scholarly journals An Integrated Survey of the Geochemical Study at the Blawan-Ijen Area, East Java

2021 ◽  
Vol 10 (2) ◽  
pp. 84-93
Author(s):  
Riska Laksmita Sari ◽  
Firman Sabila ◽  
Haeruddin Haeruddin ◽  
Eriska Saputri ◽  
Welayaturromadhona Welayaturromadhona ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Alternative Energy ◽  
Hot Water ◽  
Geothermal System ◽  
Water Type ◽  
Geochemical Analysis ◽  
Near Surface ◽  
Co2 Gas ◽  
Geothermal Fluid ◽  
Sulphate Water

Geothermal energy is a renewable alternative energy source. One of the analyses used to determine the characteristics of a geothermal field is water geochemical analysis. The target of this research is the Blawan-Ijen geothermal prospect area, Bondowoso. The geochemical analysis was carried out using AAS, Spectrophotometer and acid-base titration. This survey shows the characteristics of the geothermal system and geothermal fluid in the Blawan area, Ijen. From the chemical analysis of hot water, we found that the types of geothermal water fluids in the Blawan Ijen area vary. In samples BL1, BL2 and BL5 included in the type of Sulphate Water with the dominant elemental Sulphate (SO4) content is also known as Sulfuric Acid Water (Acid-Sulphate Water). Then for the BL4 sample included in the type of chloride water. This type of water is a type of geothermal fluid found in most areas with high-temperature systems. Areas with large-scale hot springs flowing with high Cl concentrations originate from deep reservoirs and indicate permeable zones in those areas. However, this area may not be located above the main upflow zone. There are several other possibilities, such as topographic influences, which can significantly impact hydrological control. The presence of chlorine gas can also identify high zones' permeable areas (e.g., faults, breccia eruptions or conduit). In contrast, BL3 samples are included in the Bicarbonate Water-type. The element HCO3 (bicarbonate) is the most dominant element (main anion) and contains CO2 gas from the chemical analysis results. HCO3 water is generally formed in marginal and near-surface areas in systems dominated by volcanic rocks, where CO2 gas and condensed water vapour into groundwater. The vapour condensation can either heat the groundwater or be heated by steam (steam heated) to form an HCO3 solution

scholarly journals Identification of Geothermal Potential Based on Fault Fracture Density (FFD), Geological Mapping and Geochemical Analysis, Case Study : Bantarkawung, Brebes, Central Java

KnE Energy ◽  
2015 ◽  
Vol 2 (2) ◽  
pp. 141
Author(s):  
Oktoberiman . ◽  
Dimas Aji Ramadhan P ◽  
Fajar Rizki W ◽  
Rizal Tawakal A
Keyword(s):  
Alternative Energy ◽  
Hot Springs ◽  
Major Ions ◽  
Research Area ◽  
Geological Mapping ◽  
Hot Water ◽  
Geothermal System ◽  
Geochemical Analysis ◽  
Fracture Density ◽  
Geothermal Potential

<p>Insufficient of conventional energy production today in Indonesia, encouraging all elements to discover an alternative energy. Geothermal is one of big potential alternative energy in Indonesia regarding the conditon of geological setting in Indonesia which has 129 active volcanoes. Bantarkawung is located in the western of Mount Slamet where hot spring occured as geothermal manifestation. This indicate geothermal potential in that area. This research is aimed to identify geothermal potential that lies in bantarkawung using Fault Fracture Density (FFD), Geological Mapping and Geochemical analysis. Based on FFD analysis known that anomaly area is located at central and northeast of research area, and based on geological mapping known that area composed by mudstone unit and sandstone unit, water temperature of research area is 43 °C to 62 °C, by using geochemical analysis of major ions HCO3-,Cl-,S042- known that the type of hot water is bicarbonate water which characterized as an outflow zone of geothermal system. </p><p><strong>Keywords</strong>: Bantarkawung; FFD; geochemichal analysis; geothermal; hot springs</p>

scholarly journals Geothermal Systems Characteristics in Pesanggrahan Area, Bawang Distric, Batang Regency, Based on Geology and Geochemistry Analysis

2019 ◽  
Vol 125 ◽  
pp. 14002
Author(s):  
Rakhmadi Sulistyanto ◽  
Udi Harmoko ◽  
Gatot Yuliyanto
Keyword(s):  
Hot Springs ◽  
Hot Spring ◽  
Descriptive Analysis ◽  
Hot Water ◽  
Geothermal System ◽  
Water Type ◽  
Geothermal Systems ◽  
Volcanic System ◽  
Geothermal Fluid ◽  
Chloride Water

