scholarly journals Enhancement the Efficiency of Solar PV by Increasing Rate of Heat Transfer

2019 ◽  
Vol 5 (6) ◽  
pp. 10
Author(s):  
Anil Khatri ◽  
Prof. Nitin Tenguria
Keyword(s):  
Electrical Energy ◽  
Solar Panel ◽  
Heat Sinks ◽  
Back Surface ◽  
Solar Pv ◽  
Solar Panels ◽  
Air Velocity ◽  
Steady State Temperature ◽  
Extended Surfaces ◽  
Cooling Methods

As the future progresses, many companies and industries are striving to achieve a “greener” approach to energy production by using solar energy. Solar panels that use PV cells (semiconductor devices used to convert light into electrical energy) are popular for converting solar power into electricity. One of the problems in using PV cells to extract energy from sunlight is the temperature effect on PV cells. As the solar panel is heated, the conversion efficiency of light to electrical energy is diminished. Because solar panels can be expensive, it is important to be able to extract as much energy as possible. The proposes cooling methods for the panel in order to achieve optimum efficiency. To achieve this, various cooling methods have been proposed. A bare solar panel with no air velocity was used as a base model. This was tested and compared to bare solar panels cooled by heat sinks, in the form of extended surfaces such as plate fins that can be mounted on the back surface of solar panels. Results showed that the heat sinks were only marginally effective; they resulted in a steady-state temperature of only a few degrees less than a solar panel without a heat sink. Due to these results, it is proposed that pump cooling would be far more beneficial. With the correctly sized pump, the temperature can be made to closely match any desired value.

Low prices will expand China's solar panel exports

2018 ◽  
Keyword(s):  
Solar Panel ◽  
Solar Photovoltaic ◽  
Solar Pv ◽  
Solar Panels ◽  
Content Type ◽  
International Prices ◽  
The World ◽  
At Home

Subject The outlook for the solar photovoltaic sector in China. Significance The EU's decision last month to remove tariffs on imported Chinese solar panels follows a US move to increase tariffs. It also comes at a time when international prices for panels are falling in response to a reduction of subsides for the deployment of solar photovoltaic (PV) capacity in China. Impacts Falling prices will stimulate further installation of solar PV capacity across the world, especially in sunny regions. Chinese manufacturers will further expand their capacity both at home and abroad. Non-Chinese PV manufacturers will find their profits squeezed even further unless they are protected by import controls. The rate of deployment of new solar PV capacity within China will decline, but still remain substantial.

scholarly journals Design and Experimental Investigation of Portable Solar Thermoelectric Refrigerator

2017 ◽  
Vol 14 (1) ◽  
Keyword(s):  
Economic Analysis ◽  
Thermoelectric Module ◽  
Electrical Energy ◽  
Heat Sinks ◽  
Maintenance Cost ◽  
Solar Pv ◽  
Cold Surface ◽  
Electric Power Supply ◽  
Heating And Cooling ◽  
Solar Powered

The aim of this project is to design a portable solar thermoelectric refrigerator for people living in remote areas, or outdoor applications where electric power supply is absent. The design of the solar-powered refrigerator based on the principle of the thermoelectric module to create a hot side and cold side. Solar PV module is used to supply electrical energy to the thermoelectric module to generate hot and cold effects for heating and cooling application. A wellinsulated rectangular container made of aluminum is used as a cooling chamber. To enhance the cooling effect, heat sinks and electric fans are added to the hot side to cool down the thermoelectric modules. The system was able to reach 40 C in the cold surface of the TEM and 100 C as the refrigerant temperature and 300 C in hot chamber with 0.66 COP. An economic analysis is carried out to study the viability of this novel technique. Economic analysis reveals that the system has sufficient amount of saving due to renewable source of energy which is free and lower maintenance cost. One more major advantages of the proposed refrigerator is its longer lifetime that might reach up to 40 years

scholarly journals Design of Solar Panel Light Monitoring and Controllers Using a Web-Based Arduino

2018 ◽  
Vol 6 (1) ◽  
pp. 33-38
Author(s):  
Dinari Gustiana
Keyword(s):  
Measurement Data ◽  
Electrical Energy ◽  
Solar Panel ◽  
Solar Panels ◽  
Battery Voltage ◽  
Web Based ◽  
Panel Light ◽  
Energy Needs ◽  
Modern Era ◽  
The Web

