Research Information System
Applied Thermal Engineering, vol.274, 2025 (SCI-Expanded)
Indirect evaporative cooling effectively reduces energy consumption while enhancing thermal comfort. This study addresses a research gap by investigating dynamic thermal performance of a novel multi-vent dry channel configuration. Two methodologies are employed: time-independent assessments of inlet conditions and time-dependent evaluations under varying climatic conditions. The novelty of this work lies in the construction of multi-vent channel, which enhances cooling effectiveness without adding moisture to the air. The results demonstrate significant improvements, with outlet temperatures decreasing by 8.8 %, 14.3 %, 15.8 %, and 7.8 % across different cases compared to conventional operational parameters. The impact of heat exchanger dimensions on IEC performance was examined revealing that increasing channel gap from 0.021 m to 0.063 m improved the temperature difference from 9.82 °C to 12.36 °C. The highest dewpoint effectiveness of 87.5 % was achieved for a channel gap between 0.063 m and 0.084 m, while an optimal gap of (0.042 m–0.063 m) maximized cooling capacity at approximately 13.5 kW. Additionally, the coefficient of performance reached 6.3 at 8 g/kg humidity and 5.0 at 12 g/kg humidity. The findings also indicate a dew point effectiveness of 23 % and a wet bulb effectiveness of 77 % under lower humidity conditions. Comparative analysis confirms that the proposed novel configuration significantly enhances thermal performance, highlighting its potential for improving cooling effectiveness across diverse ambient conditions.