scholarly journals Pengaruh Gas C02 dan Refrigeran Dalam Udara Terhadap Efisiensi PLTS (Pembangkit Listrik Tenaga Surya)

2020 ◽  
Vol 17 (2) ◽  
pp. 214
Author(s):  
Muh. Yusuf Yunus ◽  
Laurasti Aswindah Sari
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Output Power ◽  
Electrical Energy ◽  
Input Power ◽  
Maximum Efficiency ◽  
Solar Power Plant ◽  
Co2 Gas ◽  
Power Increase ◽  
Over Time

Application of sunlight energy every time is increasing along with the knowledge that continues to develop over time. One of the sources of solar energy is the Solar Power Plant (PLTS) which uses solar energy for electrical energy. The purposes of this research are to study the effect of CO2 gas for increasing the energy of PLTS and to find the effect of refrigerant gas on the efficiency of PLTS. Data is collected in an integrated electrical laboratory, the data are the voltage, current and intensity of solar radiation. Then the input power, output power and efficiency are calculated. The results of this study are the effect of CO2 gas on the efficiency of PLTS was not affect the efficiency of PLTS, namely the light intensity of 100 W / m2 to 380 W / m2 with a gas contribution of 5% and 10%, can be seen that if output power increase, the efficiency of PLTS is also increase. When using CO2 gas, the efficiency of PLTS almost the same as normal conditions (without gas).  The effect of the refrigerant gas mixture was not enfluence the efficiency of PLTS. When using refrigerant gas of 5% and 10% both R22 and R134 the efficiency of PLTS was the same with CO2 gas which its efficiency almost the same as normal conditions (without gas). Data with the intensity of solar radiation 100 W/m2 in normal conditions (without gas) the maximum efficiency that can be obtained is 9.085917% with an output power of 1.061917 watts, when R134 and R22 gas were added at PLTS, it was obtained  maximum efficiency at R134 (13,624637% )

scholarly journals Improving the Efficiency of Solar Power Plants

2020 ◽  
Vol 30 (3) ◽  
pp. 480-497
Author(s):  
Dmitriy S. Strebkov ◽  
Yuriy Kh. Shogenov ◽  
Nikolay Yu. Bobovnikov
Keyword(s):  
Power Plant ◽  
Solar Radiation ◽  
Solar Energy ◽  
Power Plants ◽  
Solar Power ◽  
Horizontal Surface ◽  
Solar Power Plant ◽  
Utilization Factor ◽  
Working Surface ◽  
Solar Power Plants

Introduction. An urgent scientific problem is to increase the efficiency of using solar energy in solar power plants (SES). The purpose of the article is to study methods for increasing the efficiency of solar power plants. Materials and Methods. Solar power plants based on modules with a two-sided working surface are considered. Most modern solar power plants use solar modules. The reflection of solar radiation from the earth’s surface provides an increase in the production of electrical energy by 20% compared with modules with a working surface on one side. It is possible to increase the efficiency of using solar energy by increasing the annual production of electric energy through the creation of equal conditions for the use of solar energy by the front and back surfaces of bilateral solar modules. Results. The article presents a solar power plant on a horizontal surface with a vertical arrangement of bilateral solar modules, a solar power station with a deviation of bilateral solar modules from a vertical position, and a solar power plant on the southern slope of the hill with an angle β of the slope to the horizon. The formulas for calculating the sizes of the solar energy reflectors in the meridian direction, the width of the solar energy reflectors, and the angle of inclination of the solar modules to the horizontal surface are given. The results of computer simulation of the parameters of a solar power plant operating in the vicinity of Luxor (Egypt) are presented. Discussion and Conclusion. It is shown that the power generation within the power range of 1 kW takes a peak value for vertically oriented two-sided solar modules with horizontal reflectors of sunlight at the installed capacity utilization factor of 0.45. At the same time, when the solar radiation becomes parallel to the plane of vertical solar modules, there is a decrease in the output of electricity. The proposed design allows equalizing and increasing the output of electricity during the maximum period of solar radiation. Vertically oriented modules are reliable and easy to use while saving space between modules.