Research conducted at Pesanggrahan area, Sangubanyu Village, Bawang District, Batang Regency with geographical coordinates at 7°5'00 "00 S - 7°7'30" 00 S, and 109 ° 56'00 "E-109°58'30"E, with an area of around 25 Km². Research methods used quantitative and qualitative methods with descriptive analysis, geological and geochemical analysis. Geochemical fluid samples were taken in manifestations hot springs Pesanggrahan and hot water samples in Sibanteng and Sileri Crater to determine the relationship with geothermal systems in this area. Geomorphology divided into two geomorphology units, they are steep slope and sloping hill. Stratigraphy can be divided into three lithologies, which are andesite breccia, tuff breccia, and tuff sandstone. Based on fluid geochemical characteristics of manifestations, it can be interpreted that hot spring of Pesanggrahan area is outflow zone with bicarbonate-chloride water type, Sibanteng Crater and Sileri Crater, include upflow zone with water type sulfate for Sibanteng Crater, bicarbonate-sulfide water type for Sileri Crater. Environmental source geothermal fluid Pesanggrahan from the magmatic volcanic process. Sources geothermal fluid in Pesanggrahan, Sibanteng and Sileri Crater from meteoric water. Estimated temperature Pesanggrahan in the interval 50-100°C, Sileri Craters 160-180°C, and Sibanteng Craters 140-150°C. The Conceptual model of Pesanggrahan includes a geothermal system that associated with volcanic system and high relief liquid dominated system.

Laboratory Experiences in Alternative Energy Systems and Their Integration in a Green Curriculum

2010 ◽  
Author(s):  
Said Dini ◽  
Richard B. Mindek ◽  
Daniel Goodwin ◽  
Adam Desmarais
Keyword(s):  
Wind Energy ◽  
Solar Collector ◽  
Alternative Energy ◽  
Mechanical Engineering ◽  
Energy Systems ◽  
Hot Water ◽  
Geothermal System ◽  
Solar Pv ◽  
Laboratory Facility ◽  
Laboratory Experiences

Alternative energy laboratory experiences in solar PV and wind energy have been developed to help support the “green” concentration recently offered for the first time in the mechanical engineering program at Western New England College. These laboratories, which give students hands-on experience and a better understanding of basic concepts in alternative energy systems, are conducted in a newly developed indoor/outdoor alternative energy laboratory facility. The alternative energy indoor/outdoor laboratory facility includes a fully operation geothermal system, which is used to heat and cool the engineering labs. It also includes six 195 Watt photovoltaic panels, a 30,000 Btu/clear day flat-plate solar collector, a Thermomax evacuated tubes solar collector, as well as a full scale 1 kW wind turbine, which allows for useful power and hot water to be provided to the engineering building. This facility is also fully instrumented for the collection of key performance data and allows for large scale demonstration of alternative energy systems to students. This paper describes the development, operation and capability of the indoor/outdoor alternative energy facilities, as well as a detailed description of solar and wind experiments, and how these are used in support of the “green” concentration within the mechanical engineering curriculum to give engineering graduates greater competency in the design, analysis and application of solar and wind energy systems.

scholarly journals Magmatism and Geothermal Potential in Pandan Volcano East Java Indonesia

2019 ◽  
Vol 2 (2) ◽  
pp. 50
Author(s):  
Isao Takashima ◽  
Dwi Fitri Yudiantoro
Keyword(s):  
Igneous Rock ◽  
Hot Springs ◽  
Hot Water ◽  
Geothermal System ◽  
Geothermal Fluid ◽  
Additional Information ◽  
Geothermal Potential ◽  
High K ◽  
Petrographic Method ◽  
Using Data

Pandan volcano is a volcano formed on Tertiary sedimentary rocks from the Kendeng zone deposited in the basin of East Java. In addition to generating petroleum potentials, such as Cepu and Bojonegoro oil fields, this area also generates geothermal potential. As a source of heat from the geothermal system is igneous rock formed from the magmatism process. The type of rock formed by the process of magmatism in the Pandan geothermal system is basaltic-andesitic and hornblende andesite are medium-high K calk alkaline affinity located in the island arc. The interaction of hot rock from post magmatism process with hydrothermal fluid resulted in the manifestation of hot springs and calcite travertine in the study area. Prediction of the subsurface temperature of hot water from geothermometer silica analysis contained in Banyukuning and Jarikasinan show cristobalite Beta equilibrium (70oC) and quartz temperature (120oC). To study about magmatism and geothermal fluid using petrographic method and petrochemical analysis (X-ray fluorescence spectrometry method) to the sample of igneous rock. While to study the fluid type and geothermometer of geothermal fluid using data from previous researchers. This research study is expected to provide additional information on the field of geothermal and magmatism in this area.

