NASA NTRS · 19750000116
Heat-operated cryogenic electrical generator
Abstract
Generator operation is based upon unusual hydrodynamic properties exhibited by liquid helium below superfluid critical point. Below that temperature, liquid behaves as though it is mixture of two interpenetrating fluids. When transition takes place between superfluid and normal states, conservation of momentum is always balanced by normal fluid.
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Wang, T. G., Saffren, M. M., Elleman, D. D.. 1975-06-01. Heat-operated cryogenic electrical generator. https://ntrs.nasa.gov/citations/19750000116
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