Effect of Zn-H20 Nanofluid Back-Flow Channels on the Efficiency and Electrical Power Output of a Solar PV Panel Used in Standalone PV System

2018 ◽  
Author(s):  
M Saad Bin Arif ◽  
Shahrine M. Avob ◽  
S M Yahya ◽  
Uvais Mustafa ◽  
Muhammad Ado ◽  
...  
Keyword(s):  
Power Output ◽  
Electrical Power ◽  
Solar Pv ◽  
Pv System ◽  
Back Flow ◽  
Pv Panel ◽  
Flow Channels ◽  
Electrical Power Output

The Effects of Photovoltaic Panel’s Temperature towards Photovoltaic Electrical Power Output

2021 ◽  
Vol 02 (02) ◽  
Author(s):  
Nor Izzati Mohd Salleh ◽  
◽  
Ahmad Fateh Mohamad Nor ◽  
Siti Amely Jumaat ◽  
Jabbar Al-Fattah Yahaya ◽  
...  
Keyword(s):  
Band Gap ◽  
Power Output ◽  
Electrical Power ◽  
Open Circuit ◽  
The Sun ◽  
Pv System ◽  
Pv Systems ◽  
Pv Panel ◽  
Electrical Power Output ◽  
Increasing Temperature

Photovoltaic (PV) system is recognized as one of the most current renewable energy types in producing electrical power. The theories that science explain related to the function of the sun is in accordance with what is also described in the Qur'an. There is one ayah Quran related to the Greatness of Allah and The Mercy which is “And from among His Signs are the night and the day, and the sun and the moon. Prostrate yourselves to Allah Who created them, if you (really) worship Him [Fussilat:37]. However, one of the main issues of PV system is that the performance of the system is highly dependent to environmental conditions such as weather and solar irradiance. Increases in temperature reduce the band gap of a semiconductor. The decrease in the band gap of a semiconductor with increasing temperature can be viewed as increasing the energy of the electrons in the material. The parameter most affected by an increase in temperature is the open circuit voltage. Temperature coefficient indicates how much will be the decrement in power output if PV module. Hence, it is important to predict the actual generating output power of PV systems. This study investigates the relationship between the temperatures of the PV panel with the PV power output. The PV systems installed at the rooftop of Mega label SDN. BHD. with type of poly-crystalline 405.72KWP has been chosen as the reference system in this study. The results have shown that the rise of PV panel’s temperature will make the value of the PV electrical power output decreases.

Experimental Investigation of a Flat Plate Photovoltaic/Thermal Collector

2018 ◽  
Author(s):  
Mohamad Modrek ◽  
Ali Al-Alili
Keyword(s):  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Power Output ◽  
Electrical Power ◽  
Solar Thermal ◽  
Pv Panel ◽  
Solar Thermal Collectors ◽  
Electrical Power Output ◽  
Electrical Output

Photovoltaic thermal collectors (PVT) combines technologies of photovoltaic panels and solar thermal collectors into a hybrid system by attaching an absorber to the back surface of a PV panel. PVT collectors have gained a lot of attention recently due to the high energy output per unit area compared to a standalone system of PV panels and solar thermal collectors. In this study, performance of a liquid cooled flat PVT collector under the climatic conditions of Abu Dhabi, United Arab Emirates was experimentally investigated. The electrical performances of the PVT collector was compared to that of a standalone PV panel. Moreover, effect of sand accumulation on performance of PVT collectors was examined. Additionally, effect of mass flow rate on thermal and electrical output of PVT collector was studied. Electrical power output is slightly affected by changes in mass flow rate. However, thermal energy increased by 22% with increasing flow rate. Electrical power output of a PV panel was found to be 38% lower compared to electrical output of PVT collectors. Dust accumulation on PVT surface reduced electrical power output up to 7% compared with a reference PVT collector.

scholarly journals Impact of Soiling Rate on Solar Photovoltaic Panel in Malaysia

2018 ◽  
Vol 225 ◽  
pp. 04008 ◽  
Author(s):  
Shaharin A. Sulaiman ◽  
M. Rosman M. Razif ◽  
Tan Dei Han ◽  
Samson M. Atnaw ◽  
S. Norazilah A. Tamili
Keyword(s):  
Prediction Model ◽  
Electrical Power ◽  
Time Interval ◽  
Solar Pv ◽  
Pv System ◽  
Photovoltaic Panel ◽  
Pv Panel ◽  
Time Period ◽  
Solar Pv System ◽  
Time Basis

