High-temperature heat pump is recognized as an effective solution for industrial decar-bonization.R245fa has widely employed in high-temperature heat pump systems for its favorable thermal properties.Nevertheless,there is currently a dearth of reported research on the condensation heat transfer characteristics of R245fa under high-temperature conditions.This study experimen-tally investigated the condensation heat transfer characteristics of R245fa within a 9 mm horizontal circular tube at vapor quality range of 0.1～0.9,mass flux range of 218～393 kg·m-2·s-1,saturation temperature range of 80～100℃,and heat flux range of 11300～22500 W·mn-2.Based on a compar-ison between experimental data and existing heat transfer correlations,modifications are made to the existing correlations.The revised correlations exhibited a mean prediction deviation of 6.11％,signifying a significant improvement in prediction accuracy.
维普
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