Electrical generator or motor structure – Non-dynamoelectric – Thermal or pyromagnetic
Patent
1981-04-09
1984-03-06
Duggan, Donovan F.
Electrical generator or motor structure
Non-dynamoelectric
Thermal or pyromagnetic
H01J 4500
Patent
active
044356633
ABSTRACT:
A thermochemical magnetic generator system utilizes a gas, preferably hydrogen, and a material, such as LaCo.sub.5, which varies in magnetization upon addition of the gas to the material to generate electricity from a magnetic circuit which includes the magnetizable material in the circuit. When the gas partial pressure is reduced or heat is applied to the material which has combined with the gas, then the gas is driven off in a thermochemical reaction which reverses the magnetization of the system. In particular, the addition of hydrogen gas to LaCo.sub.5 reduces the magnetization and its removal from the material increases the magnetization. Rapid reversal of the pressure cycle or heating and cooling cycles with a plurality of chambers through which the gas is admitted and exhausted reversibly can be used as a source of electricity.
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M. Ohkoshi, et al, "Rotational-Type Spin Reorientation in Nd.sub.1-x Dy.sub.x Co.sub.5 and Its Application to Thermomagnetic Generator", IEEE Transactions on Magnetics, vol. Mag-13, No. 5, Sep. 1977, pp. 1158-1160.
Y. Shimada et al, "Thermomagnetic Generators Using Low Curie Temperature Materials", a paper given at Intermag-MMM Conf., NY, 1979, but not published in the Proceedings of the Conf. IEEE Transactions on Magnetics, vol. Mag-15, No. 6, Nov. 1979.
S. Wolf, "Hydrogen Sponge Heat Pump", Tenth Intersociety Energy Conversion Eng. Conf., IECEC '75 Record, pp. 1348-1351.
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K. Nomura, et al, "A Novel Thermal Engine Using Metal Hydride", Energy Conversion, vol. 19, No. 1, Pergamon Press, pp. 49-57.
Gambino Richard J.
Ruf Ralph R.
Beckstrand Shelley M.
Duggan Donovan F.
International Business Machines - Corporation
Jones II Graham S.
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