عقیل ایرانمنش

Growing concerns about greenhouse gases and pollution drive interest in solar ventilation devices for preheating air, improving energy efficiency, and reducing reliance on conventional heating. This study investigates a solar ventilation device enhanced with phase change material (PCM) to increase air temperature rise. The device uses a copper absorber plate and double-glazed glass to maximize energy absorption and minimize heat loss. PCM, (Sodium carbonate sulfate) stores thermal energy, stabilizing performance and extending operation. Experiments were conducted in Jiroft city, and the improved system with PCM was compared and validated with numerical simulations. Fluctuations in ambient conditions created transient operation, considered in the analysis. A chimney effect aided air circulation. The PCM-enhanced system reached a maximum air outlet temperature of 74.1 °C, compared to 82.6 °C without PCM, demonstrating PCM's benefits. The correlation coefficient between experimental and theoretical data was approximately 95%. In addition, the highest and lowest relative errors between experimental and numerical results were about 0.13% to 8.72%, respectively.