scholarly journals Geochemistry Exploration and Geothermometry Application in the North Zone of Seulawah Agam, Aceh Besar District, Indonesia

Energies ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 4442 ◽  
Author(s):  
Rinaldi Idroes ◽  
Muhammad Yusuf ◽  
Saiful Saiful ◽  
Muksin Alatas ◽  
Subhan Subhan ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Water Analysis ◽  
Type A ◽  
Gas Analysis ◽  
Geothermal System ◽  
Water Type ◽  
Reservoir Temperature ◽  
Triangle Diagram ◽  
The North ◽  
Sulphate Water

A geochemistry study has been done in four geothermal manifestations—Ie-Seu’um, Ie-Brôuk, Ie-Jue and the Van-Heutz crater—located in the north zone of Seulawah Agam mountain (Aceh Besar District, Indonesia). The study was performed through water and gas analysis. Water analysis were done for all geothermal manifestations, but gas analysis was only done for the Ie-Jue manifestation that has fumaroles. Cation and anion contents were analyzed by ion chromatography, ICP-OES, alkalimetry titrations, and spectrophotometry, meanwhile isotopes were measured by a Liquid Water Isotope Analyzer. The resulting data were used for fluid and gas geothermometry calculations, and plotted in a FT-CO2 Cross-Plot and a CH4-CO2-H2S triangle diagram to obtain reservoir temperatures. The data were also plotted by a Cl-HCO3-SO4 triangle and Piper diagram to obtain the water type and dominant chemical composition, a Na-K-Mg triangle diagram to obtain fluid equilibria, the isotope ratio in the stable isotope plot to obtain the origin of water, and a N2-He-Ar triangle diagram to establish the origin of fumaroles. The water analysis results showed that (1) Ie-Seu’um has an average reservoir temperature of 241.9 ± 0.3 °C, a chloride water type, a dominant Na-K-Cl chemical composition, a mature water fluid equilibrium, and water of meteoric origin; (2) Ie-Brôuk has an average reservoir temperature of 321.95 ± 13.4 °C, a bicarbonate water type, a dominant Na-Ca-HCO3chemical composition, an immature water fluid equilibrium, and water of meteoric origin; (3) Ie-Jue has an average reservoir temperature of 472.4 ± 91.4 °C, a sulphate water type, a dominant Ca-SO4 chemical composition, an immature water fluid equilibrium and water of meteoric origin; and (4) the Van-Heutz crater has an average reservoir temperature of 439.3 ± 95.3 °C, a sulphate water type, a dominant Ca-SO4 chemical composition, an immature water fluid equilibrium and water of magmatic origin. The results of our gas analysis showed that Ie-Jue has an average reservoir temperature of 258.85 °C, and water of meteoric origin. Based on the reservoir temperatures, the geothermal manifestation of the north zone of Seulawah Agam mountain is considered as a high-temperature geothermal system suitable for power plant development.

A Reconnaissance Study of the Hydrothermal Characteristics of Pilgrim Springs, Alaska

1984 ◽  
Vol 106 (1) ◽  
pp. 96-102 ◽  
Author(s):  
T. E. Osterkamp ◽  
J. P. Gosink
Keyword(s):  
Electrical Conductivity ◽  
Ground Water ◽  
Water Flow ◽  
Saline Water ◽  
Hot Water ◽  
Geothermal System ◽  
Measured Temperature ◽  
Conductivity Measurements ◽  
Ground Water Flow ◽  
Near Surface

