scholarly journals Determination of thermal and drying performances of the solar air dryer with solar tracking system: Apple drying test

2020 ◽  
Vol 21 ◽  
pp. 100731 ◽  
Author(s):  
Mehmet Das ◽  
Ebru Kavak Akpinar
2020 ◽  
Vol 15 (4) ◽  
pp. 613-619
Author(s):  
Li Kong ◽  
Yunpeng Zhang ◽  
Zhijian Lin ◽  
Zhongzhu Qiu ◽  
Chunying Li ◽  
...  

Abstract The present work aimed to select the optimum solar tracking mode for parabolic trough concentrating collectors using numerical simulation. The current work involved: (1) the calculation of daily solar radiation on the Earth’s surface, (2) the comparison of annual direct solar radiation received under different tracking modes and (3) the determination of optimum tilt angle for the north-south tilt tracking mode. It was found that the order of solar radiation received in Shanghai under the available tracking modes was: dual-axis tracking > north-south Earth’s axis tracking > north-south tilt tracking (β = 15°) > north-south tilt tracking (β = 45) > north-south horizontal tracking > east-west horizontal tracking. Single-axis solar tracking modes feature simple structures and low cost. This study also found that the solar radiation received under the north-south tilt tracking mode was higher than that of the north-south Earth’s axis tracking mode in 7 out of 12 months. Therefore, the north-south tilt tracking mode was studied separately to determine the corresponding optimum tilt angles in Haikou, Lhasa, Shanghai, Beijing and Hohhot, respectively, which were shown as follows: 18.81°, 27.29°, 28.67°, 36.21° and 37.97°.


This is dual axis tracking system, the path of the sun is been tracked by the system is been determined in this procedure. The optimization goal is to increase the amount of generation energy with the help photovoltaic system considering the tracking system consumption. Determination of the tilt angle and azimuth angle trajectories is described as a nonlinear and bounded optimization problem, in future there will be drastic amount of shortage of non-renewable energy resources, we have to replace these resources ,For collection of solar energy we need to improve of efficiency we used sensors (LDR) for tracking of suns path to make sure that the panel should be placed in MPPT- (maximum power point tracking) to observe more efficiency to make sure that the panel should be placed in MPPT point.


2004 ◽  
Vol 126 (1) ◽  
pp. 668-670
Author(s):  
Anand M. Sharan

This paper deals with the calculation of the wind forces on the bearings of a solar tracking system. The forces involved are three dimensional-normal, and drag forces which act on the solar panel. These calculations are done in a rotating frame, and subsequently, they are transformed to a stationary frame. The effect of the weight forces of the solar panel is also included.


Author(s):  
Adven Masih ◽  
Murodbek Safaraliev ◽  
Karomatullo Mukhmudov ◽  
Ismoil Odinaev ◽  
Bukhtiyor Ghoziev ◽  
...  

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