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Heat transfer coefficient and pressure drop were measured during condensation of steamin a vertical copper tube with and without Twined Wire Coil Inserts (TWCI), respectively.The Reynolds number range of experiment was 50～2100. Experiment results showed thatTWCI can evidently augment the heat transfer performance of steam condensation in tubewith less pressure drop increase.
Heat transfer coefficient and pressure drop were measured during condensation of steamin a vertical copper tube with and without Twined Wire Coil Inserts (TWCI), respectively. The Reynolds number range of experiment was 50 ~ 2100. Experiment results showed thatTWCI can evidently augment the heat transfer performance of steam condensation in tubewith less pressure drop increase.