scholarly journals Identifikasi Daerah Prospek Panas Bumi dengan Menggunakan Teknik Pengindraan Jauh (Studi Kasus: Kecamatan Cisurupan, Kabupaten Garut)

2019 ◽  
Vol 2018 (1) ◽  
Author(s):  
Hary Nugroho ◽  
Mohamad Farhan Fadhilah
Keyword(s):  
Remote Sensing ◽  
Brightness Temperature ◽  
Geothermal Energy ◽  
Energy Demand ◽  
Alternative Energy ◽  
Geological Structure ◽  
Energy Sources ◽  
Energy Potential ◽  
Alternative Energy Sources ◽  
Sensing Technology

ABSTRAKPertambahan jumlah penduduk mengakibatkan meningkatnya kebutuhan akan energi. Sumber energi dari fosil semakin hari semakin menipis sehingga perlu ada upaya pencarian energi terbarukan. Salah satu potensi energi terbarukan yang banyak tersebar di Indonesia adalah energi panas bumi. Indonesia memiliki 40% potensi energi panas bumi dunia. Umumnya daerah prospek panas bumi berada pada daerah vulkanik yang dikelilingi oleh vegetasi rapat. Salah satu cara untuk mengetahui lokasinya adalah menggunakan metode pengindraan jauh. Teknologi pengindraan jauh ini dapat digunakan pada tahap awal identifikasi yang selanjutnya dapat didalami menggunakan teknik geofisika dan geokimia. Citra pengindraan jauh yang digunakan dilakukan analisis melalui suhu kecerahan atau brightness temperature untuk selanjutnya diintegrasikan dengan data kelurusan, struktur geologi, dan manifestasi panas bumi. Hasil dari penelitian ini menunjukkan bahwa daerah prospek panas bumi terletak di kawasan Gunung Papandayan yang mencakup Desa Sirnajaya, Karamatwangi, Cisurupan, Cisero, Cidatar, Sukatani, Cipaganti, dan Sukawargi. Daerah prospek terletak di dataran tinggi dengan suhu kecerahan yang beragam antara 12,8°C-42,8°C.Kata kunci: panas bumi, pengindraan jauh, suhu kecerahan, manifestasiABSTRACTPopulation growth has resulted in increased energy demand. Energy sources from fossils will soon run out, so we need renewable alternative energy sources. One of the potential renewable energy that is widely spread in Indonesia is geothermal energy. Indonesia has 40% of the world's geothermal energy potential. Generally, geothermal prospect areas are in volcanic areas surrounded by dense vegetation. How to find out the location, one of which is the application of remote sensing methods. This remote sensing technology can be used at the initial stage of identification which can then be explored using geophysical and geochemical techniques. The image was processed and analyzed to obtain brightness temperature. These results were then integrated with geological structure, and geothermal manifestations. The prospect area obtained is located in the area of Mount Papandayan which includes the villages of Sirnajaya, Karamatwangi, Cisurupan, Cisero, Cidatar, Sukatani, Cipaganti, and Sukawargi. This region is located in the highlands with brightness temperature varying between 12.8°C-42.8°C.Keywords: geothermal, remote sensing, brightness temperature, manifestation

scholarly journals The Perspectives And Roles of Renewable Energy Sources in the Economic Development of Peripheral Areas of Hungary

2013 ◽  
Vol 2 (1) ◽  
pp. 43-46
Author(s):  
Adrienn Nagy ◽  
Kitti Kollár ◽  
László Péli
Keyword(s):  
Economic Development ◽  
Renewable Energy ◽  
Energy Demand ◽  
Alternative Energy ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Modern World ◽  
Energy Potential ◽  
Alternative Energy Sources ◽  
Peripheral Areas

Abstract The everyday use of renewable energy sources is necessary and indispensable in today’s modern world, partly because of the difficult handling of environmental problems caused by the increasing use of fossil energy sources, and partly because of the still increasing energy demand. Concerning alternative energy sources, Hungary has great potential in geothermal energy, which can mean a breakout especially for the peripheral, disadvantaged micro-regions while developing their future strategies. This was the motivation of our research. In our study, we intended to highlight the economic development perspectives of the Hungarian micro-regions lagging behind regarding the renewable energy potential.