A reconnaissance level study of the Pilgrim Springs geothermal system was conducted to determine the near-surface thermal regime and to obtain information on the ground water flow regime within the thawed ground area. Measurements included soil temperatures, apparent electrical conductivity of the soil, electrical conductivity and temperature in the Pilgrim River, saturated hydraulic conductivity of the soil and ground water flow characteristics (direction and velocity). In addition the size, number and characteristics (geometry, direction of flow) of near-surface convective plumes were investigated. Measured temperature profiles were used to estimate ground water flow velocities. There are approximately 2–3 km2 of thawed ground surrounded by permafrost on the order of 100 m in thickness. The highest temperatures were found in the southwest quadrant of the thawed area where a pool of ground water at ≈ 92°C exists at 14–32 m below the ground surface. Temperature measurements suggest that water in the pool is flowing laterally and vertically. Temperature and electrical conductivity measurements suggest that this pool of water underlies most of the thawed ground area although the possibility of several, unconnected sources of hot water and multiple pools has not been ruled out. Conductivity measurements suggest that hot and/or saline water rises in convective plumes from the pool at about 40–60 sites. The Pilgrim River appears to be heated by heat transfer from the geothermal area. Saline ground water enters the Pilgrim River, probably through its bed, increasing the conductivity of the river water.

RENEWABLE ENERGY INTEGRATION FOR HOT WATER SUPPLY AND HEATING OF BUILDINGS

2021 ◽  
pp. 3-12
Author(s):  
Yu. Selikhov ◽  
K. Gorbunov ◽  
V. Stasov
Keyword(s):  
Solar Energy ◽  
Heat Production ◽  
Heat Supply ◽  
Alternative Energy ◽  
Fossil Fuel ◽  
Heat Pumps ◽  
Climatic Conditions ◽  
Economic Feasibility ◽  
Hot Water ◽  
The Cost

Solar energy is widely used in solar systems, where economy and ecology are combined. Namely, this represents an important moment in the era of depletion of energy resources. The use of solar energy is a promising economical item for all countries of the world, meeting their interests also in terms of energy independence, thanks to which it is confidently gaining a stable position in the global energy sector. The cost of heat obtained through the use of solar installations largely depends on the radiation and climatic conditions of the area where the solar installation is used. The climatic conditions of our country, especially the south, make it possible to use the energy of the Sun to cover a significant part of the need for heat. A decrease in the reserves of fossil fuel and its rise in price have led to the development of optimal technical solutions, efficiency and economic feasibility of using solar installations. And today this is no longer an idle curiosity, but a conscious desire of homeowners to save not only their financial budget, but also health, which is possible only with the use of alternative energy sources, such as: double-circuit solar installations, geothermal heat pumps (HP), wind power generators. The problem is especially acute in the heat supply of housing and communal services (HCS), where the cost of fuel for heat production is several times higher than the cost of electricity. The main disadvantages of centralized heat supply sources are low energy, economic and environmental efficiency. And high transport tariffs for the delivery of energy carriers and frequent accidents on heating mains exacerbate the negative factors inherent in traditional district heating. One of the most effective energy-saving methods that make it possible to save fossil fuel, reduce environmental pollution, and meet the needs of consumers in process heat is the use of heat pump technologies for heat production.

Revised hydrogeological model of the hydrothermal system Waiwera (New Zealand)

2021 ◽  
Author(s):  
Andreas Grafe ◽  
Thomas Kempka ◽  
Michael Schneider ◽  
Michael Kühn
Keyword(s):  
Water Management ◽  
New Zealand ◽  
Water Level ◽  
Hot Water ◽  
Hydrogeology Journal ◽  
Natural State ◽  
Geothermal System ◽  
Geological Model ◽  
Species Transport ◽  
Study Region

