scholarly journals Potensi Panas Bumi Gedongsongo Lereng Selatan Gunung Ungaran Jawa Tengah Berdasarkan Analisis Geosains

2018 ◽  
Vol 2 (1) ◽  
pp. 34
Author(s):  
Rena Juwita Sari
Keyword(s):  
Electric Power ◽  
Geothermal Energy ◽  
Unit Area ◽  
Magnetic Method ◽  
Southern Slope ◽  
Reservoir Temperature ◽  
Energy Potential ◽  
Geophysical Research ◽  
Central Java ◽  
Method Show

<p>Kajian tentang potensi energi panas bumi dan rekomendasi pemanfaatanya telah dilakukan di Gunung Ungaran Jawa Tengah area lokasi candi Gedongsongo. Penelitian bertujuan untuk memperkirakan potensi energi panas bumi lereng selatan Gunung Ungaran, serta membuat skema pemanfaatan energi listrik panas bumi sebagai rekomendasi untuk digunakan di daerah tersebut. Beberapa hasil penelitian yang telah dilakukan pada bidang geofisika, geologi dan geokimia di Gedongsongo lereng selatan Gunung Ungaran, didapatkan bahwa daerah tersebut merupakan daerah prospek panas bumi. Hasil penelitian geofisika dengan metode magnetik didapatkan pengontrol manifestasi panas bumi berupa sesar pada kedalaman 1050 meter – 1100 meter. Suhu reservoir yang diperoleh sebesar 230 <sup>o</sup>C, dimana masuk dalam kategori syarat potensi energi panas bumi. Hasil konversi energi panas bumi  ke listrik sebesar 15 % dari besarnya daya listrik per satuan luas adalah 2,25 MWe. Perkiraan luas prospek panas bumi Gunung Ungaran adalah 1 km<sup>2 </sup>maka daya listrik yang dapat dimanfaatkan adalah 2,25 MWe. Jika di konversi, jumlah daya listrik sebesar 2,25 MWe dapat menerangi rumah sebanyak 2500 rumah jika setiap rumahnya mempunyai daya 900 Watt.</p><p><em>Studies on the potential of geothermal energy and recommendations for its use have been carried out at Mount Ungaran, Central Java, the location of the Gedongsongo temple. The research aims to estimate the potential for geothermal energy at the southern slope of Mount Ungaran, as well as making a scheme for the utilization of geothermal electricity as a recommendation for use in the area. Some of the results of research conducted in the fields of geophysics, geology and geochemistry at Gedongsongo on the southern slope of Mount Ungaran, found that the area is a geothermal prospect area. The results of geophysical research using the magnetic method show that the controller of geothermal manifestations is faults at depths of 1050 meters - 1100 meters. The reservoir temperature obtained is 230 <sup>o</sup>C, which is included in the category of geothermal energy potential requirements. The result of the conversion of geothermal energy to electricity by 15% of the amount of electricity per unit area is 2.25 MWe. The estimated area of Mount Ungaran's geothermal prospect is 1 km<sup>2</sup>, the electric power that can be utilized is 2.25 MWe. If converted, the amount of electric power of 2.25 MWe can illuminate 2500 homes if each house has 900 Watt power.</em></p>

Increase Power Efficientand Reliability of Electrosupply of Consumers of Low Power

GIS Business ◽  
2019 ◽  
Vol 14 (4) ◽  
pp. 42-52
Author(s):  
Sadullayev Nasillo Nematovich ◽  
Safarov Alisher Bekmurodovich ◽  
Nematov Shuhrat Nasilloyevich ◽  
Mamedov Rasul Akif- Ogli
Keyword(s):  
Wind Speed ◽  
Probability Distribution ◽  
Low Power ◽  
Electric Power ◽  
Energy Sources ◽  
Wind Flow ◽  
Wind Rose ◽  
Energy Potential ◽  
Wind Power Installation ◽  
Wind Energy Potential

This article assesses the wind speed data and wind energy potential in the Bukhara region of Uzbekistan. In article it is stated a principle construction "hybrid" a source of the electric power consisting from wind power installation with mechanical store of energy, the solar panel with аккумулятор in common working with an electric network. The speed and direction of the wind measured at a height of 10 m were analyzed by the Weibull probability distribution functionTo determine the direction of wind flow (wind rose), a graph in Matlab environment was constructed. The method of an estimation energy of efficiency of the objects eating from several energy sources is offered. It is proved efficiency of application of such source of the electric power low power consumers

scholarly journals Sustainable Modularity Approach to Facilities Development Based on Geothermal Energy Potential

