scholarly journals A New Model for Estimation of Energy Extraction from Bifacial Photovoltaic Modules

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5089
Author(s):  
Preeti Kumari Sahu ◽  
J. N. Roy ◽  
Chandan Chakraborty ◽  
Senthilarasu Sundaram
Keyword(s):  
Tilt Angle ◽  
Geographical Location ◽  
Performance Ratio ◽  
Real Field ◽  
Photovoltaic Module ◽  
Rear Side ◽  
Energy Yield ◽  
Solar Photovoltaic ◽  
The Cost ◽  
The Impact

The energy yield from bifacial solar photovoltaic (PV) systems can be enhanced by optimizing the tilt angle. Bifacial modules boost the energy yield by 4% to 15% depending on the module type and ground reflectivity with an average of 9%. The selection of tilt angle depends on several factors, including the geographical location, weather variation, etc. Compared to the variable tilt angle, a constant angle is preferred from the point of view of the cost of installation and the cost of maintenance. This paper proposes a new method for analysing bifacial modules. A simpler rear-side irradiance model is presented to estimate the energy yield of a bifacial solar photovoltaic module. The detailed analysis also explores the optimum tilt angle for the inclined south–north orientation to obtain the maximum possible yield from the module. Taking four regions into account, i.e., Kharagpur, Ahmedabad, Delhi, and Thiruvananthapuram, in the Indian climate, we studied several cases. The Kharagpur system showed a monthly rear irradiance gain of 13%, and the Delhi climate showed an average performance ratio of 19.5%. We studied the impact of albedo and GCR on the tilt angle. Finally, the estimated model was validated with the PVSyst version 6.7.6 as well as real field test measurements taken from the National Renewable Energy Laboratory (NREL) located in the USA.

Does opening high-speed railways affect the cost of debt financing? A quasi-natural experiment

2020 ◽  
Vol 10 (4) ◽  
pp. 473-496
Author(s):  
Hongling Guo ◽  
Keping Wu
Keyword(s):  
High Speed ◽  
Geographical Location ◽  
Debt Financing ◽  
Cost Of Debt ◽  
High Speed Railway ◽  
Content Type ◽  
Financing Cost ◽  
Debt Market ◽  
The Cost ◽  
The Impact

PurposeThis study aims to investigate how opening high-speed railways affects the cost of debt financing based on China's background.Design/methodology/approachUsing panel data on Chinese listed firms from 2008 to 2017, this study constructs a quasi-natural experiment and adopts a difference-in-difference model with multiple time periods to empirically examine the relation between the high-speed railway openings and debt financing cost.FindingsOur results show that opening high-speed railways reduces the cost of debt financing, and this negative correlation is more significant in non-state firms, firms with weaker internal control, and firms that hire non-Big Four auditors. Besides, we explore the impact mechanisms and find that opening high-speed railways improves analyst attention, institutional investor participation, and information disclosure quality, which in turn lowers the cost of debt financing.Research limitations/implicationsThe results imply that the opening of high-speed railways helps to alleviate the information asymmetry and adverse selection between firms and creditors and ultimately reduces the cost of corporate debt financing.Practical implicationsThis paper can inform firms and stakeholders about the impact of opening high-speed railways on debt financing cost: it improves the information environment, reduces the geographical location restrictions of debt financing, ensures the reasonable pricing of corporate debt, and thus promotes the healthy and sound development of the debt market.Originality/valueThis paper provides theoretical support and empirical evidence for the impact of infrastructure construction on the information environment of the debt market in China, which enriches the research on the “high-speed railway economy.” In addition, as an exogenous event, the opening of high-speed railways instantly shortens the time distance between firms and external stakeholders, which gives us a natural environment to conduct empirical research, thus providing a new perspective for financial research on firms' geographical location.

scholarly journals Impact Study on Power Generation from Photovoltaic System due to Change in Local Irradiance and Temperature at Kathmandu Valley, Nepal

2017 ◽  
Vol 12 (1) ◽  
pp. 1-9
Author(s):  
Manish Shrestha ◽  
Nawraj Bhattarai
Keyword(s):  
Meteorological Data ◽  
Operating Conditions ◽  
Photovoltaic System ◽  
Photovoltaic Module ◽  
Kathmandu Valley ◽  
Solar Photovoltaic ◽  
Impact Study ◽  
Simulation And Experiment ◽  
Solar Photovoltaic System ◽  
The Impact