In the Modern Era, a source of electrical energy is very necessary, given the large number of electronic equipment that really requires a source of electrical energy. Solarcell is a device or component that can convert light energy into electrical energy. However, the energy used in this solar panel needs to be considered the efficiency of its use. Therefore it is necessary to monitor currents and voltages and loads in real time to determine the energy needs of solar panels for lamps. Monitoring of voltage, load and current on this solar panel is based on a microcontroller. The voltage generated by the solar panel and the battery voltage is measured using a sensor. It takes a Web and a modem device to send solar panel measurement data from a distance, with remote monitoring makes it easier to find out what the voltage and load is without having to be in place of the solar panel. Web as a control for lights, blackouts, dim and bright lights, on the web can monitor voltage and current values. The results of the microcontroller ADC are able to send data to the web. The data stored in the ms.excel file contains the voltage from the solar cell, the current at the load and the time when storing and charging the battery. The lights can only last 5 hours when all loads are active (ON), while charging (charging) for 13 hours when the battery is empty.

scholarly journals Pemanfaatan Pembangkit Listrik Tenaga Surya Pada Gedung Bertingkat

Kilat ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 115-124
Author(s):  
Tri Joko Pramono ◽  
Erlina Erlina ◽  
Zainal Arifin ◽  
Jef Saragih
Keyword(s):  
Solar Radiation ◽  
Power Plants ◽  
Solar Power ◽  
Electrical Energy ◽  
Solar Panel ◽  
Performance Ratio ◽  
Solar Panels ◽  
Aesthetic Value ◽  
High Rise ◽  
Solar Power Plants

Solar Power Plant is one of the New Renewable Energy power plants. Solar panels can produce unlimited amounts of electrical energy directly taken from the sun, with no rotating parts and no fuel. In this study are optimize solar power plants using hybrid systems with electricity companies and the use of semi-transparent solar panels in high rise buildings to meet the burden of the building. The research will discussed about use of solar power plants using semi-transparent solar panels in multi-storey buildings. The solar panel used for the facade is a semi-transparent solar panel makes its function become two, that is to produce electrical energy as well as glass through which sunlight and can see the view outside the building without reducing the building's aesthetic value. In this study is the value of solar radiation taken from west is the lowest value in November 1.4 Kwh can produce energy PLTS 3,855 Kwh and the highest solar radiation in July amounted to 3.75 Kwh can produce energy PLTS 10.331 Kwh. From the utilization of this PLTS system, Performance Ratio of 85% was obtained using study of 36 panels on the 3rd to 5th floors, this system can be said to feasible.  

scholarly journals OPTIMALISASI PENERIMAAN INTENSITAS CAHAYA MATAHARI PADA PERMUKAAN PANEL SURYA (SOLAR CELL) MENGGUNAKAN CERMIN

2020 ◽  
Vol 5 (2) ◽  
pp. 108-117
Author(s):  
Soni A Kaban ◽  
Muhamad Jafri ◽  
Gusnawati Gusnawati
Keyword(s):  
Solar Cell ◽  
Solar Energy ◽  
Experimental Method ◽  
Electrical Energy ◽  
Solar Panel ◽  
Solar Panels ◽  
Research Material ◽  
Voltage Output ◽  
Flat Mirror ◽  
A Current