2021 ◽  
Vol 11 (6) ◽  
pp. 2691
Author(s):  
Nataša Ćuković Ignjatović ◽  
Ana Vranješ ◽  
Dušan Ignjatović ◽  
Dejan Milenić ◽  
Olivera Krunić
Keyword(s):  
Geothermal Energy ◽  
Architectural Design ◽  
Pannonian Basin ◽  
Thermal Power ◽  
Chemical Compositions ◽  
Energy Potential ◽  
Southeastern Part ◽  
Geothermal Resources ◽  
Heating And Cooling ◽  
Different Temperatures

The study presented in this paper assessed the multidisciplinary approach of geothermal potential in the area of the most southeastern part of the Pannonian basin, focused on resources utilization. This study aims to present a method for the cascade use of geothermal energy as a source of thermal energy for space heating and cooling and as a resource for balneological purposes. Two particular sites were selected—one in a natural environment; the other within a small settlement. Geothermal resources come from different types of reservoirs having different temperatures and chemical compositions. At the first site, a geothermal spring with a temperature of 20.5 °C is considered for heat pump utilization, while at the second site, a geothermal well with a temperature of 54 °C is suitable for direct use. The calculated thermal power, which can be obtained from geothermal energy is in the range of 300 to 950 kW. The development concept was proposed with an architectural design to enable sustainable energy efficient development of wellness and spa/medical facilities that can be supported by local authorities. The resulting energy heating needs for different scenarios were 16–105 kW, which can be met in full by the use of geothermal energy.

scholarly journals Deep Geothermal Heating Potential for the Communities of the Western Canadian Sedimentary Basin

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 706
Author(s):  
Jacek Majorowicz ◽  
Stephen E. Grasby
Keyword(s):  
British Columbia ◽  
Northwest Territories ◽  
Geothermal Energy ◽  
Sedimentary Basin ◽  
Electrical Power ◽  
Foreland Basin ◽  
Geothermal Gradient ◽  
Energy Potential ◽  
Western Canada Sedimentary Basin ◽  
Geothermal Heating

We summarize the feasibility of using geothermal energy from the Western Canada Sedimentary Basin (WCSB) to support communities with populations >3000 people, including those in northeastern British Columbia, southwestern part of Northwest Territories (NWT), southern Saskatchewan, and southeastern Manitoba, along with previously studied communities in Alberta. The geothermal energy potential of the WCSB is largely determined by the basin’s geometry; the sediments start at 0 m thickness adjacent to the Canadian shield in the east and thicken to >6 km to the west, and over 3 km in the Williston sub-basin to the south. Direct heat use is most promising in the western and southern parts of the WCSB where sediment thickness exceeds 2–3 km. Geothermal potential is also dependent on the local geothermal gradient. Aquifers suitable for heating systems occur in western-northwestern Alberta, northeastern British Columbia, and southwestern Saskatchewan. Electrical power production is limited to the deepest parts of the WCSB, where aquifers >120 °C and fluid production rates >80 kg/s occur (southwestern Northwest Territories, northwestern Alberta, northeastern British Columbia, and southeastern Saskatchewan. For the western regions with the thickest sediments, the foreland basin east of the Rocky Mountains, estimates indicate that geothermal power up to 2 MWel. (electrical), and up to 10 times higher for heating in MWth. (thermal), are possible.

scholarly journals Migration and Loss of Phlegmariurus (Lycopodiaceae) at Southern Slope of Mt. Slamet Central Java Indonesia

2020 ◽  
Author(s):  
Pudji Widodo ◽  
Titi Chasanah
Keyword(s):  
Rain Forest ◽  
Significant Loss ◽  
Southern Slope ◽  
The West ◽  
The Past ◽  
Central Java ◽  
The Family ◽  
Plant Sources ◽  
Different Altitudes ◽  
Commercial Hunting