Designing Solar Power Plant Due to Consumer Load Schedule, Solar Energy Potential, and Electricity Prime Cost

2019 ◽  
pp. 168-196
Author(s):  
Yuliia Daus ◽  
Valeriy Kharchenko ◽  
Igor Viktorovich Yudaev ◽  
Vera Dyachenko ◽  
Shavkat Klychev
Keyword(s):  
Power Plant ◽  
Solar Energy ◽  
Solar Power ◽  
Electrical Energy ◽  
Solar Power Plant ◽  
Energy Potential ◽  
Load Curve ◽  
Load Schedule ◽  
Production Building ◽  
The Cost

The object of research in the chapter is the solar power plant as the source of additional economically expedient power supply of the electrical energy consumer. The purpose of this research is to analyze the options for the layout of solar power plant, taking into account the solar energy potential of the district, the design features of the proposed location, the load curve of the consumer, and the cost of the generated electrical energy. The chapter presents the results of calculation and selection of the parameters of solar power plant elements on the roof of the consumer's production building. The chapter presents the results of research of the dependence of the cost of the electricity generated by the solar power plant on the number of installed panels, which in order to increase the realized solar energy potential of the district also allows adding photoelectric modules and accumulating devices in the layout of the operating station at tariff growth. The chapter presents the results of researching these areas, that are conducted by the authors and which are completely original.

scholarly journals Testing of Solar Power Plant Components Off-Grid Systems and Engineering Economic Analysis at Cemara Island, Brebes Regency, Indonesia

2019 ◽  
Vol 125 ◽  
pp. 10003 ◽  
Author(s):  
Jaka Windarta ◽  
Ardhito Pratama ◽  
Denis ◽  
Agung Nugroho
Keyword(s):  
Power Plant ◽  
Solar Energy ◽  
Economic Analysis ◽  
Solar Power ◽  
Electrical Energy ◽  
Planning System ◽  
Solar Power Plant ◽  
Radiation Level ◽  
Plant System ◽  
Break Even Point

Indonesia is a country that is geographically located right in the equator and variously advantage and the wide for the use of solar energy. Indonesia has a relatively high radiation level, which is 4.80 kWh / m2 / day. Cemara Island is a tourist place but does not have electricity from PLN because access to its location is still difficult to reach. So from that chosen the planning system for the use of electrical energy using solar energy. However, economic analysis is needed so that the estimated weaknesses of the off-grid solar system can be estimated so as to reduce the risk of losses. The testing of each component in the Solar Power Plant system also needs to be done to determine the condition and quality of the components to be used. The economic analysis of the Cemara Island Solar Power Plant System with an initial investment of Rp 52,553,000, in scenario 1 uses interest at 6%, then in scenario 2 without using interest. Through calculations by looking for the value of COE (Energy Cost), NPC (Net Present Cost) and BEP (Break-Even Point), so that costs can be calculated by the manager with the number of 11 managers per month.

scholarly journals Kinerja Lemari Pendingin Alami yang digunakan Sesuai Kondisi Cuaca di Kota Medan

2018 ◽  
Vol 19 (2) ◽  
Author(s):  
Tulus Buhanuddin Sitorus ◽  
Farida Arianil ◽  
Tekad Sitepu
Keyword(s):  
Solar Radiation ◽  
Cooling System ◽  
Weather Conditions ◽  
Electrical Energy ◽  
Maximum Efficiency ◽  
Temperature Changes ◽  
Direct Evaporative Cooling ◽  
Evaporative Cooling System ◽  
Teak Wood ◽  
Vegetables And Fruits

