An indirect solar dryer was designed and manufactured in Yamoussoukro, Côte d’Ivoire. It is equipped with three parameters including two air intake ports, a fan and a removable hot air recovery system. Vacuum CFD simulations were performed in order to observe the influence of these parameters on the effectiveness of the device. The fan switched off speeds of 9 m/s and made the air distribution uniform in the drying cabin. The natural convection operation made it possible to reach 62°C in the drying chamber compared to 55°C for the forced convection operation. The unique opening of the low air intake port in operation accentuates the temperature variations in the cabin compartments with differences of + 5°C from one level to another. The hot air return system has a positive impact on temperature trends because it allows values of 65°C to be reached inside the chamber, ideal for drying agri-food products. However, this recovery reduces the air velocity in the cabin, which is a disadvantage for the performance during products. This problem could be solved by increasing the fan power.

中文翻译：

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双回程太阳能干燥机CFD模拟

间接太阳能干燥机在科特迪瓦亚穆苏克罗设计和制造。它配备了三个参数，包括两个进气口、一个风扇和一个可拆卸的热空气回收系统。进行真空 CFD 模拟是为了观察这些参数对设备有效性的影响。风扇关闭速度为9 m/s，使干燥室内空气分布均匀。自然对流操作使干燥室的温度可以达到 62°C，而强制对流操作的温度为 55°C。运行中低进气口的独特开口会加剧客舱内的温度变化，一层与另一层之间的温度差异为 + 5°C。热空气回流系统对温度趋势具有积极影响，因为它允许室内温度达到 65°C，非常适合干燥农产品。然而，这种恢复降低了机舱内的空气流速，这对于产品期间的性能来说是不利的。这个问题可以通过增加风扇功率来解决。