scholarly journals The Impact of Soil Hydrothermal Properties on Geothermal Power Generation (GPG): Modeling and Analysis

Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 448
Author(s):  
Zhengguang Liu ◽  
Gaoyang Hou ◽  
Ying Song ◽  
Hessam Taherian ◽  
Shuaiwei Qi
Keyword(s):  
Heat Transfer ◽  
Power Generation ◽  
Porous Media ◽  
Power Plant ◽  
Geothermal Energy ◽  
Collection Efficiency ◽  
Porous Media Flow ◽  
Geothermal Power Plant ◽  
Geothermal Power ◽  
The Impact

Geothermal power plants have become the main application that utilizes geothermal energy. The utilization of deep geothermal energy adheres great importance to the soil condition. One of the biggest challenges faced by geothermal power plant designers is to reduce the risk of soil exploration. To solve this problem, forecasting by modeling has proven to be an important tool to address the problem. In this research, a geo-model was established by modeling three geological layers with different hydraulic and thermal properties to solve the above dilemma. The layers, elevation, and fault zones were simulated using interpolation functions from an artificial dataset. The coupled porous media flow and heat transfer problem using Darcy’s law, as well as heat transfer in porous media interfaces, were studied. The evolution of the flow field, hydrothermal performance, and temperature gradient were also analyzed for a period of 10 years. The results showed the recoverable thermal energy area gradually moved downwards during the 10-year simulation time. When the distance between the recharge well and the production well exceeded 200 m, the collection efficiency was significantly decreased. After 5 years of extraction, the power generation efficiency of the heat source will be less than 9.75%. These results effectively avoided the exploration cost of geothermal power plant site selection, which is significant for the efficiency improvement of geothermal energy.

scholarly journals Feasibility study and energy efficiency estimation of geothermal power station based on medium enthalpy water

2007 ◽  
Vol 11 (3) ◽  
pp. 135-142 ◽  
Author(s):  
Aleksandra Borsukiewicz-Gozdur ◽  
Wladyslaw Nowak
Keyword(s):  
Energy Efficiency ◽  
Power Plant ◽  
Geothermal Energy ◽  
Geothermal Water ◽  
Power Station ◽  
Efficient Utilization ◽  
Geothermal Power Plant ◽  
Geothermal Power Station ◽  
Efficiency Estimation ◽  
Geothermal Power

In the work presented are the results of investigations regarding the effectiveness of operation of power plant fed by geothermal water with the flow rate of 100, 150, and 200 m3/h and temperatures of 70, 80, and 90 ?C, i. e. geothermal water with the parameters available in some towns of West Pomeranian region as well as in Stargard Szczecinski (86.4 ?C), Poland. The results of calculations regard the system of geothermal power plant with possibility of utilization of heat for technological purposes. Analyzed are possibilities of application of different working fluids with respect to the most efficient utilization of geothermal energy. .

Analysis of the Thermodynamic Performance of Kalina Cycle System 11 (KCS11) for Geothermal Power Plant: Comparison With Kawerau ORMAT Binary Plant

2009 ◽  
Author(s):  
Xinli Lu ◽  
Arnold Watson ◽  
Joe Deans
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Heat Source ◽  
Gas Turbines ◽  
Effective Means ◽  
Specific Power ◽  
Kalina Cycle ◽  
Geothermal Power Plant ◽  
Thermodynamic Performance ◽  
Geothermal Power

Since the first geothermal power plant was built at Larderello (Italy) in 1904, many attempts have been made to improve conversion efficiency. Among innovative technologies, using the Kalina cycle is considered as one of the most effective means of enhancing the thermodynamic performance for both high and low temperature heat source systems. Although initially used as the bottoming cycle of gas turbines and diesel engines, in the late 1980s the Kalina cycle was found to be attractive for geothermal power generation [1, 2, 3]. Different versions (KSC11, KSC12 and KSC13) were designated. Comparison between Kalina cycle and other power cycles can be found in later studies [4, 5, 6]. Here we examine KSC11, because it is specifically designed for geothermal power generation, with lower capital cost [3]. We compare this design with the existing Kawerau ORMAT binary plant in New Zealand. In addition, parametric sensitivity analysis of KCS11 has been carried out for the specific power output and net thermal efficiency by changing the temperatures of both heat source and heat sink for a given ammonia-water composition.