Solar Photovoltaic system has become popular among the renewable energy due to free availability and low maintenance costs. Economically, the decreasing cost from continuous development adds another motive for the use of photovoltaic system. There has been a continuous study regarding the estimation on output of the photovoltaic system, in normal operating conditions. The output is subject to variations due to various environmental factors. The aim of this study is to evaluate how Design of Experiments (DoE) Method is used to model the impact of meteorological data on the electric power generated by the photovoltaic system. In this paper, the simulation and experiment based analysis has been presented and the degree of impact of irradiance and temperature on the output power of the photovoltaic module has been illustrated.Journal of the Institute of Engineering, 2016, 12(1): 1-9

scholarly journals Numerical Modeling of Bifacial PV String Performance: Perimeter Effect and Influence of Uniaxial Solar Trackers

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 869 ◽  
Author(s):  
Fabio Ricco Galluzzo ◽  
Pier Enrico Zani ◽  
Marina Foti ◽  
Andrea Canino ◽  
Cosimo Gerardi ◽  
...  
Keyword(s):  
Experimental Data ◽  
System Performance ◽  
Geographical Location ◽  
Performance Model ◽  
Rear Side ◽  
Energy Yield ◽  
Pv System ◽  
Latitude Range ◽  
Accurate Performance ◽  
Solar Tracker

The bifacial photovoltaic (PV) systems have recently met large interest. The performance of such systems heavily depends on the installation conditions and, in particular, on the albedo radiation collected by the module rear side. Therefore, it is of crucial importance to have an accurate performance model. To date, in the scientific literature, numerous models have been proposed and experimental data collected to study and optimize bifacial PV system performance. Currently, 3D and 2D models of bifacial PV devices exist. Though the former are more mathematically complex, they can lead to more accurate results, since they generally allow to fully consider the main aspects influencing a bifacial PV system performance. Recently, we have proposed and validated through experimental data a 3D model tested as a function of module height, tilt angle, and ground albedo. In this work, through such a model, we studied the role played by the perimeter zones surrounding the PV string, by considering PV strings of 30 or 60 modules. We considered the cases of fixed installation with optimal PV module tilt and of installation with uniaxial horizontal solar tracker. We evaluated the PV energy yield as a function of the size of the perimeter zones for the two cases, i.e., both with and without the solar tracker. In optimal perimeter conditions, we then studied the behavior of bifacial and mono-facial PV strings by varying the geographical location in a large latitude range.

A simulation study on the impact of band gap profile variations and secondary barriers on the temperature behavior, performance ratio, and energy yield of Cu(In,Ga)(Se,S)2solar cells

2014 ◽  
Vol 212 (2) ◽  
pp. 336-347 ◽  
Author(s):  
Christian Schubbert ◽  
Patrick Eraerds ◽  
Michael Richter ◽  
Jürgen Parisi ◽  
Ingo Riedel ◽  
...  
Keyword(s):  
Band Gap ◽  
Simulation Study ◽  
Temperature Behavior ◽  
Performance Ratio ◽  
Energy Yield ◽  
The Impact

scholarly journals CHOICE OF METHODS OF ORGANIZATION OF INTERNATIONAL CARRIAGE OF CONSIGNMENTS IN LOGISTICAL CHAINS

2020 ◽  
Vol 2 (47) ◽  
pp. 163-172
Author(s):  
Svirin D ◽  
Keyword(s):  
Arrival Time ◽  
Geographical Location ◽  
Customer Requirements ◽  
Road Transportation ◽  
Delivery Methods ◽  
Effective Delivery ◽  
Cargo Transportation ◽  
Object Of Study ◽  
The Cost ◽  
The Impact