There are some weaknesses of using solar PV system especially when there is issue of soiling on the surface of solar PV panel. The consequences for absence of this such study can cause unanticipated cost in the operation of solar PV panel. The objective of this project is to study the trend of soiling rate over different time period and its effect on the performance of solar PV panel in Malaysia and to develop a simple prediction model for cleaning interval of solar PV system in Malaysia. The study was conducted on real-time basis on a building’s roof. Measurements of solar irradiance, voltage, current and the mass of dust collected were performed from both clean and dirty panels. It was discovered that the Monthly Test was significant with 4.53% of performance drop. Further analysis was conducted by running prediction model for cleaning interval. Intersection of graph plotting and fixed cleaning cost gives answer of cleaning interval that can be performed. It can be concluded that for every two and half month is the recommended time interval to perform regular cleaning to maximise electrical power generation by solar PV system in Malaysia.

scholarly journals Photovoltaic Panels Temperature Regulation Using Evaporative Cooling Principle: Detailed Theoretical and Real Operating Conditions Experimental Approaches

Energies ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 145
Author(s):  
Zeyad A. Haidar ◽  
Jamel Orfi ◽  
Zakariya Kaneesamkandi
Keyword(s):  
Electrical Power ◽  
Evaporative Cooling ◽  
Operating Conditions ◽  
Bottom Surface ◽  
Transfer Model ◽  
Solar Pv ◽  
Pv Panel ◽  
Better Regulation ◽  
Steady State Heat ◽  
Electrical Power Output

Solar photovoltaic (PV) applications are gaining a great interest worldwide and dominating the renewable energy sector. However, the solar PV panels’ performance is reduced significantly with the increase in their operating temperature, resulting in a substantial loss of energy production and poor economic scenarios. This research contributes to overcoming the PV performance degradation due to the temperature rise. This work involves experimental and theoretical studies on cooling of PV panels using the evaporative cooling (EC) principle. A new EC design to cool the bottom surface of a PV panel was proposed, fabricated, tested, and modeled. A series of experimentation readings under real conditions showed the effectiveness of the method. A steady state heat and mass transfer model was implemented and compared with the experimental data. Fair agreement between the results of the modelling and experimental work was observed. It was found that the temperature of the PV panel can be decreased by 10 °C and the power improvement achieved was 5%. Moreover, the EC helps to stabilize the panels’ temperature fluctuation, which results in a better regulation of electrical power output and reduces the uncertainty associated with solar PV systems.

scholarly journals Performance effect of applying paraffin wax on solar photovoltaic backplate

2019 ◽  
Vol 14 (1) ◽  
pp. 375
Author(s):  
E. Roslan ◽  
A. Razak
Keyword(s):  
Electrical Power ◽  
High Irradiance ◽  
Paraffin Wax ◽  
Solar Photovoltaic ◽  
Solar Pv ◽  
Performance Effect ◽  
Pv Panel ◽  
Back Plate ◽  
Electrical Power Output ◽  
Change Material

<span>The efficiency of solar photovoltaic (PV) panels is affected by its operating temperature. Having high irradiance produces high electrical output but also heats up the panel and reducing the panels efficiency. This study investigates the effect of cooling solar PV panels using 750g of paraffin wax as phase change material (PCM) applied to the back plate of a solar PV panel. The experiment is done at Kajang, Selangor, Malaysia. The result is reduction of up to 9.5°C, increase of up to 0.947W or 11.82% of electrical power output when compared to the panel without any PCM applied. The panel cooled with PCM also produced 4.69% more energy</span>

Development of Cost Effective Data Acquisition System to Evaluate the Performance of Solar Photovoltaic Thermal Systems

2020 ◽  
Vol 143 (1) ◽  
Author(s):  
J. Charles Franklin ◽  
M. Chandrasekar ◽  
D. Ansalam Mattius
Keyword(s):  
Data Acquisition ◽  
Electrical Power ◽  
Cost Effective ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Electrical Performance ◽  
Solar Photovoltaic ◽  
Pv System ◽  
Pv Panel ◽  
Electrical Power Output

Abstract The thermal and electrical performance of the solar photovoltaic (PV) panel of a solar photovoltaic thermal (PVT) air system is determined experimentally in the present work. For this purpose, a data acquisition system was developed indigenously using ATMEL MEGA 2560 and ATMEL 328 microcontrollers. The parameters measured were PV panel surface temperature, inlet and outlet air temperatures, PV current, and voltage. The parameters were also compared with those of a reference PV system to demonstrate the effect of cooling of PV panel on its electrical power output. The experiments were performed in the locality of Tiruchirappalli, Tamilnadu, India (11 deg N latitude, 79 deg E longitude) and the working of the PV data acquisition was tested for a period of 3 months from February to April 2017. The results indicate acceptable working of the indigenously developed PV/PVT data acquisition system.