Kamojang Geothermal Power Plant Unit-1 : 30 Years of Operation

2014 ◽  
Vol 493 ◽  
pp. 56-61
Author(s):  
Reza Adiprana ◽  
Danu Sito Purnomo ◽  
Iwan Setiono
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
High Performance ◽  
Cooling Tower ◽  
Geothermal Field ◽  
Point Of View ◽  
Operating Conditions ◽  
Life Assessment ◽  
Geothermal Power Plant ◽  
Geothermal Power

UNIT-1 KAMOJANG geothermal power plant marked the new era of renewable energy in Indonesia. With its built capacity of 30 MWe, it constantly supply electricity to Java-Bali grid for more than 30 years now.Over those period, Unit-1 has given its best performance with highest achievement on Capacity Factor (CF) and Equivalent Availability Factor (EAF).High performance geothermal power plant involves the integration not only from the point of view of power generation, but also the optimation of geothermal potention in the area. Kamojang geothermal field, which is considered as one among five steam dominated reservoir in the world produces 200 MWe of the electricity nowadays. In order to maintain this production rate, some technical consideration must be made.Towards sustainable power generation of geothermal power, some assessment has been made to turbine, generator and cooling tower to ensure its current condition. Basically what it called remaining life assessment gives a rough picture of how long the equipment will run through in its operational condition.Based on those assessment, additional 20.900 hours is given to the turbine with the existing operating conditions. On the other hand, cooling tower infrastucture test and simulation delivers operation period for another 25 years.

scholarly journals Keunggulan, Tantangan, dan Rekomendasi Kebijakan akan Pengembangan Energi Panas Bumi di Indonesia

2020 ◽  
Vol 2 (2) ◽  
pp. 31-46
Author(s):  
Salma Zafirah Wisriansyah ◽  
◽  
Dorman Purba ◽  
Arnaldo Napitu
Keyword(s):  
Power Plant ◽  
Geothermal Energy ◽  
Large Area ◽  
Geothermal Exploration ◽  
Geothermal Power Plant ◽  
The Pacific ◽  
Geothermal Power ◽  
The Government ◽  
Plant Capacity ◽  
Exploration Phase

As a country that sits on the Pacific Ring of Fire, Indonesia has become the second largest geothermal power producer in the world. Geothermal energy is a clean-renewable energy that can help the country in reducing greenhouse gas emissions and secure its electricity supply in the future. Through Rencana Umum Energi Nasional (RUEN), government of Indonesia has set the target of building 7200 geothermal power plant capacity by 2025. However, per 2020, Indonesia has only built roughly about 2100 MW geothermal power plant capacity. This study aims to highlight geothermal’s advantages compared to other renewable energies and to discuss the biggest obstacle that had caused the sluggish development of geothermal power plant. This study is also expected to give strategic recommendations to the government to solve the biggest obstacle in developing geothermal power plant. The advantages of geothermal energy are environtmentally friendly, not intermittent, capable to be the base load, and doesn’t need a large area. This study argues that the biggest obstacle in developing geothermal power plant lies the exploration phase. Some actions had been taken by the government of Indonesia to support the exploration phase but this study believes that there are still some solutions that the government can take in order to be more supportive of geothermal exploration phase in Indonesia such as establishing geothermal-exploration entity, implementing depletion premium, and removing fossil fuel subsidy. These recommendations are expected to be capable in helping the government to achieve 7200 MW by 2025.

scholarly journals Key Elements of Environmental Justice in the Geothermal Power Plant Resistance Movement

2019 ◽  
Vol 5 (1) ◽  
pp. 65
Author(s):  
Priyo Fajar Santoso ◽  
Bevaola Kusumasari
Keyword(s):  
Power Plant ◽  
Environmental Justice ◽  
Geothermal Energy ◽  
Environmentally Friendly ◽  
Host Community ◽  
Primary Data ◽  
Geothermal Power Plant ◽  
Active Involvement ◽  
Geothermal Power ◽  
Resistance Movement

Geothermal energy is currently considered an environmentally friendly, renewable energy source. However, based on empirical data from various countries, geothermal energy production often results socio-ecological losses for the host community. Various environmental justice movements have emerged to protect environment by protesting and providing a counter discourse against the dominant perception that geothermal energy is renewable and environmentally friendly. This article aimed to understand how the strategy and discourse of the Aliansi Selamatkan Slamet (freely translated into Save Slamet Alliance) movement in rejecting the construction of the Baturraden Geothermal Power Plant (PLTPB) in Banyumas by outlining the key elements and specific conditions observed. Aliansi Selamatkan Slamet is intriguing because it has achieved active involvement of various elements through its respective perspectives to jointly reject the construction of the PLTPB. Using a theoretical framework of the movement strategy, we examined how Aliansi Selamatkan Slamet determined the selection of targets, framing, time, and relations in the resistance movement. The method was a qualitative approach: a review of primary data in the form of interviews and written documents. The results indicate sociopolitical conditions, relations between organizations, and organizational cultures also influence the strategies and discourses that the Aliansi Selamatkan Slamet movement created.

scholarly journals Hybridizing a geothermal power plant with concentrating solar power and thermal storage to increase power generation and dispatchability

