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 wa...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.展开更多
The flow patterns, pressure drop, and heat transfer characteristics of shell and tube heat exchangers with different shell side structure were studied systematically by experiments. Experiments show that the optimal a...The flow patterns, pressure drop, and heat transfer characteristics of shell and tube heat exchangers with different shell side structure were studied systematically by experiments. Experiments show that the optimal angle of helical baffle is 40°, and the optical porosity of porous media is 0. 985. Based on this, a new oil cooler was developed for hydraulic system of mining machinery, and its heat trausfer coefficient is higher than that of the existing oil coolers.展开更多
文摘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.
文摘The flow patterns, pressure drop, and heat transfer characteristics of shell and tube heat exchangers with different shell side structure were studied systematically by experiments. Experiments show that the optimal angle of helical baffle is 40°, and the optical porosity of porous media is 0. 985. Based on this, a new oil cooler was developed for hydraulic system of mining machinery, and its heat trausfer coefficient is higher than that of the existing oil coolers.
