scholarly journals Geothermal Energy as an Alternative to Reduce Atmospheric Emissions and Provide Green Energy

2019 ◽  
Author(s):  
Zayre I. González-Acevedo ◽  
Marco A. García-Zarate
Keyword(s):  
Geothermal Energy ◽  
Green Energy ◽  
Atmospheric Emissions

Harmonized web-based information systems for shallow geothermal energy use in Austria

2021 ◽  
Author(s):  
Cornelia Steiner ◽  
Gregor Goetzl ◽  
Martin Fuchsluger ◽  
Alexander Rehbogen
Keyword(s):  
Geothermal Energy ◽  
Role Model ◽  
Energy Use ◽  
Green Energy ◽  
Energy Resources ◽  
Infrastructure Development ◽  
Information Platform ◽  
Groundwater Availability ◽  
Shallow Geothermal Energy ◽  
Cover Ratio

<p>Neither regional development, construction projects nor infrastructure development – structural planning does not fully consider energy supply in Austria (yet). The project “Spatial Energy Planning for Heat Transition” is part of the research initiative “Green Energy Lab”, which has a project life-time from June 2018 to May 2021. It aims to provide a sound basis for the integration of heat in private and public planning processes and for the implementation of the energy infrastructure of the future together with energy providers.</p><p>Three Austrian states (Vienna, Styria and Salzburg), their capital cities and pilot-municipalities of all scales work together to provide all information necessary for the implementation of spatial heat-planning – as role model for Austria and other European countries. The GIS-based web-tool “heat-atlas” will provide this harmonized data and serve an information platform for project developers as well as for regional planning, fostering a sustainable use of all available sustainable energy resources and infrastructures to their full extent. The system of the information platform is arbitrarily scalable and is aimed to be expanded to other interested regions of Austria on demand.</p><p>One part of this “heat-atlas” is about shallow geothermal energy and covers vertical closed loop and open loop systems. The Geological Survey of Austria developed new methods to estimate capacity and energy resources as well as to show possible limitations of shallow geothermal energy use on property level. The resource calculations combine location-specific parameters such as thermal conductivity, underground temperature and groundwater availability with system-specific parameters such as mode of operation, operational hours, geometry and threshold values demanded by official regulations.</p><p>The method provides not only information about the maximum amount of energy available on the property, but also about the cover ratio of the demand. So called level-1 maps show the resources for standardized well-doublets and borehole heat exchangers independently of the property. The calculations for level-2 maps consider site-specific properties such as heating and cooling demand, operational hours and size of the property. This enables the estimation of the overall energy resources and the cover ratio of the property.</p><p>The results are shown as maps and as location specific query, which gives a concise summary of all relevant information for one location in form of an automatically generated report. More information about the project is available at http://www.waermeplanung.at/.</p>

Elastoplastic constitutive model for hydraulic aperture analysis of hydro-shearing in geothermal energy development

SIMULATION ◽  
2018 ◽  
Vol 95 (9) ◽  
pp. 861-872
Author(s):  
Yong Xiao ◽  
Jianchun Guo ◽  
Hehua Wang ◽  
Lize Lu ◽  
Mengting Chen
Keyword(s):  
Shear Strength ◽  
Hydraulic Fracturing ◽  
Geothermal Energy ◽  
Energy Development ◽  
Green Energy ◽  
Shear Displacement ◽  
Natural Fracture ◽  
Roughness Coefficient ◽  
Fracture Simulation ◽  
Hydraulic Aperture

Geothermal energy is renewable, clean and green energy generated and stored in the Earth’s crust. The most important consideration for geothermal energy development in non-hydrothermal scenarios is the use of hydraulic fracturing technology to establish an effective network pathway to conduct fluid from injectors to producers. Hydraulic fracturing in geothermal wells is referred to as hydro-shearing and the aim is to improve the conductivity of natural fractures. In this paper, linear elastic constitutive relationships and shear strength of discontinuities in the pre-peak region are initially considered. Based on the dynamic frictional weakening, a proved conductive aperture and the post-peak elastoplastic constitutive models are proposed to analyze the deformation and conductivity of the natural fracture. Simulation research has shown that the joint compressive strength (JCS) mainly affects the shear displacement and hardly affects the dilation. The joint roughness coefficient (JRC) is more important for decreasing the shear strength and improves the dilation aperture. To no one’s surprise, reducing the effective normal stress is the best way for increasing the shear displacement, dilation and conductivity of the natural fracture. Almost 90% of the slip displacement and dilation occurs after fracture shear failure. This displacement not only increases the hydraulic conductivity of the fracture, but also reduces the required surface pumping pressure.

