field orthogonal to the longitudinal axis of the duct;
  • electrode means positioned orthogonally to both the magnetic field and the flow of water through the duct, and in contact with the flowing conductive saline water therein such that the electrode means receives at least some of the electrical energy generated as the sea ebbs and flows and the conductive flowing saline water passes through the magnetic field;
  • means to augment the flow of sea water thru the duct in synchronization with wave flow past the duct, thereby to increase the generated electrical energy;
  • buoying and anchoring means for holding the duct just beneath the surface of the water;
  • means connected to the electrode means for both rectifying and condensing the electrical energy generated by motion of the flowing saline water through the magnetic field;
  • means to prevent leakage of electric current from the condensing means to the saline water; and
  • power transmission means for supplying the generated, rectified, and condensed electric energy to an external electrical load.

Background / Summary: Show background / summary

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Description: Show description

Forward References: Show 9 U.S. patent(s) that reference this one

U.S. References: Go to Result Set: All U.S. references   |  Forward references (9)   |   Backward references (3)   |   Citation Link

Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 9pp US3161788* 1964-12 Russell    
Get PDF - 11pp US3387150  1968-06 Powers et al.   DUCT FOR MAGNETOHYDRODYNAMIC DEVICES
Get PDF - 8pp US3940640  1976-02 Petty et al.  Avco Everett Research Laboratory, Inc. MHD generator with uniform current distribution
  * some details unavailable
Foreign References:
Publication Date IPC Code Assignee   Title
Buy PDF FR1360382 1964-03  H02K 44/12 COMMISSARIAT ENERGIE ATOMIQUE Générateur magnéto-hydro-dynamique utilisant un fluide à temperature non uniforme 
  CH0413066 1964-08       

Other References:
  • "Geomagnetism," by Chapman & Bartels, Oxford Univ. Press, 1940, pp. 445-448, 708, 710.
  • "Magnetohydrodynamic Power Generation," Discovery; The Magazine of Scientific Progress, Aug. 1961, vol. XXII/68.

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