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>

scholarly journals Thermal Performance of Phase Change Material Based Heat Sink for Solar Photovoltaic Cooling

2019 ◽  
Vol 8 (9) ◽  
pp. 3320-3323 ◽  
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Thermal Performance ◽  
Heat Sink ◽  
Paraffin Wax ◽  
Transient Temperature ◽  
Solar Photovoltaic ◽  
Solar Pv ◽  
Pv Panel ◽  
Change Material

Solar photovoltaic panels can receive only eighty percent of total incident solar radiation. A small amount of incident energy is transformed into electrical energy based on the efficiency of the photovoltaic (PV) cell. The remaining energy leads to an increase in photovoltaic cell operating temperature which affects its life and power output. Cooling of PV panel is the best way to improve the efficiency either by passive or active cooling methods. PV cooling by Phase change materials (PCM) is the best effective technique. Paraffin wax is a non toxic material having high latent heat of fusion used for many thermal applications. In this study, paraffin wax is taken as phase change material in aluminum heat sink with fins. Using DSC, the melting point of paraffin wax is analysed. The flat plate heater is used instead of solar PV panel. Different wattages are used for the experiments. Different inclinations such as horizontal (00 ), vertical (900 ) and intermediate (450 ) were taken in to consideration. The melting starts at 50oC and complete melting occurs at a temperature around 60oC for the paraffin based heat sink. The heat sink surface temperatures, fin temperatures and PCM temperatures are measured. The transient temperature distribution of heat sink, PCM is analysed at different wattage inputs. The total thermal performance of this paraffin PCM based heat sink was analysed experimentally. This infers that the cooling of high temperature of PV panels can be done by using paraffin based PCM to increase the efficiency and life of the panels.

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 Experimental study of the impact of dust on azimuth tracking solar PV in Sharjah

2021 ◽  
Vol 11 (5) ◽  
pp. 3671
Author(s):  
Mohamed A. M. Abdelsalam ◽  
Fahad Faraz Ahmad ◽  
Abdul-Kadir Hamid ◽  
Chaouki Ghenai ◽  
Oussama Rejeb ◽  
...  
Keyword(s):  
Experimental Study ◽  
Electrical Power ◽  
Winter Season ◽  
Weather Conditions ◽  
Dust Particles ◽  
Solar Photovoltaic ◽  
Cleaning Process ◽  
Solar Pv ◽  
Electrical Power Output ◽  
The Impact

<span>Dust is one of the significant constraints in utilizing solar photovoltaic systems under harsh weather conditions in the desert regions due to creating a shadow that blocks solar irradiance from reaching solar cells and consequently, significantly reducing their efficiency. In this research, experimental study was performed to comprehend the nature of dust particles and their impact on the electrical power output that is generated from azimuth tracking solar PV modules under Sharjah environmental conditions in winter season. According to laboratory experiments, the power losses are linearly related to the dust accumulated density on the surface of the solar panel with a slope of 1.27% per g/m2. The conducted Outdoor studies revealed that the absolute reduction in output power increased by 8.46% after 41 continuous days with one low-intensity rainy day. The linear relationship obtained from indoor experiments was applied later to estimate the dust deposited density on the outdoor setup. The results showed that a regular cleaning process every two weeks is recommended to maintain the performance and to avoid the soiling loss. This work will help engineers in the solar PV plants to forecast the dust impact and figure out the regularity of the cleaning process in case of single axis tracking systems.</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.

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 New Design of Solar Photovoltaic and Thermal Hybrid System for Performance Improvement of Solar Photovoltaic

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Ridwone Hossain ◽  
Al Jumlat Ahmed ◽  
Sheik Md Kazi Nazrul Islam ◽  
Nirupam Saha ◽  
Preetom Debnath ◽  
...  
Keyword(s):  
Hybrid Systems ◽  
Energy Conversion Efficiency ◽  
Open Circuit ◽  
Solar Photovoltaic ◽  
Solar Pv ◽  
Thermal Systems ◽  
Energy Technologies ◽  
Pv Panel ◽  
Average Improvement ◽  
New Type

Solar photovoltaic (PV) and solar thermal systems are most widely used renewable energy technologies. Theoretical study indicates that the energy conversion efficiency of solar photovoltaic gets reduced about 0.3% when its temperature increases by 1°C. In this regard, solar PV and thermal (PVT) hybrid systems could be a solution to draw extra heat from the solar PV panel to improve its performance by reducing its temperature. Here, we have designed a new type of heat exchanger for solar PV and thermal (PVT) hybrid systems and have studied the performance of the system. The PVT system has been investigated in comparison with an identical solar PV panel at outdoor condition at Dhaka, Bangladesh. The experiments show that the average improvement of open circuit voltage (Voc) is 0.97 V and the highest improvement of Voc is 1.3 V. In addition, the overall improvement of output power of solar PV panel is 2.5 W.

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 Grid Load Reduction through Optimized PV Power Utilization in Intermittent Grids Using a Low-Cost Hardware Platform

Energies ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1764 ◽  
Author(s):  
Mashood Nasir ◽  
Hassan Abbas Khan ◽  
Irfan Khan ◽  
Naveed ul Hassan ◽  
Nauman Ahmad Zaffar ◽  
...  
Keyword(s):  
Low Cost ◽  
Electrical Power ◽  
Developed Countries ◽  
Load Shedding ◽  
Solar Photovoltaic ◽  
Solar Pv ◽  
Utility Company ◽  
Optimization Framework ◽  
Grid Environments ◽  
Grid Load

Renewable energy incorporation in many countries takes different forms. In many developed countries, grid-tied solar photovoltaic (PV) installations are widely coupled with lucrative Feed-in-Tariffs (FiT). However, conventional grid-tied solutions are not readily viable in many developing countries mainly due to intermittent grids with load shedding and, in some cases, lack of net-metering or FiT. Load shedding refers to an intentional electrical power shutdown by the utility company where electricity delivery is stopped for non-overlapping periods of time over different parts of the distribution region. This results in a non-continuous availability of the utility grid for many consumers over the course of a day. In this work, the key challenges in the integration of solar energy explicitly in residential power back-up units are reviewed and system hardware level requirements to allow optimized solar PV utilization in such intermittent grid environments are analyzed. Further, based upon the low-cost sensing and real-time monitoring scheme, an online optimization framework enabling efficient solar incorporation in existing systems to achieve minimum grid dependence in intermittent grid environments is also provided. This work is particularly targeted for over 1.5 billion residents of semi-electrified regions in South Asia and Africa with the weak and intermittent grid.

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