The present experimental study, the thermal performance of a solar air dryer with solar tracking system was investigated. Solar air collector (SAC) has been provided with solar tracking feature using a programmable logic control system that has not been used before. The SAC has been two-direction solar tracking feature with this system. The designed moving SAC was combined with a drying cabinet to obtain a solar air collector dryer (SACD). A fixed SACD, which is the same dimensions with the moving SACD, was designed to compare the performance of the moving SACD. In order to compare the thermal and the drying efficiencies of both systems, 14 mm thick apple slices were dried simultaneously. Depending on fan speed, in the moving and fixed SACD, the activation energy and effective moisture diffusivity values ranged from 0.062 × 10⁻⁷ to 0.084 × 10⁻⁷ m²/s and 33.2–40.01 kJ/mol and 0.031 × 10⁻⁶ to 0.049 × 10⁻⁶ m²/s and 16.4–22.9 kJ/mol, respectively. Convective heat transfer coefficient of apple slices showed changes in ranges 17.475–21.818 W/m²K in the moving SACD, and 13.215–20.846 W/m²K in the fixed SACD. The solar air collector thermal efficiency was calculated as 75.7% and 51.7% about in the moving and fixed SACD, respectively.

本实验研究了带有太阳跟踪系统的太阳能空气干燥器的热性能。太阳能空气收集器（SAC）使用以前未使用的可编程逻辑控制系统提供了太阳能跟踪功能。SAC具有此系统的双向太阳能跟踪功能。将设计好的移动式SAC与干燥柜组合在一起，以获得太阳能集热器干燥器（SACD）。固定SACD与移动SACD的尺寸相同，旨在比较移动SACD的性能。为了比较两个系统的热效率和干燥效率，同时干燥了14毫米厚的苹果片。根据风扇速度，在移动和固定SACD中，活化能和有效水分扩散率值的范围为0.062×10^{分别为−7}至0.084×10 ^-7  m ² / s和33.2–40.01 kJ / mol和0.031×10 ^-6至0.049×10 ^-6  m ² / s和16.4–22.9 kJ / mol。苹果片的对流热传递系数显示出范围变化17.475-21.818 W /米² K的移动SACD，和13.215-20.846 W /米² K的固定SACD。在移动和固定SACD中，太阳能集热器的热效率分别约为75.7％和51.7％。