International journal of physical sciences and engineering
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Temporal analysis on spectral reflectance of clove vegetation based on landsat 8 imagery
Get PDFThis study aims to analyze temporally the spectral reflectance of clove vegetation using Landsat 8 multitemporal imagery data in Buleleng district, Bali. The analysis method uses the conversion of raw data from Landsat 8 images to the spectral reflectance value at the Top of Atmosphere (TOA). This conversion scales back the pixel values ??of the Landsat 8 image in the visible spectrum, namely bands 2, 3, 4 and infrared bands 5, 6, and 7 into percentage units. The temporal analysis technique is carried out by grouping the time series of Landsat 8 image data for 1 period, in 2015, into 4 quarterly groups based on the acquisition time, namely Quarter I (January, February, March), Quarter II (April, May, June), Quarter III (July, August, September) and Quarter IV (October, November, December). The results showed that the graph pattern of the average percentage of spectral reflectance in each quarter was the same and in the infrared spectrum was greater than the visible spectrum. The average value of the largest spectral reflectance was found in the second Quarter which was acquired by band 5 of 28.143%, while the smallest in the first Quarter which was acquired by band 2 was 2.503%
Photovoltaic system to improve energy efficiency
Get PDFRenewable energy sources are generation alternatives that can be used for different applications; Systems that take advantage of photovoltaic solar energy can be used to reduce energy demand during daytime hours, electrification of isolated homes, among other applications. In Ecuador there is a high potential for solar radiation, which can also be applied to project systems connected to the electricity grid or in the form of distributed generation, the objective of the research is to demonstrate the potential for solar radiation that affects the province of Manabí, specifically in the site "El Aromo" in the rural area of the city of Manta there is a land that provides the necessary conditions for the installation of a photovoltaic plant, for the development of the work the bibliographic review method was applied, the inductive deductive and synthesis analysis, the results that can be used were obtained from the installation that exists as a base of the 140 houses that consist in the field that belonged to the old project of Refinery del Pacífico
Evolution of the concept of sustainable development and its applicability in Ecuador
Get PDFSustainable development has become one of the most important issues related to the quality of life and the future of humanity and, although it is a term associated with the environmental area, it is closely linked to the growth of humanity evolving into more conscious beings. The main objective of this article is to review how this concept has evolved and how it is linked to the processes and uses of clean energy in favor of making use of it as a life model. The results indicate that there has been progressing in terms of government efforts, although there is still a long way to go. It is concluded the most appropriate sustainability model to follow is the one that links the social, economic, and cultural dimensions, without neglecting the participation of the actors and taking the environment as an actor that exercises and has established its rights established in the Constitution of Ecuador
Design and construction of a thermoelectric system for high performance computers
Get PDFThe objective of the project is to develop a cooling system as a new alternative to improve the efficiency of desktop-type computer equipment, allowing to extend the useful life of the computer processors more and to obtain a better performance. In manufacturing the system, the thermoelectric cooling technique was used, using components such as Peltier cells, heat sinks, axial fans, and thermal paste in the mechanical section, and temperature sensors were applied to control them. In this sense, it was possible to reduce hot temperatures from 33°C to 20°C on average while maintaining adequate temperatures for the processor, among its characteristics is the energy consumption of 0.18 kWh, the temperature of the hot unit 38.67 ° C, heat to dissipate 132.27 W, cold unit temperature 2 ° C and airflow temperature at the outlet of the system of 19.6 ° C, results obtained in real-time during the practical experimentation phase in various system testing tests Cooling. In conclusion, it is this system that allows reducing temperatures through the delivery of air at a temperature lower than the ambient temperature, unlike active cooling systems that deliver airflow at an ambient temperature of 30 ° C
Design of a photovoltaic installation for a maintenance workshop, in Chone canton, Ecuador
Get PDFWith the passing of the years and until today we are and continue to Dependent on fossil fuels, since electrical energy is the most used resource in the world, it becomes the main reason and the alternative to not depend on fossil resources. The importance of electricity could be considered of vital use, with it comes the development of society, the services that are provided lighting, food refrigeration and the use of some equipment that facilitate daily living are essential. For the development of the research, the desktop research method was applied where different types of bibliography and databases are consulted, in addition to the PvSyst 7.1 software, for the calculation and design of a photovoltaic solar installation for 5 kW, obtaining as results the design of a photovoltaic system to reduce demand during daytime hours
