A new approach to determine the optimum tilt angle and orientation of solar collectors in mountainous areas with high altitude

Xu, Luting; Long, Enshen; Wei, Jingyu; Zhu, Cheng; Zheng, Hanjie

doi:10.1016/j.energy.2021.121507

Cited by 30 publications

(20 citation statements)

References 31 publications

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“…Abdallah et al 11 made a comparison between SR of Horizontal Surface (HS) with that of the tilted surface which is varied each month with different 15%, which is less than the SR of this paper which is 24%. Xu et al 12 suggested a technique to compute the OTA on hilly places.…”

Section: Introductionmentioning

confidence: 99%

Estimation of optimal tilt angles for photovoltaic panels in Egypt with experimental verifications

Abdelaal

El‐Fergany

2023

Sci Rep

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The principal target of this work is to compute the optimal tilt angle (OTA) for Photovoltaic (PV) panels. To perform this task, comprehensive simulations are done starting from altering the tilt angle (TA) daily, to use one fixed TA for all the year. The mathematical models for extra-terrestrial radiation (ETR) of both horizontal and inclined surfaces are presented firstly. At a later stage, the optimization formulation for the maximizing the solar radiation (SR) is adapted, and then the daily, monthly, seasonally, half-yearly and optimal fixed TAs are obtained. Although, the daily OTA produces the maximum SR, it is costly and impractical. It is found that altering the TA twice a year at optimal values that are computed as 5° and 50° for Suez city, gives the best results that are very near to the daily altering of the OTA. The difference between the two methods is 1.56% which is very small. Also, the two OTAs has SR better than that of the fixed OTA which is 28° by 7.77%. Also, it is found that the yearly fixed OTA (28°) is nearly equal to the latitude angle of Suez city which is 30°. The two OTAs method of this paper is different from the commonly used method that suggests two TAs. The first TA is used for winter months which is obtained by adding 15° to the latitude angle while the second TA is obtained by subtracting 15° from the latitude angle for the summer months. This commonly used method produces lesser SR than the two OTAs method of this paper. The theoretical work has been proved by an experimental work on two PV systems constructed at 25° and 30° TAs. The results of the experimental work agree with the theoretical results.

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Section: Introductionmentioning

confidence: 99%

Estimation of optimal tilt angles for photovoltaic panels in Egypt with experimental verifications

Abdelaal

El‐Fergany

2023

Sci Rep

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“…Although is OTA is very near to the LA, but the authors of the current study are sure that the OTA is slightly less that the LA. Xu a and Longin [9] investigated the OTA for areas with high elevation in Batang County, Sichuan, and China that has latitude 30.0054° N. They used a TA of 40 o for best performance. In [10], a comparison between two TAs is implemented in Kelantan, Malaysia.…”

Section: Introductionmentioning

confidence: 99%

Maximizing solar radiations of PV panels using artificial gorilla troops reinforced by experimental investigations

Abdelaal,

Alhamahmy,

Attia

et al. 2023

Preprint

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The aim of this work is to maximize the solar radiations (SRs) by computing the optimal tilt angle (OTA) of photovoltaic (PV) panels by using gorilla troop algorithm (GTA) along with an experimental work that consists of three PV panels rated 100 W inclined at three different tilt angles (TAs). The three TAs are 28o, 30o, and 50o. These TAs are selected based on experience and after huge simulations and physical trials. The experimental data are recorded daily for a period of 181 days and the data showed that the TA of 28o is better than that at 50o and 30. The GTA computed the OTA as 28.445o which is in agree with that obtained from the experimental investigations that has a TA of 28o. The SR of the 28o TA is higher than that of the 50o TA by 59.3% and better than the TA of 30o by 4.5%. For the sake of comparison with the GTA with other 8 metaheuristic (MHTs) recent techniques are used to find the best OTA. Most of the 8 MHTs computed the OTA as 28.445o which is the same as computed from the GTA and matches that obtained from the experimental work has a value of 28o. The experimental recorded SR difference between the 28o TA and the 50o TA was 159.3% in only 181 days which signifies the importance of having correct TA for the PV tracker.

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“…They are equally prone to heavy snow or storm damage and are often not applicable to small-scale systems such as rooftop applications due to their heavy nature. Computation [20] , algorithm [21] , and optimization [22] are recent approaches by researchers to determine optimal tilt angles. Recently, Yadav and Chandel [13] examined these approaches by comparing the results of analytical, numerical, and experimental methods to determine the suitability of a technique for a particular location.…”

Section: Introductionmentioning

confidence: 99%

Modeling and estimation of the optimal tilt angle, maximum incident solar radiation, and global radiation index of the photovoltaic system

Obiwulu

Erusiafe

Olopade

et al. 2022

Heliyon

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A new approach to determine the optimum tilt angle and orientation of solar collectors in mountainous areas with high altitude

Cited by 30 publications

References 31 publications

Estimation of optimal tilt angles for photovoltaic panels in Egypt with experimental verifications

Estimation of optimal tilt angles for photovoltaic panels in Egypt with experimental verifications

Maximizing solar radiations of PV panels using artificial gorilla troops reinforced by experimental investigations

Modeling and estimation of the optimal tilt angle, maximum incident solar radiation, and global radiation index of the photovoltaic system

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