One application in a direct evaporative cooling system was a natural cooler. The advantages of this system were not using the electrical energy and so far also environmentally. This research aims to obtain a performance analysis of the natural cooler as a store for vegetables and fruits in Medan city. The materials for natural cooler consists of teak wood and gunny. The experiments were conducted during seven days in the open air, which were exposed to the solar radiation. The parameter measurement on the weather was using HOBO devices and to record the temperature changes for vegetables or even fruits is using its acquisition data. The results showed that the maximum efficiency of the natural cooler could be obtained  for 43.79%  in the average air temperature of 30.51oC, the air humidity average is 85.12%  with  average solar radiation of 183.98 W/m2.  Experimental data were showing that the condition of  freshness on vegetables or even on  fruits was heavily influenced by weather conditions

scholarly journals Analisis Perancangan dan Pengujian Alat Cuci Tangan Otomasis Berbasis Energi Surya 100 WP

2021 ◽  
Vol 2 (1) ◽  
pp. 14-21
Author(s):  
Heri Suripto ◽  
Unggul Satria Jati
Keyword(s):  
Solar Energy ◽  
Material Selection ◽  
Electrical Energy ◽  
Input Power ◽  
Solar Panel ◽  
Second Phase ◽  
Power Requirement ◽  
Solar Module ◽  
The People ◽  
Solar Radiation Intensity

The outbreak of the Covid 19 disease has caused disaster to the people. The emergence of this disease’s outbreak encourages the importance clean lifestyle. In order not to easily contracted the Covid 19 disease, it is necessary to make automatic handwashing equipment to prevent people from having direct contact with the equipment. In this research the design and testing of an automatic handwashing equipment based on solar energy were carried out. The purpose of this research was to determine the capacity of the sun's intensity to provide electrical energy through the solar module to the battery which will be used to supply electrical energy of solar energy-based automatic handwashing equipment. The method used in this research was the Palh and Beitz method approach and the experimental method which started with the design, material selection, assembly and testing. The design produced equipment specifications for a solar module framework with a height of 100 cm, a width of 80 cm, a length of 100 cm, while for a sink frame with a height of 90 cm, a width of 45 cm, and a length of 55 cm. The test was carried out in three phases, phase one was testing the module input power. The module input power in the test produced a power of 2461 Watts with a solar radiation intensity of 3237 W / m2. The peak intensity and power of the sun was shown at 13.00 WIB. The second phase of the test was the length of time needed to charge the battery took 2.5 hours. The third phase of the test was the power needed for sensors and pumps of 358 Watts. The power requirement of 358 Watts could be supplied by a 100 Wp solar panel, since the power released from a 100 Wp solar panel is 400 Watts.

The Analysis of Abnormal Phenomena of GEO Satellites Solar Array

2013 ◽  
Vol 823 ◽  
pp. 559-562
Author(s):  
Jiao Yan Zhang ◽  
Jun Yan Wang ◽  
Wei He ◽  
Hong Lan Bu ◽  
Yan Zhang
Keyword(s):  
Solar Energy ◽  
Output Power ◽  
Electrical Energy ◽  
Solar Array ◽  
Real Output ◽  
The Real ◽  
Geo Satellites ◽  
Working Status ◽  
Normal Trend ◽  
Array Output

Satellites solar array provides sustainable and reliable energy for satellite by changing the solar energy into electrical energy in order to ensure the normal working of the satellite. The working status of solar array is directly related to the satellites normal running in orbit. The thesis summarized the normal trend of the GEO satellites solar array output power, through comparing the real output power of a certain satellites solar array with the normal trend, and detected four abnormal phenomena of solar array output power. Then the thesis analyzed the reasons, and made related suggestions.

scholarly journals Design and simulate a doherty power amplifier using GaAs technology for telecommunication applications

2019 ◽  
Vol 15 (2) ◽  
pp. 845
Author(s):  
Ehsan Barmala
Keyword(s):  
Output Power ◽  
Power Amplifier ◽  
Power Amplifiers ◽  
High Efficiency ◽  
Maximum Output Power ◽  
Input Power ◽  
Power Divider ◽  
Maximum Efficiency ◽  
Maximum Output ◽  
Doherty Power Amplifier