Performance Analysis of Near-Field Thermophotovoltaic With a Multilayer Metallodielectric Emitter

2016 ◽  
Author(s):  
Y. Yang ◽  
J. Y. Chang ◽  
L. P. Wang
Keyword(s):  
Heat Flux ◽  
Power Output ◽  
Indium Tin Oxide ◽  
Effective Medium Theory ◽  
Near Field ◽  
Electrical Power ◽  
Electrical Contacts ◽  
Alumina Layer ◽  
Photon Transport ◽  
Electrical Power Output

The photon transport and energy conversion of a near-field thermophotovoltaic (TPV) system with a selective emitter composed of alternate tungsten and alumina layers and a photovoltaic cell sandwiched by electrical contacts are theoretically investigated in this paper. Fluctuational electrodynamics along with the dyadic Green’s function for a multilayered structure is applied to calculate the spectral heat flux, and photocurrent generation and electrical power output are solved from the photon-coupled charge transport equations. The tungsten and alumina layer thicknesses are optimized to match the spectral heat flux with the bandgap of TPV cell. The spectral heat flux is much enhanced when plain tungsten emitter is replaced with the multilayer emitter due to the mechanism of surface plasmon polariton coupling in the tungsten thin film. In addition, the invalidity of effective medium theory to predict photon transport in the near field with multilayer emitters is discussed. Effects of a gold back reflector and indium tin oxide front coating with nanometer thickness, which could practically act as the electrodes to collect the photon-generated charges on the TPV cell, are explored. Conversion efficiency of 23.7% and electrical power output of 0.31 MW/m2 are achieved at 100 nm vacuum gap when the emitter and receiver are respectively at temperatures of 2000 K and 300 K.

scholarly journals Evaluating Energy Generation Capacity of PVDF Sensors: Effects of Sensor Geometry and Loading

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1895
Author(s):  
Mohammad Uddin ◽  
Shane Alford ◽  
Syed Mahfuzul Aziz
Keyword(s):  
Surface Area ◽  
Power Output ◽  
Energy Harvester ◽  
Mechanical Strain ◽  
Electrical Power ◽  
Human Movement ◽  
Loading Frequency ◽  
Dielectric Thickness ◽  
Generating Capacity ◽  
Electrical Power Output

This paper focuses on the energy generating capacity of polyvinylidene difluoride (PVDF) piezoelectric material through a number of prototype sensors with different geometric and loading characteristics. The effect of sensor configuration, surface area, dielectric thickness, aspect ratio, loading frequency and strain on electrical power output was investigated systematically. Results showed that parallel bimorph sensor was found to be the best energy harvester, with measured capacitance being reasonably acceptable. Power output increased with the increase of sensor’s surface area, loading frequency, and mechanical strain, but decreased with the increase of the sensor thickness. For all scenarios, sensors under flicking loading exhibited higher power output than that under bending. A widely used energy harvesting circuit had been utilized successfully to convert the AC signal to DC, but at the sacrifice of some losses in power output. This study provided a useful insight and experimental validation into the optimization process for an energy harvester based on human movement for future development.

scholarly journals Design of a Hybrid Photovoltaic Thermal System in Lebanon

2018 ◽  
Vol 171 ◽  
pp. 02002
Author(s):  
Elie Karam ◽  
Patrick Moukarzel ◽  
Maya Chamoun ◽  
Charbel Habchi ◽  
Charbel Bou-Mosleh
Keyword(s):  
Power Output ◽  
Electrical Power ◽  
Hot Water ◽  
Thermal System ◽  
Conduction Model ◽  
Electrical Efficiency ◽  
Pv Module ◽  
Temperature Loss ◽  
Photovoltaic Thermal System ◽  
Electrical Power Output

Due to global warming and the high toxic gas emissions of traditional power generation methods, renewable energy has become a very active topic in many applications. This study focuses on one versatile type of solar energy: Hybrid Photovoltaic Thermal System (hybrid PV/T). Hybrid PV/T combines both PV and thermal application and by doing this the efficiency of the system will increase by taking advantage of the temperature loss from PV module. The solar radiation and heat will be harnessed to deliver electricity and hot water simultaneously. In the present study a solar system is designed to recycle the heat and improve the temperature loss from PV module in order to supply both electricity and domestic hot water. The project was tested twice in Zouk Mosbeh - Lebanon; on May 18, 2016, and June 7, 2016. The average electrical efficiency was around 11.5% with an average electrical power output of 174.22 W, while with cooling, the average electrical efficiency reaches 11% with a power output of 200 W. The temperature increases by about 7 degrees Celsius from the inlet. The 1D conduction model is also performed in order to design the hybrid PV/T system.

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