scholarly journals Study of the Dependence of Solar Radiation Regarding Design Variables in Photovoltaic Solar Installations with Optimal Dual-Axis Tracking

2021 ◽  
Vol 11 (9) ◽  
pp. 3917
Author(s):  
Francisco Javier Gómez-Uceda ◽  
Isabel Maria Moreno-Garcia ◽  
Álvaro Perez-Castañeda ◽  
Luis Manuel Fernández-Ahumada
Keyword(s):  
Solar Radiation ◽  
Predictive Values ◽  
Geometric Shapes ◽  
Coverage Ratio ◽  
Rotation Axes ◽  
Design Variables ◽  
Solar Tracking ◽  
Exhaustive Study ◽  
Dual Rotation ◽  
Tracking Strategy

Solar tracking is an efficient strategy to increase the radiative capture of photovoltaic collectors. Within the multiple efforts made in recent decades to improve the production of these facilities, various works have studied solutions to optimize the number of rotation axes (single or dual rotation axes), the degree of collector coverage, the distances between trackers, the geometric arrangement of trackers or the minimization of shading between collectors. However, although in this type of installation it is common to find collectors with geometric shapes other than rectangles, no studies on the influence of the shape of the collectors on the radiative incidence are found in the literature. In this connection, the present work systematically addresses the study of incident solar radiation in photovoltaic installations with dual-axis trackers with collectors of different geometric shapes. By means of the exhaustive study, the conclusion is drawn that, for dual-axis photovoltaic installations with an optimal tracking strategy, the main variables that influence the annual radiative incidence are the spacing between collectors, the coverage ratio (GCR), and the collector surface, while the type of arrangement of collectors and the shape of these do not show predictive values.

Performansi aktual modul photovoltaik dengan pengarah matahari

2018 ◽  
Vol 12 (2) ◽  
pp. 98 ◽  
Author(s):  
Jalaluddin . ◽  
Baharuddin Mire
Keyword(s):  
Solar Radiation ◽  
Local Time ◽  
Performance Characteristic ◽  
Electrical Energy ◽  
Photovoltaic Module ◽  
Experiment Data ◽  
Actual Performance ◽  
Pv Module ◽  
Solar Tracking ◽  
Pv Modules

Actual performance of photovoltaic module with solar tracking is presented. Solar radiation can be converted into electrical energy using photovoltaic (PV) modules. Performance of polycristalline silicon PV modules with and without solar tracking are investigated experimentally. The PV module with dimension 698 x 518 x 25 mm has maximum power and voltage is 45 Watt and 18 Volt respectively. Based on the experiment data, it is concluded that the performance of PV module with solar tracking increases in the morning and afternoon compared with that of fixed PV module. It increases about 18 % in the morning from 10:00 to 12:00 and in the afternoon from 13:30 to 14:00 (local time). This study also shows the daily performance characteristic of the two PV modules. Using PV module with solar tracking provides a better performance than fixed PV module. 

scholarly journals Optimal design of the solar tracking system of parabolic trough concentrating collectors

2020 ◽  
Vol 15 (4) ◽  
pp. 613-619
Author(s):  
Li Kong ◽  
Yunpeng Zhang ◽  
Zhijian Lin ◽  
Zhongzhu Qiu ◽  
Chunying Li ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Solar Radiation ◽  
Tracking System ◽  
Low Cost ◽  
Parabolic Trough ◽  
The North ◽  
Tracking Mode ◽  
Solar Tracking ◽  
East West

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°.

scholarly journals Sensorless iterative solar tracking in multiple on-grid photovoltaic generators with improved tracking strategy

2011 ◽  
pp. 818-823
Author(s):  
Guilherme F. Cittolin ◽  
Jéssica V. Mazuroski ◽  
Rafael C. Gonçalves ◽  
Marcel G. Kroetz ◽  
Carlo A.Z. Pece ◽  
...  
Keyword(s):  
Solar Tracking ◽  
Photovoltaic Generators ◽  
Tracking Strategy