<span>In this paper, a Doherty power amplifier was designed and simulated at 2.4 GHz central frequency which has high efficiency. A Doherty power amplifier is a way to increase the efficiency in the power amplifiers. OMMIC ED02AH technology and PHEMT transistors, which is made of gallium arsenide, have been used in this simulation. The Doherty power amplifier unique feature is its simple structure which is consisting of two parallel power amplifiers and transmission lines. In order to integrate the circuit, the Doherty power transmission amplifier lines were implemented using an inductor and capacitive components. Also, the Wilkinson power divider is used on the chip input. To improve the efficiency, the auxiliary amplifier dimensions is selected enlarge and the further input power is allocated it by the power divider. A parallel R-C circuit has been used at the input of transistors to improve their stability. Simulation results show that the Doherty power amplifier has 17.2 dB output power gain, 23 dBm maximum output power, and its output power P<sub>1dB</sub> =22.6dBm at compression point -1 dB, also, its maximum efficiency is 55.5%.</span>

scholarly journals PHOTO-THERMOELECTRIC CONVERSION OF SOLAR ENERGY USING A PHOTOTHERMOGENERATOR

2020 ◽  
Author(s):  
Sanjar Zokirov ◽  
I. Parpiev
Keyword(s):  
Solar Cell ◽  
Solar Radiation ◽  
Solar Energy ◽  
Polycrystalline Silicon ◽  
Electrical Energy ◽  
Factors Affecting ◽  
New Model ◽  
Thermoelectric Conversion ◽  
Number Of Factors

This article analyzes a number of factors affecting the efficiency of converting solar radiation into electrical energy, describes the principle of operation of a new model of a solar installation - a photothermogenerator, presents the results of experiments performed by concentrating selective radiation before sending it to a solar cell made of polycrystalline silicon.

scholarly journals Energy interpretation of solar radiation affects for Artemisa province

2018 ◽  
Vol 2 (2) ◽  
pp. 39-49
Author(s):  
Alixandra Perez Noa ◽  
Antonio Vazquez Perez ◽  
Javier Moreno Hechavarria ◽  
Raynel Diaz Santos
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Theoretical Analysis ◽  
Thermal Energy ◽  
Electrical Energy ◽  
Viable Alternative ◽  
Climatic Variables ◽  
Photovoltaic Systems ◽  
Electricity Grid ◽  
Energy Impact

Solar energy is one of the renewable sources with the best prospects for the future, which can have used directly in two fundamental ways: thermal energy and photovoltaic solar energy. Photovoltaic systems are a viable alternative to diversify the energy base worldwide, being able to inject electrical energy into the grid. The work shows the study of the energy interpretation of solar radiation that affects the province of Artemisa, for its possible use in the generation of electricity, based on the introduction of photovoltaic systems connected to the electricity grid. A theoretical analysis is made about the solar potential and the influence of the climatic variables in the use of it, the territory of the Artemisa province is characterized, where the solar radiation for the generation of electricity is valued, the energy impact is evaluated. Derives from the use of solar radiation that affects the territory to generate electrical energy.

scholarly journals Characteristics Surface Temperature of Solar Cell Polycrystalline Type to Output Power

2018 ◽  
Vol 73 ◽  
pp. 01008
Author(s):  
Isworo Pujotomo ◽  
Retno Aita Diantari
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Solar Energy ◽  
Surface Temperature ◽  
Output Power ◽  
Alternative Energy ◽  
Solar Power ◽  
Electrical Energy ◽  
Solar Panels ◽  
Solar Module

To meet the needs of electrical energy, there are alternative energy sources such as solar power in a form of solar power plant. An important equipment aim to handle the of converting of solar energy into electrical energy are solar cells. The development of devices used to modify solar energy into electrical energy has been done since the mid-first half of the last century. Gradually the device is named by scientists with a photovoltaic device, or so-called solar cells (solar cell. This research tested polycrystalline solar module in sunny weather, bright cloudy and overcast. The test results show the effect of solar cell surface temperature to the value of its output power [1]. The condition of the polycrystalline solar panels will work optimally at the measured 32° C - 50° C temperature range on the surface of the solar cell.

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