Applications of Nanotechnology in Green Energy Manufacturing

2012 ◽  
Vol 442 ◽  
pp. 35-39
Author(s):  
Jian Rong Chen ◽  
Qi Hong
Keyword(s):  
Solar Energy ◽  
Continuous Improvement ◽  
Geothermal Energy ◽  
Nuclear Energy ◽  
Green Manufacturing ◽  
Green Energy ◽  
Biomass Energy ◽  
Improvement Strategy ◽  
The Future ◽  
Remarkable Progress

Green manufacturing is part of the continuous improvement strategy and green energy is indispensable to carry out green manufacturing because manufacturing is energy intensive. Green energy manufacturing is not easy to carry out with conventional means, but with the introduction of nanotechnology, many technical bottlenecks of green energy manufacturing can be resolved. This paper discussed the applications of nanotechnology in green energy manufacturing, especially in the manufacturing of several typical green energy such as solar energy, nuclear energy, biomass energy and geothermal energy, and then pointed out that nanotechnology was helpful to eliminate the technical bottlenecks of green energy manufacturing. Finally, with looking forward to the future, conclusion was drown that by the use of nanotechnology in green energy manufacturing, the supply of green energy would go up to a great new level and the green energy manufacturing would get remarkable progress.

scholarly journals «GREEN» TECHNOLOGIES AS A FACTOR IN THE SUSTAINABLE DEVELOPMENT OF THE NATIONAL ECONOMY

2021 ◽  
Vol 230 (4) ◽  
pp. 423-430
Author(s):  
E.I. MANTAEVA ◽  
◽  
V.S. GOLDENOVA ◽  
I.V. SLOBODCHIKOVA ◽  
◽  
...  
Keyword(s):  
Economic Growth ◽  
Sustainable Development ◽  
National Economy ◽  
Geothermal Energy ◽  
Developed Countries ◽  
Green Energy ◽  
Green Technologies ◽  
The Sustainable Development ◽  
The Right

Since the late 1980s there has been a global rethinking of the human impact on the environment. This led to the emergence of various theories emphasizing environmental stewardship while maintaining a sustainable rate of economic growth. These theories are called the concept of sustainable development. The ecological component of sustainable development emphasizes a frugal attitude to the ecosystem, «green» technologies as the basis for innovative growth and protection of the right of future generations to the quality of the environment. Most developed countries already emphasize the development of such "green" technologies as hydropower, wind power, solar and bioenergy, and geothermal energy. Due to the growing demand of countries for energy resources, it is the development of "green" energy that can become a key point of economic growth of the national economy without harming the environment.

Estimasi Suhu Reservoar Menggunakan Geotermometer (Studi Kasus Lapangan Panas Bumi Jaboi, Sabang)

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Muhammad Isa ◽  
Khairi Suhud
Keyword(s):  
Geothermal Energy ◽  
Hot Springs ◽  
Hot Spring ◽  
Green Energy ◽  
Observation Data ◽  
Geochemical Study ◽  
Field Observation Data ◽  
Temperature Parameter ◽  
K Concentration ◽  
Geochemical Studies