Phlegmariurus is a genus of lycophyte plants in the family Lycopodiaceae which is sensitive to climate change. In the past, there were four species namely 1) Phlegmariurus phlegmaria, 2) P. nummulariifolius, 3) P. carinatus, and 4) P. squarrosus found as epiphytic clubmosses on many trees such as pines and Agathis on the southern slope of Mt. Slamet. During 42 years there has been a significant loss of Phlegmariurus at the slope which covers approximately 15,000 ha rain forest covering the subdistrict of Cilongok in the west, Baturraden in the middle, and Sumbang in the east. Some surveys that had been conducted from 1978 to 2020 showed that the presence frequency of the plant decreased. We correlated the temperature increase data from NOAA and precipitaion data from the local meteorology and geophysics data to the frequency of the plants. Furthermore, we also interviewed ten nurseries which sold the Phlegmariurus of approximately 60 nurseries (Figure 6). The information we gathered showed that the location of the plant sources was above the previous locations. We also observed the cultivated Phlegmariurus at different altitudes namely at 95-97 m, 300-400 m, and 600-800 m a.s.l. The result of this study showed that in the past there were a lot of Phlegmariurus spp. However, in 2020 Phlegmariurus were absent in most areas at the southern slope of Mt. Slamet. We proposed three causes of the migration and loss of Phlegmariurus at the southern part of Mt. Slamet namely: 1) The increase of temperature, the decrease of precipitation, and 3) commercial hunting.

scholarly journals Techno-Economic Simulation of a Geothermal Energy Generation System at the Machin Volcano in Colombia

2020 ◽  
Author(s):  
Hernando Enrique Rodriguez Pantano ◽  
Valentina Betancourt ◽  
Juan S. Solís-Chaves ◽  
C. M. Rocha-Osorio
Keyword(s):  
Geothermal Energy ◽  
Energy Generation ◽  
Generation System ◽  
Energy Potential ◽  
Public And Private ◽  
Mountain Ranges ◽  
Cost Of Energy ◽  
Geothermal Potential ◽  
Economic Simulation ◽  
Private Investors

Colombian geothermal potential for power generation is interesting due to the presence of the three Andean mountain ranges and the existence of active volcanoes in junction with springs and underground reservoirs with the consequent closeness of available hydrothermal water-wells. The Machin volcano is a small mountain placed in the middle of the country, that has a considerable geothermal potential with wells in a temperature range of 160 to 260C. For that reason, a techno-economic simulation for a Geothermal Energy Generation System is proposed in this paper, using for that the System Advisor Model software. The purpose of this research is to present a more encouraging picture for public and private investors interested in exploiting this energy potential in Colombia. Simulation results include technical and economic aspects as annual and monthly energy production, geothermal resource monthly average temperature, and the Time Of Delivery Factors are also considered. Some tables with system configuration, plant and pump costs, Capacity Factor, and real and nominal Levelized Cost of Energy are also shown.

scholarly journals DISCOVERY OF NEW KIMBERLITE FIELDS ON THE SOUTHERN SLOPE OF THE LEONE-LIBERIAN SHIELD (Sierra Leone)

2021 ◽  
pp. 118-126
Author(s):  
Oleksandr BOBROV ◽  
Sergii KLOCHKOV ◽  
Serhiy KAKARANZA ◽  
Oleksandr KAKARANZA ◽  
Yurii FEDORISHIN ◽  
...  
Keyword(s):  
Sierra Leone ◽  
Ultramafic Rocks ◽  
Southern Slope ◽  
Rock Matrix ◽  
Geophysical Research ◽  
Optimal Sequence ◽  
Space Images ◽  
Complex Morphology ◽  
Geomorphological Analysis ◽  
Contact Part

During 2017–2018 not far from Sewafeh town, Kono province (Republic of Sierra Leone), we identified a number of previously unknown manifestations of kimberlite magmatism in the form of a system of individual veins localized at the contact of the migmatite basement and Archean ultrabasic massifs, or in the immediate vicinity of ultramafic massifs, which is part of the rocks of the greenstone belt. The optimal sequence of conducting remote sensing studies, such as interpretation of space images of various resolution, neotectonic and geomorphological analysis, SRTM modeling, and then field geological and geophysical research have facilitated this discovery. According to drilling data, kimberlites in different spots of their occurrence (Punduru 1 area) are represented by subvolcanic phlogopite-olivine (with perovskite), and olivine varieties, as well as veins of numerous intensely metasomatic altered kimberlite breccias (Yomby area). Veins of subvolcanic kimberlites are concentrated in the contact part with ultramafic massifs of magmatic and lava (metakomatiite xenoliths) genesis. Kimberlites are the youngest vein formations in the area, crossing even vein pegmatites, the generation of which was provoked by the intrusion of ultramafic rocks in the basement migmatites (Cederholm effect). Kimberlites are present in the section of wells in the form of separate veins of complex morphology and thickness from a few centimeters to 45 cm. In well P1-2 at a depth of 92 m, these are represented by micro porphyry kimberlites of the basaltoid type with microlithic groundmass, altered by secondary metasomatic processes. Porphyry inclusions are represented by pseudomorphs of carbonate-serpentine composition after olivine and rare phlogopite flakes. Olivine crystals of the second-generation act as micro porphyry inclusions. The rock matrix is carbonate. Carbonate is represented by finely crystalline calcite, or replaced by dolomite. In addition to olivine, the groundmass contains relics or pseudomorphs after phlogopite, as well as magnetite, perovskite (it can be replaced by magnetite), secondary apatite. The kimberlites of the Bambawo area are represented by sub-volcanic porphyry basaltoid kimberlites, autolithic kimberlites and kimberlite xenotuff breccias. 

