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On the efficiency of a Meissner-Ochsenfeld heat engine

โœ Scribed by R. Fischer; E. Bochenek; H. Voigt

Book ID
103942259
Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
282 KB
Volume
168
Category
Article
ISSN
0921-4534

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โœฆ Synopsis

Utilizing the Meissner-Ochsenfeld effect of high-T, superconductors we developed a novel heat engine. The rotor carriers 20 Y-Ba-Cu-0 pellets at the rim. They pass the air gap of a permanent-magnet system in an open Dewar vessel tilled with liquid nitrogen. When in motion, the pellets, one after the other, turn superconducting and experience a driving force due to the Meissner-Ochsenfeld effect in the divergent magnetic field at the end of the air gap. The efficiency of this heat engine working between the temperatures T, < T, and T,,> T, is calculated by means of the H, T-diagram. In a model analysis we treat the case of a type-1 superconductor (lead).

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