Open-loop solar tracking strategy for high concentrating photovoltaic systems using variable tracking frequency

2016 ◽  
Vol 117 ◽  
pp. 142-149 ◽  
Author(s):  
Zhe Mi ◽  
Jikun Chen ◽  
Nuofu Chen ◽  
Yiming Bai ◽  
Rui Fu ◽  
...  
Keyword(s):  
Open Loop ◽  
Photovoltaic Systems ◽  
Solar Tracking ◽  
Tracking Strategy

Simplified Approaches for Solar Energy Modeling and Tracking

2010 ◽  
Author(s):  
Mohammad H. Naraghi
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Surface Orientation ◽  
Energy Modeling ◽  
Clearness Index ◽  
Index Method ◽  
Oriented Surface ◽  
Solar Tracking ◽  
Model Complex

Use of spreadsheets to model complex solar radiation calculations is described. The solar tracking equations are presented and the equations are used to determine shading on a fenestration by external horizontal and vertical shades. The orientation of window and dates were changed to observe their effect on the percentage of shades on the fenestration. Additionally, a spreadsheet based on the monthly clearness index method was used to determine monthly and annual solar radiation on an arbitrarily oriented surface. The solver of the spreadsheet was utilized to obtain the surface orientation for the maximum annual insolation.

Output Power Enhancement of Solar PV Panel Using Solar Tracking System

2019 ◽  
Vol 12 (1) ◽  
pp. 45-49
Author(s):  
Abhishek Kumar Tripathi ◽  
Mangalpady Aruna ◽  
Ch. S.N. Murthy
Keyword(s):  
Solar Radiation ◽  
Output Power ◽  
Tracking System ◽  
The Sun ◽  
Solar Pv ◽  
Design Development ◽  
Pv Panel ◽  
Solar Tracking ◽  
Power Enhancement ◽  
Panel Surface

Solar Photovoltaic (PV) energy conversion has gained much attention nowadays. The output power of PV panel depends on the condition under which the panel is working, such as solar radiation, ambient temperature, dust, wind speed and humidity. The amount of falling sunlight on the panel surface (i.e., solar radiation) directly affects its output power. In order to maximize the amount of falling sunlight on the panel surface, a solar tracking PV panel system is introduced. This paper describes the design, development and fabrication of the solar PV panel tracking system. The designed solar tracking system is able to track the position of the sun throughout the day, which allows more sunlight falling on the panel surface. The experimental results show that there was an enhancement of up to a 64.72% in the output power of the PV panel with reference to the fixed orientation PV panel. Further, this study also demonstrates that the full load torque of the tracking system would be much higher than the obtained torque, which is required to track the position of the sun. This propounds, that the proposed tracking system can also be used for a higher capacity PV power generation system.

Terrestrial Solar Radiation

2017 ◽  
pp. 191-293
Keyword(s):  
Solar Radiation ◽  
Horizontal Plane ◽  
Cloud Cover ◽  
Weather Conditions ◽  
Clear Sky ◽  
Solar Tracking ◽  
Sky Conditions ◽  
The Impact ◽  
Estimation Models

After shading a light on the extraterrestrial solar radiation in the chapter 3 it is important to evaluate the global terrestrial solar radiation and its components. The information on terrestrial solar radiation is required in several different forms depending on the kinds of calculations and kind of application that are to be done. Of course, terrestrial solar radiation on the horizontal plane depends on the different weather conditions such as cloud cover, relative humidity, and ambient temperature. Therefore, the impact of the atmosphere on solar radiation should be considered. One of the most important points of terrestrial solar radiation evaluation is its determination during clear sky conditions. Therefore, in this chapter, the equations that determine the air mass basing on available theories are given and the clear sky conditions are introduced with shading a light on the previous work in identifying clear sky conditions. Taking into consideration that, clear sky solar radiation estimation is of great importance for solar tracking, a detailed review of main available models is given in this chapter. As daily, monthly, seasonally, biannually and yearly mean daily solar radiations are required information for designing and installing long term tracking systems, different available methods are commented regarding their applicability for the estimation of solar radiation information in the desired format from the data that are available. An important accent is paid also on the assessment and comparison of monthly mean daily solar radiation estimation models.