scholarly journals Energy-saving texnologies and alternative energy sources

2020 ◽  
Vol 8 ◽  
Author(s):  
Abdunabiyeva Noila Yusufjon qizi
Keyword(s):  
Geothermal Energy ◽  
Alternative Energy ◽  
Hot Water ◽  
Energy Sources ◽  
Energy Reserves ◽  
Coal Gas ◽  
Alternative Energy Sources ◽  
Key Issues ◽  
Hot Water Supply ◽  
Electricity Utilities

The energy problem is one of the most pressing issues in the world  is on the agenda of scientists working in the field of energy.  XXI  century with the development of science, rising technology creating the opportunity for a person to live normally, providing him with enough energy, food is one of the key issues.  Everyone knows digging  the energy reserves of its resources are declining.  But the need for it increased, and now the world's population has reached seven billion. There are the following types of energy sources that used by humanity: oil, coal, gas, atom, biomass, water, solar, wind, geothermal energy.  This energy sources can be divided into two types, respectively.  Biomass, water, sun, wind, geothermal energy - renewable;  oil, coal, gas, nuclear energy - non-renewable.  The energy from these resources is electricity, utilities such as energy consumed for services (heating of buildings, hot water supply) occurs in views.

scholarly journals Biomass Production and Ester Synthesis byIn SituTransesterification/Esterification Using the MicroalgaSpirulina platensis

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Tatiana Rodrigues da Silva Baumgartner ◽  
Jorge Augusto Mendes Burak ◽  
Dirceu Baumgartner ◽  
Gisella Maria Zanin ◽  
Pedro Augusto Arroyo
Keyword(s):  
Energy Demand ◽  
Alternative Energy ◽  
Reaction Times ◽  
Biodiesel Production ◽  
Energy Sources ◽  
Alkyl Esters ◽  
Alternative Energy Sources ◽  
Different Temperatures ◽  
Acid Transesterification

The increasing energy demand and reduction in the availability of nonrenewable energy sources, allied with an increase in public environmental awareness, have stimulated a search for alternative energy sources. The present study was aimed at producing biomass from the microalgaSpirulina platensisand at assessingin situsynthesis of alkyl esters via acid transesterification/esterification of biomass to produce biodiesel. Two alcohols (ethanol and methanol) and two cosolvents (hexane and chloroform) were tested, at different temperatures (30, 45, 60, 75, and 90°C) and reaction times (10, 20, 30, 60, and 120 min). The factorial analysis of variance detected an interaction between the factors (): temperature, reaction time, alcohol, and cosolvent. The best yields were obtained with the combination ethanol and chloroform at 60°C, after 30 min of reaction, and with hexane at 45°C, after 10 min of reaction.In situtransesterification/esterification of alga biomass to form esters for biodiesel production adds unconventional dynamics to the use of this feedstock.

scholarly journals Advantages of biomass compared to traditional fuels

2020 ◽  
Vol 11 (2) ◽  
pp. 96-104
Author(s):  
L. Stepasyuk ◽  
◽  
O. Nahorna ◽  
Keyword(s):  
Natural Gas ◽  
Alternative Energy ◽  
Oil And Gas ◽  
Private Enterprise ◽  
Renewable Energy Sources ◽  
Developed Countries ◽  
Energy Sources ◽  
Energy Potential ◽  
Alternative Energy Sources ◽  
The Developed Countries

Given Ukraine's high dependence on imported energy, primarily natural gas, and the availability of great biomass potential, it has been proven that bioenergy is one of the strategic directions of the sector's development in renewable energy sources. It is determined that the pace of bioenergy development in Ukraine still lags significantly behind European ones. It is established, that in the developed countries of the world use of biomass as a source of energy continues to play an important role because of a significant increase in prices for oil and gas, as well as the growing demand for protection of the environment. Therefore, the introduction of modern technologies for continuous energy production from biomass is an important condition for the solution of problems of supply of energy and prevent degradation of the environment. The possibility of using biofuels in the Kyiv region is proved, the investment attractiveness of this region as a source of thermal energy is revealed. The methodical approach to estimating the theoretical potential of waste due to the use of alternative energy sources is substantiated. The theoretical energy potential of the biomass of by-products of agricultural crops of private enterprise "Sosnova" was assessed, which made it possible to determine the prospects of an agricultural enterprise in the energy supply of the Kyiv region at the expense of biofuels. According to the generally accepted method, the theoretical energy potential of straw and vegetable waste of private enterprise "Sosnova" was calculated, which in the market turnover in 2019 amounted to 8392 tons of oil equivalent. It was determined that the predominant type of biomass in the studied enterprise were corn stalks and wheat straw. On the example of the object of the school, which is located near the investigated enterprise, the calculation of savings on heating by replacing the traditional type of fuel (natural gas) with biofuel. The calculations show that due to biofuels the company can provide 28% of the school's need for the heating season. The savings will be - 60.6 thousand UAH and its use allow you to save about 43% of fuel annually.

