In this work we investigated measurements of critical heat flux while performing subcooled pool boiling in FC-72 fluid, in horizontally laid and vertically oriented, electrically heated heating tapes, with differentlly processed heating surfaces. Experimental part took place on measurement track, where we measured different tapes in satured and subcooled boiling conditions. Obtained results showed linear increase of critical heat flux with enlargement of hypothermia in subcooled boiling in comparison with saturated boiling. We also showed effects on critical heat flux of processed surfaces on tapes in comparison with unprocessed tapes, while performing both, subcooled and saturated boiling.
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