6,401 research outputs found
Analysis of Solar Radiation Against Solar Panel 50 WP
No full textSolar cell technology is a technology that converts solar energy into electrical energy. This study discusses the radiation of polycrystalline solar cells with a maximum output power of 50 WP. The aim of this study was to determine the effect of light intensity on the yield of electrical energy. The research method is measuring the intensity of the sun using a lux meter and electric current generated from solar panels. From the results of measuring the intensity of the sun for 4 weeks using a 50 Wp cell at 08.00 WIB the average weather is sunny. At 08.00 WIB, the intensity of the sun is 398.05 Wp/m, the voltage is 16.45 volts and the current is 0.73 amperes. The brighter the sun and as long as it is not covered by clouds, the increase in the intensity of the sun at its peak at 14.00 WIB has an intensity of 540.18 W/m, the voltage value is 18.425 Volts and the current value is 0.81 Ampere. The change in value is getting smaller at 17.00 WIB the intensity is 384.75 W/m and for the voltage is 15.7 V and the current is 0.59 A. This is because at that time the average weather was very sunny, and the sun was not covered by clouds
The Analisis Perbandingan Performa Modul Surya Polycrystalline dan Monocrystalline Berkapasitas 320 Wp Menggunakan Perangkat Uji Sun Simulator PASAN: Experimental Performance Evaluation Using the PASAN Sun Simulator
No full textElectric current, measured in amperes (A), and potential difference, measured in volts (V), are the two main forms of electrical energy needed to run electrical devices. The energy required to start, run, or maintain mechanical and electronic devices, such as motors and lighting fixtures, is represented by the electrical power consumption, which is measured in watts (W). The Sun Simulator Pasan test system is used in this study to evaluate the performance of monocrystalline and polycrystalline solar modules. A flash from a light box is focused onto the solar modules during the testing process under controlled circumstances, such as an air mass spectrum of AM1.5, an ambient temperature of 25°C, and an irradiation intensity of 1000 W/m². The Photovoltaic Module Quality Testing Laboratory (LPKMF), BRIN-PUSPIPTEK, examined both monocrystalline and polycrystalline modules with a 320 Wp rating in accordance with laboratory standards. Comparing the efficiency and performance variations of the two varieties of solar modules with comparable rated capacities is the aim of the test conducted under Standard Test Conditions (STC). According to the findings, the Polycrystalline module achieved an efficiency of 17.79% with a peak power output of 315.722 Wp, which deviates 9.278 Wp, or around 2.03%, from its rated value. In the meantime, the monocrystalline module attained an efficiency of 18.82% and produced a peak output of 323.838 Wp, which was 1.602 Wp or 2.79% higher than the rated 325.44 Wp. These findings demonstrate that Monocrystalline modules exhibit slightly higher performance and efficiency under identical testing conditions
In the Region, Performance Follows Goals: Maryland Exceeds Virginia in Contracts for Minority Firms
No full textAdding to his other aticle on AA in today's WP, author notes that the success of AA programs has been seeting goals
KOMPARASI METODE SISTEM PENDUKUNG KEPUTUSAN BERDASARKAN METODE WP, AHP-WP, ENTROPY-TOPSIS DALAM PENENTUAN JURUSAN
No full textThe majors at SMK AR Rahma are still manual and Excel is only used to find the average score. While the number of students is around 140 students, so it takes a long time to determine the student's major. If the number of students in the SMK increases, the student's majoring will take longer which can cause inaccuracies.
Based on this background, in this research the author tries to analyze the accuracy of the WP, AHP-WP, ENTROPY-TOPSIS methods in the majors of vocational students. So that it will be known which method is more accurate in producing student majors. In the process of managing students, data is needed in the form of report cards, academic test scores, majors test scores and health scores. The accuracy of the majors produced by the three methods is measured by comparing it to the majors produced manually by the school.