2018 ◽  
Vol 228 ◽  
pp. 1837-1852 ◽  
Author(s):  
Joshua D. McTigue ◽  
Jose Castro ◽  
Greg Mungas ◽  
Nick Kramer ◽  
John King ◽  
...  
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Solar Power ◽  
Thermal Storage ◽  
Concentrating Solar Power ◽  
Geothermal Power Plant ◽  
Geothermal Power

scholarly journals GEOTHERMAL EXPLOITATION IN A WORLD HERITAGE SITE: A CASE STUDY OF GUNUNG LEUSER NATIONAL PARK

2021 ◽  
Vol 10 (1) ◽  
pp. 94
Author(s):  
Marsudi Triatmodjo ◽  
Agustina Merdekawati ◽  
Sandy Nurvianto ◽  
Irkham Afnan Trisandi Hasibuan ◽  
I Gusti Putu Agung
Keyword(s):  
Power Plant ◽  
Geothermal Energy ◽  
National Park ◽  
World Heritage ◽  
World Heritage Site ◽  
Core Zone ◽  
Geothermal Power Plant ◽  
The Core ◽  
Heritage Site ◽  
Geothermal Power

<em>Act No. 21/2014 on Geothermal Energy is considered a solution to the slow development of geothermal energy utilization for power plants by opening the way for exploitation in conservation forest areas. However, in practice, such exploitation is still constrained because it often clashes with the conservation interest. This study aims to review: (1) the role of Act No. 21/2014 as a legal justification to conduct geothermal power plant exploitation in Gunung Kembar and Gunung Waihlup within the core zone of Gunung Leuser National Park (GLNP), and (2) the potential impact of such exploitation on the international recognition of Tropical Rainforest Heritage of Sumatra (TRHS) as a world heritage. This research is normative legal research, using secondary data consisting of primary and secondary legal materials, and employs a qualitative method to analyze the data. The results showed that Act No. 21/2014 could not justify geothermal exploitation activity within the core zone of GLNP. The study also concluded that the geothermal power plant activity is projected to have the potential to compromise TRHS recognition as a world heritage site.</em>

scholarly journals Renewable hybrid energy systems using geothermal energy: hybrid solar thermal–geothermal power plant

2020 ◽  
Author(s):  
Mamdouh El Haj Assad ◽  
Mohammad Hossein Ahmadi ◽  
Milad Sadeghzadeh ◽  
Ameera Yassin ◽  
Alibek Issakhov
Keyword(s):  
Heat Transfer ◽  
Power Plant ◽  
Energy Demand ◽  
Energy Systems ◽  
Solar Thermal ◽  
Heat Transfer Fluid ◽  
Working Fluid ◽  
Geothermal Power Plant ◽  
Single Flash ◽  
Geothermal Power

Abstract New and innovative solutions are being developed to overcome the challenges of detrimental effects that the traditional energy systems cause. This means that sustainable methods are implemented to do so, noting that when such developments are taken into consideration and are studied, this leads to a significant drop in the cost of renewable energy systems. In this work, a hybrid system consisting of a single flash steam geothermal power plant and a solar thermal system using a parabolic trough collector (PTC) is studied. Based on the available works in literature, the required design materials and modeling equations are chosen and discussed. The heat transfer fluid (HTF) as water is chosen as the working fluid for the PTC due to its low cost and high specific heat capacity. The calculations are carried out for the PTC on a specific day, time and location, and the simulations for the geothermal power plant (GPP) are carried out using System Advisor Model (SAM) software, assuming a specific increase in the temperature of the geofluid due to the additional heat transfer from the HTF of the PTC. The power plant output is 20 MW powered by four production wells. The results show that the energy production is ~15 GWh in January, which is the highest during the year due to the required energy demand for electricity consumption and district heating. Moreover, a mini review of the mathematical modeling of PTC and single flash geothermal power plant is presented.

scholarly journals Indonesian Geothermal Energy Potential as Source of Alternative Energy Power Plant

KnE Energy ◽  
2015 ◽  
Vol 1 (1) ◽  
pp. 119 ◽  
Author(s):  
Puji Suharmanto ◽  
Annisa Nor Fitria ◽  
Sitti Ghaliyah
Keyword(s):  
Power Plant ◽  
Geothermal Energy ◽  
Alternative Energy ◽  
Electrical Energy ◽  
Energy Potential ◽  
Geothermal Power Plant ◽  
Total Potential ◽  
Geothermal Potential ◽  
Volcanic Formation ◽  
Geothermal Power

<p>Indonesia is known as the Ring of Fire, nearly about 40% world's geothermal potential located in Indonesia. About 252 geothermal sites in Indonesia spread following the path of volcanic formation which stretches from Sumatra, Java, Nusa Tenggara, Sulawesi, to Maluku. It has total potential of about 27 GWe. Geothermal energy as a renewable energy and environmentally friendly, this large potential needs to be upgraded the contribution to fulfill domestic energy need which is able to reduce Indonesia's dependence on fossil energy sources which are depleting. Potential for geothermal energy is expected to fulfill the target of developing geothermal energy to generate electricity through the Geothermal Power Plant of 6000 MWe in 2020.</p><p><strong>Keywords:</strong> Geothermal Energy, Electrical Energy, Geothermal Power Plant <br /><br /></p>

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