&lt;p&gt;The geothermal hot water reservoir underlying the coastal township of Waiwera, northern Auckland Region, New Zealand, has been commercially utilized since 1863. The reservoir is complex in nature, as it is controlled by several coupled processes, namely flow, heat transfer and species transport. At the base of the aquifer, geothermal water of around 50&amp;#176;C enters. Meanwhile, freshwater percolates from the west and saltwater penetrates from the sea in the east. Understanding of the system&amp;#8217;s dynamics is vital, as decades of unregulated, excessive abstraction resulted in the loss of previously artesian conditions. To protect the reservoir and secure the livelihoods of businesses, a Water Management Plan by The Auckland Regional Council was declared in the 1980s [1]. In attempts to describe the complex dynamics of the reservoir system with the goal of supplementing sustainable decision-making, studies in the past decades have brought forth several predictive models [2]. These models ranged from being purely data driven statistical [3] to fully coupled process simulations [1].&lt;br&gt;&lt;br&gt;Our objective was to improve upon previous numerical models by introducing an updated geological model, in which the findings of a recently undertaken field campaign were integrated [4]. A static 2D Model was firstly reconstructed and verified to earlier multivariate regression model results. Furthermore, the model was expanded spatially into the third dimension. In difference to previous models, the influence of basic geologic structures and the sea water level onto the geothermal system are accounted for. Notably, the orientation of dipped horizontal layers as well as major regional faults are implemented from updated field data [4]. Additionally, the model now includes the regional topography extracted from a digital elevation model and further combined with the coastal bathymetry. Parameters relating to the hydrogeological properties of the strata along with the thermophysical properties of water with respect to depth were applied. Lastly, the catchment area and water balance of the study region are considered.&lt;br&gt;&lt;br&gt;The simulation results provide new insights on the geothermal reservoir&amp;#8217;s natural state. Numerical simulations considering coupled fluid flow as well as heat and species transport have been carried out using the in-house TRANSport Simulation Environment [5], which has been previously verified against different density-driven flow benchmarks [1]. The revised geological model improves the agreement between observations and simulations in view of the timely and spatial development of water level, temperature and species concentrations, and thus enables more reliable predictions required for water management planning.&lt;br&gt;&lt;br&gt;[1] K&amp;#252;hn M., St&amp;#246;fen H. (2005):&lt;br&gt;&amp;#160; &amp;#160; &amp;#160; Hydrogeology Journal, 13, 606&amp;#8211;626,&lt;br&gt;&amp;#160; &amp;#160; &amp;#160; https://doi.org/10.1007/s10040-004-0377-6&lt;br&gt;&lt;br&gt;[2] K&amp;#252;hn M., Altmannsberger C. (2016):&lt;br&gt;&amp;#160; &amp;#160; &amp;#160; Energy Procedia, 97, 403-410,&lt;br&gt;&amp;#160; &amp;#160; &amp;#160; https://doi.org/10.1016/j.egypro.2016.10.034&lt;br&gt;&lt;br&gt;[3] K&amp;#252;hn M., Sch&amp;#246;ne T. (2017):&lt;br&gt;&amp;#160; &amp;#160; &amp;#160; Energy Procedia, 125, 571-579,&lt;br&gt;&amp;#160; &amp;#160; &amp;#160; https://doi.org/10.1016/j.egypro.2017.08.196&lt;br&gt;&lt;br&gt;[4] Pr&amp;#228;g M., Becker I., Hilgers C., Walter T.R., K&amp;#252;hn M. (2020):&lt;br&gt;&amp;#160; &amp;#160; &amp;#160; Advances in Geosciences, 54, 165-171,&lt;br&gt;&amp;#160; &amp;#160; &amp;#160; https://doi.org/10.5194/adgeo-54-165-2020&lt;br&gt;&lt;br&gt;[5] Kempka T. (2020):&lt;br&gt;&amp;#160; &amp;#160; &amp;#160; Adv. Geosci., 54, 67&amp;#8211;77,&lt;br&gt;&amp;#160; &amp;#160; &amp;#160; https://doi.org/10.5194/adgeo-54-67-2020&lt;/p&gt;

scholarly journals Geothermal System Study Case near Bucharest

2019 ◽  
Vol 111 ◽  
pp. 06058
Author(s):  
Galina Prică ◽  
Lohengrin Onuțu ◽  
Grațiela Țârlea
Keyword(s):  
Thermal Response ◽  
Hot Water ◽  
Geothermal System ◽  
System Study ◽  
Accurate Calculation ◽  
Good Efficiency ◽  
Efficient System ◽  
One Step ◽  
Study Case ◽  
Geological Formations

The article shows a study case of a geothermal system near Bucharest. In the paper it is shown that for a good efficiency of a geothermal system for heating and air conditioning, it is important to follow a few steps. One step is a very accurate calculation of the heat and cold load. In the next step it is important to use a specific equipment to obtain the Thermal Response Test (TRT) of geological formations crossed by the borehole. TRT is helpful in providing information related to the evolution of the soil temperature while introducing a thermal load. All information that can be obtained or calculated from the TRT will provide how the climate system will function in time and its efficiency. Furthermore, the effective thermal conductivity and thermal resistance of the well will be determined, extremely important parameters in designing the correct length of the geoheat exchanger. The article used specific software to simulate the evolution of parameters in time, for soil and heat pump. Earth Energy Design offer information for the number of needed boreholes, the depth and the yearly evolution of the soil’s temperature in time for the system etc. Following all these main steps, finally a very efficient system can be designed, that can ensure the heating and produce hot water for the consumption of a house, office building or of other destination buildings.

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