The result of this research is that the alignment produced by the AHP-WP method is more accurate than the alignment produced by the other two methods. The accuracy results are 70.71% for the AHP-WP method, 64.29% for the WP method, and 51,43% for the ENTROPY-TOPSIS method. So that the AHP-WP method is the best method that can be recommended to schools in the case of majoring students at SMK AR Rahma Mandiri and then a majoring system can be made using the AHP-WP method
Wp-1 reference cases of laminar and turbulent interactions
No full textIn order to be able to judge the effectiveness of transition induction in WP-2, reference flow cases were planned in WP-1. There are two obvious reference cases—a fully laminar interaction and a fully turbulent interaction. Here it should be explained that the terms “laminar” and “turbulent” interaction refer to the boundary layer state at the beginning of interaction only. There are two basic configurations of shock wave boundary layer interaction and these are a part of the TFAST project. One is the normal shock wave, which typically appears at the transonic wing and on the turbine cascade. The characteristic incipient separation Mach number range is about M = 1.2 in the case of a laminar boundary layer and about M = 1.32 in the case of turbulent boundary layer. The second typical flow case is the oblique shock wave reflection. The most characteristic case in European research is connected to the 6th FP IP HISAC project concerning a supersonic business jet. The design speed of this airplane is M = 1.6. Therefore the TFAST consortium decided to use this Mach number as the basic case. Pressure disturbance at this Mach number is not very high and can be compared to the disturbance of the normal shock at the incipient separation Mach number mentioned earlier. As mentioned earlier, shock reflection at M = 1.6 may be related to incipient separation. Therefore two additional test cases were planned with different Mach numbers. ITAM conducted an M = 1.5 test case, and TUD an M = 1.7 test case. These partners have also previously made very specialized and successful contributions to the UFAST project.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Aerodynamic
Comparing Energy Harvesting Efficiency between Solar Panels: Tracking the Sun vs Ground-Mounted 40 WP Panels
No full textThis experiment aimed to evaluate the energy efficiency of a solar tracking panel compared to a ground-fixed solar panel. A 40 WP solar panel with a time-tracking mechanism was used to monitor the sun's movement from morning to evening, while a static 40 WP ground-fixed solar panel was also studied for comparison.The study also included the energy consumption of a 12 V DC motor responsible for orienting the tracking panel to face the sun. Throughout the day, the tracking panel's position was continuously adjusted to align with the sun's position, facilitated by a microcontroller and a gyroscope. The energy consumed by the motor during the tracking process was accounted for. The net energy output of the tracking panel was computed by subtracting the energy expended in tracking from the total energy collected. Following the experimentation, the collected data was analyzed to determine the energy efficiency of the tracking panel in contrast to the ground-fixed panel. The findings revealed that the tracking panel exhibited a 15 percent increase in energy efficiency compared to the ground-fixed panel. These results emphasize the potential benefits of solar tracking technology in optimizing energy capture from solar panels. The implications of these findings are valuable for advancing the design and implementation of solar energy systems, offering increased efficiency and sustainability
Comparing Energy Harvesting Efficiency between Solar Panels: Tracking the Sun vs Ground-Mounted 40 WP Panels
No full textThis experiment aimed to evaluate the energi efficiency of a solar tracking panel compared to a ground-fixed solar panel. A 40 WP solar panel equipped with a time-tracking mechanism was used to monitor the sun's movement from morning to evening, while a static 40 WP ground-fixed solar panel was also studied for comparison. The study additionally included the energy consumption of a 12v DC motor responsible for orienting the tracking panel to face the sun. Throughout the day, the tracking panel's position was continuously adjusted to align with the sun's position, facilitated by a microcontroller and a gyroscope. The energy consumed by the motor during the tracking process was accounted for. The net energiy output of the tracking panel was computed by subtracting the energy expended in tracking from the total energy collected. Following the experimentation, the collected data was analyzed to determine the energy efficiency of the tracking panel in contrast to the ground-fixed panel. The findings revealed that the tracking panel exhibited a 15 percent increase in energy efficiency when compared to the ground-fixed panel. These results emphasize the potential benefits of solar tracking technology in optimizing energi capture from solar panels. The implications of these findings are valuable for advancing the design and implementation of solar energi systems, offering increased efficiency and sustainability.71 PagesSkripsi Sarjan
On the set function
No full textsummary:Inspired by the work that Professor Janusz R. Prajs did on homogeneous metric continua in his paper (2010) and the version of his work for Hausdorff continua with the uniform property of Effros done by this author, we introduce a new set function, , and present properties of it
Amplitude-modulated, Cosine PE and WP Pulses: Theory and Applicability
No full textThe amplitude-modulated, cosine powerexponential (PE) and windowed-power (WP) pulses are discussed, by insisting on their time-domain normalization. Illustrative examples of signatures and their correspondent frequency-domain behavior are given. These examples compellingly demonstrate the possibility to replace non-causal pulses of prevalent use by causal, or even time-windowed, pulses with closely resembling signatures.</p
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