Abstract
Static thermal stability of the superconductors cooled by pool boiling has been examined in reference to Stekly's criterion, Maddock's equal area criterion and Wipf's MPZ (Minimum Propagating Zone) theory. No discussion on Stekly's criterion shall be done here because there are no disputable points left. Maddock's equal area criterion and Wipf's MPZ are both discussing the stability from the same point of view of unstable equilibrium. Nevertheless, the former leads to the maximum allowable current and the latter does not. Therefore, in the present paper, the relationship between Maddock's criterion and Wipf's MPZ and the physics underlying these theories are to be discussed firstly. Then an extensive sample calculation of MPZ is introduced for a realistic characteristic of pool boiling heat transfer which is very non-linear. Formulations have been general as far as they should.
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