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<p>High performance heat exchangers are becoming necessary for a range of industrial applications. the consequent loss of energy resources in systems like power plants, air conditioners, and food processing facilities. Improving thermal performance was a critical area for energy saving since it can lead to high-performance heat exchangers. It is possible to distinguish between three modified types of present-enhancing method for passive approaches. The dimple, tape twisted, as well corrugated tube passive heat enhancement techniques all include more surface extensions. Validating computational estimations of flow in heat exchanger tube for varying pipe surface is, thus, the primary objective of this research project. The numerical results indicate that the properties of heat and flow are more affected by differences in dimple, tape twisted, and corrugated configurations. The dependability of the simulation technique employed in this work can be confirmed by comparing the experimental and numerical results consistently. The deviation errors are smaller than 6.7% and 7.5% for Nu and f, respectively, as compared to the average pipe. The pressure decrease that results from increasing width as well thickness of twisted tape also improves fluid mixing, secondary and swirl flows in pipe. Because there is a larger difference in the velocities between the liquid layers next to tape surfaces, tube walls, and pipe core flow layers, the f value increases as tape geometrical parameters increase. As such, in comparison to conventional pipe, twisted topologies may increase from 5.4 to 33.5%. The 1 × 1 mm twisted tape has a higher thermal evaluation factor. The range of thermal assessment factor was higher than 1.7.</p>

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Thermo-hydraulics flow investigation and heat performance augmentation evaluation in 3d tube based on novel corrugated, varying insert tape and dimple configurations

  • 期刊论文

  • 发表日期：

    2025年1月3日

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  • Ahmed Ramadhan Al-Obaidi

摘要

High performance heat exchangers are becoming necessary for a range of industrial applications. the consequent loss of energy resources in systems like power plants, air conditioners, and food processing facilities. Improving thermal performance was a critical area for energy saving since it can lead to high-performance heat exchangers. It is possible to distinguish between three modified types of present-enhancing method for passive approaches. The dimple, tape twisted, as well corrugated tube passive heat enhancement techniques all include more surface extensions. Validating computational estimations of flow in heat exchanger tube for varying pipe surface is, thus, the primary objective of this research project. The numerical results indicate that the properties of heat and flow are more affected by differences in dimple, tape twisted, and corrugated configurations. The dependability of the simulation technique employed in this work can be confirmed by comparing the experimental and numerical results consistently. The deviation errors are smaller than 6.7% and 7.5% for Nu and f, respectively, as compared to the average pipe. The pressure decrease that results from increasing width as well thickness of twisted tape also improves fluid mixing, secondary and swirl flows in pipe. Because there is a larger difference in the velocities between the liquid layers next to tape surfaces, tube walls, and pipe core flow layers, the f value increases as tape geometrical parameters increase. As such, in comparison to conventional pipe, twisted topologies may increase from 5.4 to 33.5%. The 1 × 1 mm twisted tape has a higher thermal evaluation factor. The range of thermal assessment factor was higher than 1.7.