scholarly journals Regional Disparities and Features of Solar and Wind Energy Potential of Bulgaria

2021 ◽  
Vol 1 (5) ◽  
pp. 7-11
Author(s):  
Georgi Belev
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Alternative Energy ◽  
New Technologies ◽  
Global Climate ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Energy Potential ◽  
Alternative Energy Sources ◽  
Wind Energy Potential

Global climate fluctuations and projections of deteriorating sustainable human development since the beginning of the 21st century have highlighted the need to look for alternative energy sources to carbon fuels. The utilization of solar and wind energy has become a challenge for engineers and technologists to develop new technologies for more efficient development of renewable energy sources. The purpose of this paper is to present the territorial features in the utilization of renewable energy sources – solar radiation and wind in Bulgaria. The study focuses on the regional features of the solar- and wind energy potential. Based on statistical data, the utilization of the RES potential is considered through a review of the installed capacities

scholarly journals The current status, challenges and prospects of using biomass energy in Ethiopia

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Natei Ermias Benti ◽  
Gamachis Sakata Gurmesa ◽  
Tegenu Argaw ◽  
Abreham Berta Aneseyee ◽  
Solomon Gunta ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Alternative Energy ◽  
Negative Impact ◽  
Biomass Energy ◽  
Current Status ◽  
Energy Sources ◽  
Energy Potential ◽  
Alternative Energy Sources ◽  
Socioeconomic System ◽  
Biomass Availability

AbstractDespite enormous challenges in accessing sustainable energy supplies and advanced energy technologies, Ethiopia has one of the world's fastest growing economies. The development of renewable energy technology and the building of a green legacy in the country are being prioritized. The total installed capacity for electricity generation in Ethiopia is 4324.3 MW as on October, 2018. Renewable energy accounts for 96.5% of total generation; however, despite the county's enormous biomass energy potential, only 0.58% of power is generated using biomass. Ethiopia has surplus woody biomass, crop residue and animal dung resources which comprise about 141.8 million metric tons of biomass availability per year. At present the exploited potential is about 71.9 million metric tons per year. This review paper provides an in-depth assessment of Ethiopia's biomass energy availability, potential, challenges, and prospects. The findings show that, despite Ethiopia's vast biomass resource potential, the current use of modern energy from biomass is still limited. As a result, this study supports the use of biomass-based alternative energy sources without having a negative impact on the socioeconomic system or jeopardizing food security or the environment. This finding also shows the challenges, opportunities and possible solutions to tackle the problem to expand alternative energy sources. The most effective techniques for producing and utilizing alternate energy sources were also explored. Moreover, some perspectives are given based on the challenges of using efficient energy production and sustainable uses of biomass energy in Ethiopia as it could be also implemented in other developing countries. We believe that the information in this review will shed light on the current and future prospects of biomass energy deployment in Ethiopia.

scholarly journals Emerging Sources of Renewable Energy: Technological Advancement of Traditional and Natural approaches

2021 ◽  
Vol 17 ◽  
pp. 68-75
Author(s):  
Ketan Doshi
Keyword(s):  
Geothermal Energy ◽  
Alternative Energy ◽  
Energy Sources ◽  
Technological Advancement ◽  
Irreversible Damage ◽  
Modern Times ◽  
Alternative Energy Sources ◽  
Energy Demands ◽  
Natural Energy ◽  
Biogas Energy

माता भूमि पुत्रोहं पृथिव्या (Mata Bhumi PutrohamPrithivyah) - The earth is my mother and I am her son. It is the well-cherished VedicSanskrit verse and is most appropriateguide for the world's struggle for energy demands. Traditionally in Vedic culture and in modern times in many countries cow-based energy sources were used to fulfill the energy demands. Since the past more than 3 centuries, human race has adopted energy sources based on fossil, which are on the edge of extinction, as well as producing consequences like global warming, irreversible damage to natural sources like sea etc. These consequences are challengingexistence of mankind. Biogas energy and biomass are the traditional and natural energy sources. The present article highlights such sustainable emerging sources. Technological advancement in biogas energy, hydrogen from biogas and other sources, geothermal energy, and biomass have made significant technological advancement and emerging as alternative energy sources to which present scientific and governmental bodies are looking into it to curb the energy challenges.