The article deals with the methods of delivery of ICCLC, such as: through, terminal, prefabricated and more. The influence of factors on the choice of a method of delivery of ICCLC. The object of study is the process of international road transportation of goods. The purpose of the work is to develop the main stages of the methodology of choosing the methods of the organization of ICCLC, depending on the conditions of transportation and customer requirements. To increase the efficiency of the ICCLC, one of the important tasks that carriers and freight forwarders solve is the choice of methods for organizing the ICCLC in logistics chains. It is advisable to use effective delivery methods in certain conditions of transportation, such as through, terminal, prefabricated, terminal (traction shoulders) and others. When choosing these methods, many factors are taken into account, such as the partisanship of international road transportation of goods, the geographical location of shippers and consignees, the state of highways and more. When organizing ICCLC using the above methods, different combinations are possible related to the particularities of transportation in the countries of departure and destination and the requirements of the cargo owners. The choice of the method of ICCLC organization is influenced by the criteria of ICCLC efficiency (for example, the time of delivery of goods, the cost of 1 km run of vehicle, the cost of 1 tkm of transport work, etc.). In addition to the above criteria, which help to determine the effectiveness of a particular method of delivery of goods, the rationality of the method in each individual situation depends on the possibility of the arrival of vehicle for unloading at the appointed time. This is because of the arrival time of the vehicle must be linked to other operations occurring at the terminal. The main stages of the methodology for selecting the organization of ICCLC are developed, taking into account the above factors and the impact of criteria on them. KEYWORDS: PARTITIONALITY, METHODS OF ORGANIZATION OF INTERNATIONAL CARGO TRANSPORTATION.

scholarly journals Reliability Study of c-Si PV Module Mounted on a Concrete Slab by Thermal Cycling Using Electroluminescence Scanning: Application in Future Solar Roadways

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 470 ◽  
Author(s):  
Firoz Khan ◽  
Béchir Dridi Rezgui ◽  
Jae Hyun Kim
Keyword(s):  
Thermal Cycling ◽  
Concrete Slab ◽  
Stress Test ◽  
Real Field ◽  
Solar Photovoltaic ◽  
The Real ◽  
Pv Module ◽  
Pv Modules ◽  
Degradation Behaviors ◽  
The Impact

Several tests were conducted to ratify the reliability and durability of the solar photovoltaic (PV) devices before deployment in the real field (non-ideal conditions). In the real field, the temperature of the PV modules was varied during the day and night. Nowadays, people have been bearing in mind the deployment of PV modules on concrete roads to make use of the space accessible on roads. In this regard, a comparative study on the failure and degradation behaviors of crystalline Si PV modules with and without a concrete slab was executed via a thermal cycling stress test. The impact of the concrete slab on the performance degradation of PV modules was evaluated. Electroluminescence (EL) results showed that the defect due to thermal cycling (TC) stress was reduced in the PV module with a concrete slab. The power loss due to the thermal cycling was reduced by approximately 1% using a concrete slab for 200 cycles. The Rsh value was reduced to approximately 91% and 71% after thermal cycling of 200 cycles for reference PV modules, respectively. The value of I0 was increased to approximately 3.1 and 2.9 times the initial value for the PV modules without and with concrete, respectively.

scholarly journals Thermal and electrical energy yield analysis of a directly water cooled photovoltaic module

2016 ◽  
Vol 20 (1) ◽  
pp. 155-163
Author(s):  
Busiso Mtunzi ◽  
Edson Meyer ◽  
Simon Michael
Keyword(s):  
High Performance ◽  
Electrical Power ◽  
Electrical Energy ◽  
Performance Ratio ◽  
Photovoltaic Module ◽  
Energy Yield ◽  
Photovoltaic Modules ◽  
Utility Company ◽  
Electrical Power Output ◽  
Font Color

Electrical energy of photovoltaic modules drops by 0.5% for each degree increase in temperature. Direct water cooling of photovoltaic modules was found to give improved electrical and thermal yield. A prototype was put in place to analyse the field data for a period of a year. The results showed an initial high performance ratio and electrical power output. The monthly energy saving efficiency of the directly water cooled module was found to be approximately 61%. The solar utilisation of the naturally cooled photovoltaic module was found to be 8.79% and for the directly water cooled module its solar utilisation was 47.93%. Implementation of such systems on households may reduce the load from the utility company, bring about huge savings on electricity bills and help in reducing carbon emissions. <br><br><font color="red"><b> This article has been retracted. Link to the retraction <u><a href="http://dx.doi.org/10.2298/TSCI160407082E">10.2298/TSCI160407082E</a><u></b></font>

scholarly journals Performance evaluation of roof top solar photovoltaic systems in Tamilnadu

2019 ◽  
Vol 8 (3) ◽  
pp. 265
Author(s):  
M. Aravindan ◽  
V. Balaji ◽  
V. Saravanan ◽  
M. Arumugam
Keyword(s):  
Power Plants ◽  
Performance Ratio ◽  
Electricity Production ◽  
Energy Yield ◽  
Solar Photovoltaic ◽  
Pv System ◽  
System Output ◽  
And Performance ◽  
Bad Weather ◽  
Performance Results