Abstrak Energi surya merupakan salah satu energi yang bias dikonversi menjadi energi listrik dengan menggunakan panel surya (photovoltaic solar). Pada penelitian ini, dirancang panel surya dengan cermin datar sebagai reflektor scanning dengan empat buah reflektor pada empat sisi panel surya. Tujuan yang ingin dicapai dalam penelitian ini yaitu untuk mendapatkan keluaran panel surya yang optimal menggunakan cemin sebagai media reflektornya dan mendapatkan konfigurasi penempatan cermin untuk meningkatkan keluaran arus dan tegangan panel surya. Metode yang digunakan dalam penelitian ini adalah metode eksperimen dengan melakukan percobaan terhadap objek bahan penelitian dengan kemiringan reflektor cermin 30o, 45o, dan 60o. Dengan penambahan reflector cermin pada panel surya menyebabkan peningkatan keluaran panel surya pada pukul 12.00 Wita. Panel tanpa reflektor mengahasilkan Arus 2,1 Ampere, Tegangan 6,52 Volt. Panel reflektor 30o menghasilkan Arus 1,89 Ampere, Tegangan 6,25 Volt, Panel reflektor 45o, Arus 2,33 Ampere, Tegangan 6,15 Volt dan Panel reflektor Arus 3,02 Ampere, dan Tegangan 6,41 Volt.Kata kunci: Energi; fotovoltaik; panel surya; cermin. Abstract Solar energy is one of the energies that can be converted into electrical energy using solar panels (photovoltaic solar). In this study, a solar panel with a flat mirror as a scanning reflector was designed with four reflectors on the four sides of the solar panel. The objectives to be achieved in this study are to obtain optimal solar panel output using the mirror as a reflector medium and obtain a mirror placement configuration to increase the current and voltage output of the solar panels. The method used in this research is an experimental method by conducting experiments on the object of the research material with a mirror reflector tilt of 30o, 45o, and 60o. With the addition of a mirror reflector on the solar panel, it causes an increase in the output of the solar panel at 12.00 GMT+08. The panel without a reflector produces a current of 2.1 Ampere, a voltage of 6.52 volts. The 30o-reflector panel produces a current of 1.89 Amperes, a Voltage of 6.25 Volts, a 450 Reflector Panel, a Current of 2.33 Amperes, a Voltage of 6.15 Volts and a Current 3.02 Amperes of Reflector Panel, and a Voltage of 6.41 Volts. Keywords: Energy; photovoltaic; solar panel; mirror

Control and Conversion of Solar Power

2013 ◽  
pp. 1-18
Author(s):  
Liping Guo
Keyword(s):  
Solar Power ◽  
Electrical Power ◽  
Weather Condition ◽  
Electrical Energy ◽  
Satellite Communications ◽  
Rechargeable Batteries ◽  
Solar Panel ◽  
Solar Panels ◽  
Electrical Grid ◽  
Solar Electricity

Solar energy conversion is one of the most addressed topics in the field of renewable energy. Solar radiation is usually converted into two forms of energy: thermal and electrical energy. Solar electricity has applications in many systems such as rural electricity, water pumping, and satellite communications. A solar power system consists of solar panels, dc-dc converters, controller, and load. Charging a rechargeable battery requires a regulated dc voltage. However, the voltage supplied by a solar panel can vary significantly depending upon the day, time, weather condition, and irradiation from the sun. Since solar power is unregulated, it cannot be supplied to the load directly. Solar power is harvested and stored by charging rechargeable batteries. A dc-dc converter is connected between the solar panel and the battery to charge the battery with a regulated voltage. Therefore, solar power can be properly converted and controlled to provide required electrical power to the load, and excessive power can be sent back to the electrical grid.

scholarly journals Performance study and evaluation of a solar PV testbed system using LabVIEW

2019 ◽  
Vol 10 (1) ◽  
pp. 113-123
Author(s):  
A. Farooq ◽  
R. Aftab
Keyword(s):  
Natural Resources ◽  
Research Work ◽  
Electrical Energy ◽  
Electricity Production ◽  
Solar Pv ◽  
Solar Panels ◽  
Performance Study ◽  
Labview Software ◽  
The World ◽  
Automation And Control

The world is running out of the oil and natural resources with each passing day. Most of the electricity around the world is generated using natural resources. E-governments are trying to move the electricity production from natural resources to hydro and solar generation. For the places such as in the Middle East and deserted areas in Sindh district of Pakistan, where water resources are low and solar is superlative for generating electrical energy. The objective of this research is to implement, model, design and simulate the Photovoltaic Solar Monitoring (PVSM) systems. The simulation for the system is implemented on LabVIEW software and tests are carried out for certain values of input. All the details, expected outcomes, problems, and results are part of this research. The scope of this research is to obtain the results using real-time simulations performed in LabVIEW. The simulation performed in LabVIEW mimics the implementation of the advanced automation and control system technique Supervisory control and data acquisition (SCADA). The objective of this research work is to perform the essential simulation that is required to investigate current products for PV factors monitoring that influence solar panels efficiency. The goals are: to design and to develop a system for monitoring the PV solar systems using LabVIEW, to simulate the performance of PV solar system using the theoretical methods, to monitor system by means of LabVIEW and to show theoretical effects in the method of the curve of PV performance parameters. Implementing the interfacing technique at home level to monitor the local solar parameters helps in utilizing the solar generated energy in an efficient way. Analysis in LabVIEW helps in studying the parametric condition of the environment where solar is required to be installed.

