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    Criteria for Predicting Deteriorated Heat Transfer Conditions for Water at Supercritical Pressure = Criteri per la previsione del deterioramento dello scambio termico per acqua a pressione ipercritica

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    The conditions of occurrence of the deteriorated heat transfer for water at supercritical pressure are investigated. The most widely accepted correlations for the deteriorated heat transfer regimes prediction are compared with the experimental data obtained by several authors

    Deteriorated Heat Transfer at Supercritical Pressure = Fenomeni di deterioramento nello scambio termico a pressione ipercritica

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    Heat transfer to supercritical pressure water is analyzed with reference to the thermal-hydraulics of boiler plants. The mechanisms of the heat transfer deterioration, concerning the maximum allowable wall temperature, are particularly investigated. The most widely accepted heat transfer correlations are compared with B&W test data and with some measurements performed by ENEL at a supercritical 660 MWe steam generator
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