UNBRIDGEABLE GAP BETWEEN TRANSPORT POLICY AND PRACTICE IN HUNGARY / VENGRIJOS TRANSPORTO TOLITIKOS IR PRAKTIKOS TOTRŪKIS

2012 ◽  
Vol 20 (2) ◽  
pp. 104-109 ◽  
Author(s):  
Gabor Szendro ◽  
Maria Csete ◽  
Adam Torok
Keyword(s):  
Renewable Energy ◽  
Energy Demand ◽  
Alternative Energy ◽  
Renewable Energy Sources ◽  
Transport Sector ◽  
Energy Sources ◽  
Policy And Practice ◽  
Additional Tool ◽  
Alternative Energy Sources ◽  
Energy Share

Due to the increasing energy demand and mobility of the human population and in order to pursue sustainable development and decrease fossil fuel dependency there is a major need to use alternative energy sources. Nowadays the 20-20-20 policy is under revision. It has become clear that the transport sector on the EU level will not be able to meet the goal of 20% usage of renewable energy sources by 2020. Our paper investigates the possibilities of Hungary for reaching 10% of renewable energy sources in transport sector. Our research indicates that blending bioethanol and biodiesel with conventional fuels is not sufficient not provide an effective and alternative way to fulfill 10% part of transport-related energy demand. Further efforts are needed that can only be done by deep analysis of the current situation and active participationin policymaking as an additional tool of reaching the target: changing our social behaviour. Furthermore, our investigationshows that this general problem can occur not only in Hungary but in those European countries that targeted the 10% renewable energy share in their transport sector. Santrauka Dėl vis kylančio energijos poreikio ir gyventojų mobilumo bei siekiant įgyvendinti tvariosios plėtros principus, sumažinti priklausomybę nuo iškastinio kuro, didėja būtinumas naudoti alternatyviuosius energijos išteklius. Svarbu konkrečiau apibrėžti projekto „20–20–20“ tikslus. Akivaizdu, Europos Sąjungos lygiu transporto sektoriui nepavyks įgyvendinti, kad iki 2020 m. atsinaujinantys šaltiniai būtų naudojami 20 proc. Nagrinėjamos Vengrijos transporto sektoriaus galimybės alternatyviuosius energijos šaltinius naudoti 10 proc. Atlikus tyrimus nustatyta, kad maišyti bioetanolį ir biodyzeliną su įprastiniu kuru nėra pakankama priemonė, kad taptų efektyvia alternatyva ir transportui būtinos energijos poreikį patenkintų 10 proc. Būtinos tolesnės pastangos, dalyvaujant suinteresuotosioms šalims, išsamiai analizuoti esamą situaciją ir keisti socialinę elgseną, kad tai taptų papildoma priemone siekiant tikslo. Nustatyta, kad ši bendrojo pobūdžio problema gali kilti ne tik Vengrijoje, bet ir tose Europos šalyse, kuriose užsibrėžta atsinaujinančius šaltinius transporto srityje naudoti 10 proc.

Regional Disparities and Features of Solar and Wind Energy Potential of Bulgaria

2021 ◽  
Vol 2 (1) ◽  
pp. 7-11
Author(s):  
Georgi Belev
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Alternative Energy ◽  
New Technologies ◽  
Global Climate ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Energy Potential ◽  
Alternative Energy Sources ◽  
Wind Energy Potential

Global climate fluctuations and projections of deteriorating sustainable human development since the beginning of the 21st century have highlighted the need to look for alternative energy sources to carbon fuels. The utilization of solar and wind energy has become a challenge for engineers and technologists to develop new technologies for more efficient development of renewable energy sources. The purpose of this paper is to present the territorial features in the utilization of renewable energy sources – solar radiation and wind in Bulgaria. The study focuses on the regional features of the solar- and wind energy potential. Based on statistical data, the utilization of the RES potential is considered through a review of the installed capacities.

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