This manuscript reports the monitored performance results of roof top solar photovoltaic (PV) power plants in different parts of Tamilnadu, India. In this work, PV plants of capacities 84 kWp and 18 kWp located at Tirunelveli and Ranipet respectively in Tamilnadu are considered. During an eight month period, of September 2014 to April 2015, these plants had generated 43.99 MWh and 15.55 MWh units of electricity respectively. The average electricity production per day for the considered period of these plants is 181.74 kWh and 62.81 kWh respectively. The performance ratio (PR) of these plants PV1 and PV2 is found to be 0.52 and 0.86 respectively. The characteristics of poly crystalline PV modules and the performance of employed photovoltaic inverters are also analyzed.It is observed that external conditions like climate and bad weather significantly reduces the PV system output, whereas it reduces marginally due to inverter failure as observed from the values of energy yield and performance ratio of these plants. Online monitoring of PV plant with DC/AC line and phase voltages and current waveforms observed for the given day are also presented.

scholarly journals Efficiency Comparison of Different Photovoltaic Modules

2019 ◽  
Vol 22 (1) ◽  
pp. 5-11 ◽  
Author(s):  
Atsu Divine Kafui ◽  
István Seres ◽  
István Farkas
Keyword(s):  
Technology Development ◽  
Monocrystalline Silicon ◽  
Performance Ratio ◽  
Photovoltaic Module ◽  
Transparent Glass ◽  
Average Performance ◽  
Photovoltaic Modules ◽  
Operation Conditions ◽  
Conversion Rates ◽  
The Impact

Abstract Solar photovoltaic power generation capacity is rising continuously as a result of various regional, sub-regional renewable energy policies and the impact of technology development, as well as the increasing environmental concerns. Characteristics of photovoltaic modules are provided by manufacturers after they have been tested indoors under standard test conditions. These parameters may vary under exterior conditions. It is thus imperative to establish the quantity of the energy produced by photovoltaic modules under real operation conditions. This study sought to assess the performance of different kinds of photovoltaic module technologies in the city of Gödöllő, Hungary, and ascertain the behaviour of the modules under real outdoor conditions. Modules include amorphous silicon (a-Si), monocrystalline silicon (mc-Si), polycrystalline silicon (pc-Si), transparent monocrystalline silicon module (mc-Si). Measurement of the module characteristics was performed and various meteorological parameters were obtained. Performance parameters such as performance ratio and efficiency are given and analysed. Module temperature was estimated and evaluated in comparison with experimental values. Energy conversion rates of the modules were determined as 9.4%, 4.4%, 10.3%, 8.2% and 10.4% for mc-Si module transparent glass (165 Wp), a-Si module (glass 40Wp), pc-Si module (105 Wp), pc-Si module (60 Wp) and mc-Si (PV-T 180 Wp), respectively. Under the given outdoor conditions, the highest average performance ratio of 85.2% was obtained for the mc-Si module (transparent glass, 165 Wp), exhibiting the best performance, while pc–Si module (60 Wp) showed the least average performance ratio of 71.8%.

scholarly journals Study of dust deposition and temperature impact on solar photovoltaic module

2018 ◽  
Vol 240 ◽  
pp. 04005 ◽  
Author(s):  
Marek Jaszczur ◽  
Qusay Hassan ◽  
Janusz Teneta ◽  
Katarzyna Styszko ◽  
Weronika Nawrot ◽  
...  
Keyword(s):  
Dust Exposure ◽  
Photovoltaic Module ◽  
Solar Photovoltaic ◽  
Dust Deposition ◽  
Pv System ◽  
City Environment ◽  
Temperature Impact ◽  
Module Performance ◽  
The Impact ◽  
The City

This work investigates the effect of the dust deposition and temperature on the photovoltaic module working under varying environmental conditions. The impact of the module temperature caused by the dust deposition, as well as direct impact caused by the dust particle absorption, scattering and reflectance on module performance, has been analysed. Presented results showed that dust deposition even in desert free country Poland influences the module temperature and power output significant. The estimated join effect of dust deposition and temperature increase, on power loss after three-four days of natural dust exposure in the city environment, was about 0.32 and 0.37 point of percentage for the selected sunny and cloudy days while evaluated PV system efficiency was in the range 13.37-14.14%.

Sign in / Sign up

Export Citation Format

Share Document