scholarly journals Comparison of Different Solar Thermal Energy Collectors and Their Integration Possibilities in Architecture

2017 ◽  
Vol 2 (1) ◽  
pp. 36 ◽  
Author(s):  
Humam Kayali ◽  
Asst. Professor Dr. Halil Alibaba
Keyword(s):  
Flat Plate ◽  
Electrical Energy ◽  
Solar Panel ◽  
Solar Thermal ◽  
The Sun ◽  
Solar Panels ◽  
Solar Thermal Energy ◽  
Thermal Systems ◽  
Heating Systems ◽  
Electricity Grids

Solar energy is becoming an alternative for the limited fossil fuel resources. One of the simplest and most direct applications of this energy is the conversion of solar radiation into heat, which can be used in water heating systems. A commonly used solar collector is the flat-plate. A lot of research has been conducted in order to analyze the flat-plate operation and improve its efficiency. The solar panel can be used either as a stand-alone system or as a large solar system that is connected to the electricity grids. The earth receives 84 Terawatts of power and our world consumes about 12 Terawatts of power per day. We are trying to consume more energy from the sun using solar panel. In order to maximize the conversion from solar to electrical energy, the solar panels have to be positioned perpendicular to the sun. Thus the tracking of the sun’s location and positioning of the solar panel are important. The main goal of this article is explaining all the solar thermal systems available and the integration possibilities with comparisons for better usages and integration process into design.

scholarly journals Study of Cellulose Nanocrystals (CNC) & Polyvinyl Alcohol (PVA) Composite Film Modified Using Silica and Polybutylene Terephthalate(PBT) As a Transparent, Hydrophobic, Self-Cleaning Cover

2020 ◽  
Author(s):  
Nishan Khadka ◽  
Sulav Parajuli ◽  
Rabindra Acharya ◽  
Sanjaya Neupane ◽  
Jyoti Giri ◽  
...  
Keyword(s):  
Cellulose Nanocrystals ◽  
Incident Light ◽  
Solar Panel ◽  
Poly Vinyl Alcohol ◽  
Solar Pv ◽  
Solar Panels ◽  
Polybutylene Terephthalate ◽  
Water Contact ◽  
Major Barrier ◽  
Self Cleaning

Solar panel soiling is a major barrier in electricity generation by solar Photo-Voltaic (PV) technology, especially in dust-prone cities like Kathmandu. Currently employed techniques use expensive cleaning bots, short-lived coatings or environmentally non-friendly coatings. This paper encompasses a study of a green alternative to counteract solar panel soiling. Cellulose nanocrystals (CNC) blended with Poly Vinyl Alcohol (PVA) with surface modification by Poly butylene terephthalate (PBT) and powdered silica was used to produce a transparent, hydrophobic film which could act as a self-cleaning cover for soiling prone solar panels. The film exhibited an average transmittance of 92.18% of the incident light in the solar PV working spectra (420nm-700nm). Hydrophobicity was quantified by the water contact angle (WCA) which was an average of 87.25°. The film was durable to photocatalytic and hydrolytic decay but further research is warranted before rendering the film suitable for use as a protective cover for solar panels.

scholarly journals Monitoring and Visualization of Solar PV Thermal Flow via Interpolation Techniques

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Feras A. Hafiz ◽  
Y.I. Go ◽  
Rodney H.G. Tan ◽  
Saqaff A. Alkaff ◽  
T.H. Tan ◽  
...  
Keyword(s):  
Solar Panel ◽  
Temperature Profiles ◽  
Measured Temperature ◽  
Thermal Flow ◽  
Solar Pv ◽  
Solar Panels ◽  
Bilinear Interpolation ◽  
Interpolation Technique ◽  
Interpolation Techniques ◽  
Major Factors

Temperature is one of the major factors that affect the efficient of solar panels and temperature profiles on solar panel are required to optimise the performance of solar PV. A method to construct and visualise the thermal profiles of solar panel with minimum temperature measurement is proposed in this work.  Based on nine measured temperature, three different interpolation techniques are used to predict the temperature at 25 points and 81 points. The predicted temperature is then compared with measured temperature from thermal gun. MATLAB is used to reconstruct the thermal image in two different resolution, 17x17 and 33x33. Bilinear interpolation technique and resolution of 33x33 gives the best results and can be applied in industry to predict temperature profile on solar panel with minimum measurement.

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