Alsakran Amena Ali, Younis Omar Shahat, Székács András, Saeed Omar, Eid Mohamed Hamdy, Majrashi Ali, Ahmed Atef Fathy, Tantawy Aml Abubakr, Elwakeel Abdallah Elshawadfy
Department of Biology, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, 11942, Al-Kharj, Saudi Arabia.
Food Manufacturing Engineering and Packaging Department, Agriculture Research Center, Food Technology Research Institute, Giza, Egypt.
Sci Rep. 2025 Jul 17;15(1):25893. doi: 10.1038/s41598-025-11230-4.
This study evaluates the performance of an evacuated tube indirect solar dryer (ETISD) for drying tilapia strips at three thicknesses (4, 8, and 12 mm) using computational fluid dynamics (CFD), energy-exergy analysis, and sustainability indicators. CFD simulations were employed to analyze airflow patterns, temperature distribution, and velocity profiles inside the drying room (DR) across five air velocities (0.02-0.06 m/s). The optimal air flow rate of 0.03 m/s provided a uniform drying temperature of 74.82 °C, at solar noon. Simulations over two consecutive drying days (8 a.m.-5 p.m.) further assessed thermal and aerodynamic behavior, enhancing system optimization. Energy analysis revealed that the evacuated tube solar collector (ETSC) achieved a maximum input energy of 1311.8 W and useful energy of 682.5 W, with energy efficiencies of 44.5-51.2% (ETSC) and 16.18-21.57% (ETISD). Exergy efficiencies ranged from 8.51 to 21.99% (ETSC) and 29.23-84.76% (ETISD), highlighting thermodynamic performance. Sustainability indicators, including improvement potential (IP) (2.71-6.69 W), waste exergy ratio (WER) (1.15-1.36), and sustainability index (SI) (1.09-1.28), demonstrated the system's environmental and operational viability. These findings underscore the ETISD's effectiveness for sustainable tilapia drying, balancing energy efficiency, thermal performance, and ecological impact.
本研究使用计算流体动力学（CFD）、能量-火用分析和可持续性指标，评估了一种真空管间接太阳能干燥器（ETISD）在三种厚度（4毫米、8毫米和12毫米）下干燥罗非鱼条的性能。CFD模拟用于分析干燥室（DR）内五种风速（0.02-0.06米/秒）下的气流模式、温度分布和速度剖面。0.03米/秒的最佳空气流速在太阳正午时提供了74.82°C的均匀干燥温度。连续两个干燥日（上午8点至下午5点）的模拟进一步评估了热和空气动力学行为，增强了系统优化。能量分析表明，真空管太阳能集热器（ETSC）实现的最大输入能量为1311.8瓦，有用能量为682.5瓦，能量效率为44.5-51.2%（ETSC）和16.18-21.57%（ETISD）。火用效率范围为8.51-21.99%（ETSC）和29.23-84.76%（ETISD），突出了热力学性能。可持续性指标，包括改进潜力（IP）（2.71-6.69瓦）、废火用比（WER）（1.15-1.36）和可持续性指数（SI）（1.09-1.28），证明了该系统的环境和运行可行性。这些发现强调了ETISD在可持续罗非鱼干燥方面的有效性，平衡了能源效率、热性能和生态影响。