Gunung api Leumo Matee dan Seumeuregoh, Jaboi Sabang memiliki potensi energi panas bumi sangat besar. Hal ini ditandai dengan adanya manifestasi yang muncul di permukaan seperti uap panas, fumarol dan sumber air panas. Namun demikian, potensi panas bumi ini belum dimanfaatkan secara optimal oleh pihak-pihak terkait. Oleh karena itu, perlu dikaji lebih dalam dan menyeluruh untuk mendapatkan informasi yang detail, terutama parameter suhu dan karakteristik batuan/mineral. Metode untuk penentuan potensi panas bumi secara umum meliputi kajian geologi, geofisika dan geokimia. Pada penelitian ini difokuskan pada kajian geokimia khususnya analisis kimia fluida panas bumi. Pendekatan untuk menentukan karakteristik fluida kimia panas bumi dilakukan dengan metode penentuan geotermometri  untuk air (SiO2) dan gas (Na-K). Berdasarkan data pengamatan lapangan dan uji laboratorium yang terstandarisasi menunjukkan bahwa suhu bawah permukaan untuk fluida cair 222 oC dan 201 oC, sedangkan untuk gas 220 oC dan 204 oC. Hasil pengujian sampel fluida panas bumi menunjukkan bahwa konsentrasi K+ =10,90 mg/L, konsentrasi Mg2+ = 64,50 mg/L, konsentrasi Ca2+ = 279,45 mg/L, konsentrasi Na+ =75,85 mg/L konsentrasi Cl- =7,45 mg/L, konsentrasi SO4- =5477,74 mg/L, dan  konsentrasi HCO3- = 0 mg/L. Berdasarkan interpretasi data-data tersebut terutama yang berkaitan dengan suhu reservoar yang diperoleh dengan dua pendekatan formula menunjukkan bahwa manifestasi panas bumi daerah Jaboi, Sabang sangat prospek untuk dikembangkan sebagai energi terbarukan dan ramah lingkungan.   The Volcano of Leumo Matee-Seumeuregoh in Jaboi, Sabang has a massive potential geothermal energy. This is indicated by the manifestation geothermal to surface such as hot steam, fumaroles and hot springs. Nevertheless, this potential geothermal has not been utilized optimally by stakeholders. Therefore, it is important to be deeply and holistically studied to get of detailed information, especially on the temperature parameter and the mineral characteristic. The method used to determine geothermal potency generally includes geological, geophysical and geochemical studies. However in this research geochemical study is more focused, especially the chemical analysis of geothermal fluid. The approach to determine the characteristic of geothermal chemical fluid is conducted by geothermometry technique for water (SiO2) and gas (Na-K). Based on the field observation data and the standardized laboratory test show that the subsurface temperature of liquid fluid is around 222 and 201 oC and gas is around 220 oC and 204 oC. The analysis of hot spring sample shows potassium (K+) concentration of 10.90 mg/L, magnesium (Mg2+) concentration of 64.50 mg/L, calcium (Ca2+) concentration of 279.45 mg/L, sodium (Na+) concentration of  75.85 mg/L, chloride (Cl-) concentration of 7.45 mg/L, sulfat (SO4=) concentration of  5477.74 mg/L, and bicarbonate (HCO3-) concentration of 0 mg/L. Based on the data, especially temperature that was calculated by using formulas Fournier and Gigenbach show that the geothermal manifestation of Jaboi Sabang region is very potential to be developed as a renewable and go green energy.

Study on the Use of Geothermal Energy in Large Space Stadium

2013 ◽  
Vol 368-370 ◽  
pp. 1415-1420
Author(s):  
Qian Kun Wang ◽  
Zhan Liang Zu ◽  
Si Lun Liu
Keyword(s):  
Energy Consumption ◽  
Geothermal Energy ◽  
Public Awareness ◽  
Economic Effect ◽  
Green Energy ◽  
Public Attention ◽  
Public Buildings ◽  
Large Space ◽  
Pump System ◽  
Geothermal Wells

With the development of economy and the rising of public awareness on environmental issues, building energy consumption, especially the energy consumption of public buildings represented by large space stadiums, has received an increasing public attention. Geothermal energy, as a green energy, is widely used in large public buildings as a replacement of traditional energies. This article compares the respective economic and environmental benefits of ground source heat pump system and traditional air-conditioning system. First of all, the article discusses the feasibility of building geothermal wells and utilizing geothermal energy in large space stadiums. Then, the article illustrates the determination of the parameters of the geothermal wells and geothermal utilization strategy (deep + shallow geothermal) through software stimulation on Dest. Finally, the article evaluates the environmental and economic effect of geothermal energy system applied in large space stadium.

scholarly journals Design of Wind and PV-Solar Hybrid System for Tem Equipment in Geophysical Exploration for Geothermal Energy