DIG: A New Project to De-risk Ireland’s Geothermal Energy Potential 

2021 ◽  
Author(s):  
Brian O’Reilly ◽  
Duygu Kiyan ◽  
Javier Fullea ◽  
Sergei Lebedev ◽  
Christopher J. Bean ◽  
...  
Keyword(s):  
Geothermal Energy ◽  
Thermal Structure ◽  
Geochemical Data ◽  
Wide Angle ◽  
Energy Potential ◽  
Geothermal Resources ◽  
Secondary Fracture ◽  
Uncertainty Estimates ◽  
Passive Seismic ◽  
Warm Springs

&lt;p&gt;Potential deep (greater &gt; 400 m) geothermal resources, within low to medium temperature settings remain poorly understood and largely untapped in Europe. DIG (De-risking Ireland&amp;#8217;s Geothermal Potential) is a new academic project started in 2020, which aims to develop a better understanding of Ireland&amp;#8217;s (all-island) low-enthalpy geothermal energy potential through the gathering, modelling and interpretation of geophysical, geological, and geochemical data.&lt;/p&gt;&lt;p&gt;The overarching research objectives, are to (i) determine the regional geothermal gradient with uncertainty estimates across Ireland using new and existing geophysical and geochemical-petrophysical data, (ii) investigate the thermochemical crustal structure and secondary fracture porosity in Devonian/Carboniferous siliciclastic and carbonate lithologies using wide-angle seismic, gravity and available geochemical data, and (iii) identify and assess the available low-enthalpy geothermal resources at reservoir scale within the Upper Devonian Munster Basin, i.e. the Mallow warm springs region, using electromagnetic and passive seismic methods, constrained by structural geological mapping results. A new hydrochemistry programme to characterise deep reservoir water composition will add further constraints.&lt;/p&gt;&lt;p&gt;In the island-scale strand of the project, we are using Rayleigh and Love surface waves in order to determine the seismic-velocity and thermal structure of the lithosphere, with crustal geometry. Together with the legacy surface heat flow, gravity, and newly available long-period MT data, this will place bounds on the shape of regional geotherms. Radiogenic heat production and thermal conductivity measurements for Irish rocks will be incorporated into an integrated geophysical-petrological model, within a scheme able to provide critical temperature uncertainties. Regional-scale research will exploit legacy wide-angle seismic data across the Laurentian and Avalonian geological terranes. Geochemical and petrophysical databases will guide in-house Bayesian inversion tools, to estimate probabilities on model outcomes.&lt;/p&gt;&lt;p&gt;Local-scale research will derive subsurface electrical conductivity and velocity images from electromagnetic and passive seismic surveys from the northern margin of the Munster Basin, where the thermal waters tend to have a distinctive chemical fingerprint and a meteoric origin based on available geochemical and isotopic compositions. This local focus aims to directly image fault conduits and fluid aquifer sources at depth, within a convective/conductive region associated with warm springs. This will determine the scale of the geothermal anomaly and hence will evaluate the potential for local- and industrial-scale space heating in the survey locality.&lt;/p&gt;&lt;p&gt;This presentation will give an overview of this new research project and will deliver preliminary multi-parameter crustal models produced by the thermodynamic inversions that fit the surface-wave and surface elevation data. The project is funded by the Sustainable Energy Authority of Ireland under the SEAI Research, Development &amp; Demonstration Funding Programme 2019 (grant number 19/RDD/522) and by the Geological Survey Ireland.&lt;/p&gt;

Turkey's Geothermal Energy Potential

2002 ◽  
Vol 24 (12) ◽  
pp. 1107-1115 ◽  
Author(s):  
Ayhan Demirbaş
Keyword(s):  
Geothermal Energy ◽  
Energy Potential
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