Work accident risk analysis with FMEA (failure mode and effect analysis) method on steel frame bridge project
Get PDFRisk is the possibility of the occurrence of an event outside of which every activity that is likely to be detrimental is carried out by humans. In the Nangarasong Steel Frame construction project in Flores district, there is uncertainty which will create a risk that can encourage the project and can affect the potential for work accidents. Uncertainty factors can cause risk in an activity that has an impact on decreasing labor productivity, risk of cost, time, and damage to design or technology. To reduce these adverse impacts, a risk management system is needed, which includes analysis, analysis, and monitoring of risks that may occur. Risk management makes an integrated effort to manage the risk of work accidents by using the FMEA (Failure Mode And Effect Analysis) method. All construction projects that may experience accident risks are identified and analyzed for the severity with FMEA, from the results of which the causes and impacts of the work accident risks will be sought. After knowing and the impact of the risk of work accidents, the next action on the risk of work accidents that result
Design and manufacture of air quality measurements based on arduino ATmega 2560 using dust ZH03A laser sensor
Get PDFThis study aims at designing an air quality measuring instrument that is more efficient, relatively cheaper, and can be carried because. It has a smaller shape and size compared to the existing tools in the meteorology, climatology, and geophysics agency (BMKG). The main processor uses the Arduino ATmega 2560 microcontroller. This microcontroller functions as the processor for PM2.5 and PM10 concentrations which are the output of the ZH03A sensor. The design results are calibrated with a standard tool, namely BAM1020 which is owned by the BMKG air quality sector to measure air quality. The calibration results obtained that the average value issued by the reference tool which was used as a standard compared to the ZH03A sensor in the design results for PM 2.5 was 6.5 µm/m3, and for the average value of PM1.0 was 2.8 µm/m3 the calculated air pollution standard index (ISPU) value is 126 µm/m3 including the medium category according to the air pollution standard index
Analysis of gravity anomaly and seismicity in Bali region
Get PDFThis study aims to buy soma online usa determine the value of the gravity anomaly in the Bali region, identify the fault structure in the Bali region using gravity interpretation and analyze the relationship between gravity anomaly and seismicity in the Bali region. The data used is secondary data, namely satellite gravity anomaly data obtained from the topex website and earthquake data obtained from the Indonesian Agency for Meteorological, Climatological, and Geophysics (BMKG) catalog. Data processing in this study was done using gravity and Second Vertical Derivative (SVD) methods. We used Surfer15 software, Oasis Montaj, and the Generic Mapping Tool (GMT). The results of the complete Bouguer anomaly map show the anomalous value of the study area between 10-220 mGal, regional anomaly 40-190 mGal, and buy soma online the residual anomaly between (-120)-60 mGal. Judging from the SVD contour map that has included earthquake data in the Bali region for the 2008-2020 period, the type of fault in the Seririt Fault, Tejakula Fault, and Fault around Mount Agung is a thrust fault. Judging from the value of the coefficient of determination, it shows that 99% of the seismicity value is influenced by gravity anomaly. The higher the value of the gravity anomaly, the higher the seismicity value
Energy planning with renewable energy sources
Get PDFThe urban energy model is based on imports from external sources. The continuous increase in energy demand due to population growth and development implies increasing resource requirements. The alternative is to use renewable energies that take advantage of urban resources. The diversity of typologies of cities in terms of resources, demands, architectural conditions, infrastructure, or density, makes a specific analysis necessary. This work identifies fourteen factors concerning the planning process that would allow choosing the most appropriate technology for a given city. Through consultation of experts, the existence of the resource is defined as the most prevalent factor, followed by economic conditions; On the other hand, it is detected that environmental aspects such as global warming, eutrophication, or acidification, are the least incidents when selecting technologies
Computer application for studies of potentials of renewable energy sources
Get PDFComputer science's technologies have come to revolutionize the current era, the distributed generation and the introduction of new alternatives in the conception of the energy production, it is a factor that seen from the energy planning it allows to introduce the renewable energy sources as an element in the development of energetically sustainable territories. The space distribution of the natural resources that they generate, it has made necessary to develop advanced systems for the studies at the space level. For the necessities of printing an analysis space and territorial of the renewable energy sources studies, a geographical information system of renewable energy sources was designed using free software that offers information of the renewable potentials in the territory. This system is a tool that allows an appropriate way to offers information of the place (longitude and latitude) and the potentials (solar, hydric, wind, and biomass) that are generated in them