2019 ◽  
pp. 57-69
Author(s):  
Ms Musila ◽  
Ms Ngetha ◽  
Ms Mariita
Keyword(s):  
Data Collection ◽  
Solar Energy ◽  
Hybrid System ◽  
Geothermal Energy ◽  
Security Analysis ◽  
Geothermal Field ◽  
Green Energy ◽  
Geothermal Area ◽  
Transient Electromagnetic ◽  
Quantification Analysis

The research was tailored to optimize the design of a hybrid system that is powered by wind and solar energy in sustaining the power requirements of the Transient Electromagnetic Method (TEM) instrumentation. The issue addressed by the research was the unsustainability aspect of the batteries during TEM data collection. Therefore, the research tried to come up with an alternative that involved making power from wind and solar resources to power the TEM equipment. The research design began by doing a quantification analysis of both wind and solar resources in the geothermal area. In addition, a terrain and security analysis was done. Lastly, a hybrid system was designed considering its component specification that was governed by the wind and solar characteristics of the geothermal area under study. The sole aim was to solve issues faced with one form of green energy, geothermal energy, with other forms of green energy, wind and solar energy. The end result was the design of a revised final hybrid system that was able to sustain the power requirements of the TEM equipment during data collection in a geophysical survey with the available natural wind and solar resources in the Olkaria Geothermal field. From the analysis, it was evident that design of the hybrid system will primarily depend on the availability of the wind and solar resources in the area under study and the power requirements of the application being powered by the hybrid system.

scholarly journals A Study of Natural and Functional Conditions of Poland in the view of the Geothermal Resources Applications in Agriculture

2020 ◽  
Author(s):  
Robert Skrzypczak ◽  
Beata Kępińska ◽  
Leszek Pająk ◽  
Wiesław Bujakowski
Keyword(s):  
Sustainable Development ◽  
Natural Environment ◽  
Geothermal Energy ◽  
Green Energy ◽  
Geothermal Resources ◽  
The Sustainable Development ◽  
Energy Parameters ◽  
Energy Applications ◽  
Wide Range ◽  
Points Of View

Abstract The agriculture and related sectors present one of the most prospective areas for geothermal energy applications. In many countries they have already been introduced, and new investments in this sector have been also observed. Also Poland has the appropriate resources’ potential – in a wide range of temperatures, for different crops, as well as in the types of applications related to agriculture. The use of this green energy can contribute to sustainable development of agriculture.To achieve this when planning and designing geothermal installations for agriculture, they should be considered from the energy and agricultural points of view, as well as appropriate locations for them shall be selected so that they would be harmoniously incorporated, among others, into existing systems of valuable natural areas (which already play various important functions in the natural environment) and would not interfere with other underground resources of strategic economic importance.The main aspects of such an approach to the sustainable development of the geothermal energy applications in agriculture and related sectors in Poland, as well as natural circumstances, are presented in this article. Also included are basic energy parameters (based on the results of calculations) and technical and economic parameters for greenhouse facilities in one of the selected prospective locations in the Polish Lowlands, which could be supplied by local geothermal resources, contributing to sustainable development of agriculture.

Towards a geothermal exploration well in the Gassum Formation in Copenhagen

1969 ◽  
pp. 29-32
Author(s):  
Henrik Vosgerau ◽  
Ulrik Gregersen ◽  
Lars Kristensen ◽  
Sofie Lindström ◽  
Anders Mathiesen ◽  
...  
Keyword(s):  
Geothermal Energy ◽  
Energy Supply ◽  
District Heating ◽  
Green Energy ◽  
Central Component ◽  
Deep Subsurface ◽  
Geothermal Resources ◽  
Geothermal Exploration ◽  
Production Processes ◽  
Exploration Well

Geothermal resources in the deep subsurface in many parts of Denmark have the potential to form a central component in the future Danish energy supply for district heating. Geothermal energy is sustainable and environmentally friendly and independent of climatic and seasonal variations, in contrast to solar and wind energy. Furthermore, geothermal plants may be integrated with other green energy supplies. The sandstone reservoirs from which the warm geothermal water is extracted may also act as temporary storage for excess heat e.g. from industrial production processes or from solar-heated water in summer periods when the demand for heating is low.

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