Building Mass Reconfiguration as an Energy-Sensitive Design Strategy for Green Campus Implementation

2020 ◽  
Author(s):  
Nabila Afif ◽  
Agus Hariyadi ◽  
Nedyomukti Imam Syafii ◽  
Esti Setyaning Jati
Keyword(s):  
Solar Radiation ◽  
Digital Simulation ◽  
Design Strategy ◽  
Coverage Ratio ◽  
Average Value ◽  
Cluster Area ◽  
Three Stages ◽  
Green Campus ◽  
The University

Universitas Gadjah Mada (UGM) is implementing the concept of green campus by various means including through elements in its sustainable campus development plan. With regards to several factors related to Energy and Climate Change indicators set by UI GreenMetric, this research examined the existing condition of the area of UGM which belongs to academic zone in order to construct a proposal based on a building mass reconfiguration. This proposal was aimed to improve the implementation of energy-specific green campus concept within the Forestry cluster area as a sample case study. This selection was based on the average value of the Building Coverage Ratio (BCR) values in all of the clusters; thus, the scenario was relevant for generalization and could be replicated in other clusters in the university. The study was done in three stages of simulation, and was based on a series of digital simulation of sunlight hour and solar radiation run in Grasshopper using Lady Bug environmental analysis plug-in for a period of five summer months during the building office hours. Following the reconfiguration, results had shown a similar downtrend between the amount of sunlight hour and solar radiation in the area (up to 49% and 45% respectively on building envelopes, and up to 44% and 42% respectively on landscaping surfaces). This reduction indicated a potential of energy efficiency by applying selective building mass reconfiguration as a passive design strategy that goes hand in hand with the campus’s development policy to optimize the use of BCR for a greener UGM campus through its many undergoing and upcoming redevelopment projects.

scholarly journals A study of the skylight coverage ratio for air-conditioned atriumsin the hot and humid regions

2021 ◽  
Author(s):  
Siwei Lou ◽  
Yu Huang ◽  
Dawei Xia ◽  
Isaac Y F Lun ◽  
Danny H W Li
Keyword(s):  
Solar Radiation ◽  
Energy Performance ◽  
Cooling Load ◽  
Total Energy Consumption ◽  
Coverage Area ◽  
Solar Heat ◽  
Coverage Ratio ◽  
Lighting Control ◽  
Hot And Humid Climates ◽  
Daylight Performance

Abstract The skylight on the roof of an atrium can be popular for commercial malls to illuminate the core area of the building. However, the solar radiation and its heat can get into the building together with the daylight, causing excessive cooling load. This paper studies the daylighting and energy performances of skylight coverage area for the air-conditioned atriums in the hot and humid regions. The energy performance with different atrium heights, glass types and the coverage ratios of the skylight are studied. The daylight performance was simulated by the ray-tracing Radiance and was transferred into EnergyPlus for energy evaluations. The finding suggested that, for hot and humid climates, the skylight coverage ratio should be controlled carefully to prevent the excessive solar heat gain. When the on/off lighting control is applied, the total energy consumption of the single-floor cases (or of the top floor for the multi-floor cases) leveled off when the coverage ratio of the skylight reached 9%. Thus, the skylight is favorable to the energy saving of the low-rise or single-floor commercial buildings only under the current assumptions, as the ground of the atrium cannot be well illuminated while the excessive solar radiation gets into the building. The skylight should be shaded in cooling seasons to prevent the excessive solar heat gains.

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