Akademik Veri Yönetim Sistemi
International Journal of Thermal Sciences, cilt.227, 2026 (SCI-Expanded, Scopus)
Condensation is a crucial physical phenomenon with significant applications in power generation and refrigeration. Nevertheless, the thermal efficiency of traditional heat exchangers is constrained, prompting the exploration of advanced enhancement techniques. This research introduces an innovative method for intensifying steam condensation through the use of a vibrating slashed strip turbulator. A comprehensive analysis was conducted on its operational parameters and geometric characteristics, including vibration frequency (0–80 Hz), slash geometry (V-shaped, semicircular, rectangular), slash pitch (p = 5–15 mm), and steam flow range (FR = 0.002-0.005 kg/s). The findings indicate that an increase in vibration frequency markedly enhances heat transfer. At 80 Hz, the Nusselt number increases to 1.95 times that of a plain tube, while the peak thermal enhancement factor (TEF) is observed at 60 Hz. Although the addition of slashes typically diminishes heat transfer, the V-shaped geometry distinctly enhances TEF. The pitch of the turbulator also significantly influences performance; a larger pitch improves both heat transfer and TEF. The optimal TEF of 1.43 is attained at 60 Hz with V-shaped slashes and a pitch of p = 5 mm, leading to a 1.74-fold increase in the Nusselt number, a 1.8-fold increase in the friction factor, and a 9.1 °C reduction in wall temperature compared to a plain tube. Furthermore, the implementation of the optimized turbulator boosts the condensation capacity of the examined heat exchanger from 0.003 kg/s to 0.005 kg/s. In summary, the proposed turbulator design presents considerable potential for condenser downsizing in power plants, yielding significant energy savings and reduced material requirements.