Role of royalties in sustainable geothermal energy development

Malafeh, Sam; Sharp, Basil

doi:10.1016/j.enpol.2015.06.023

Cited by 22 publications

(14 citation statements)

References 15 publications

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“…m out (1) whereṁ is the mass flow rate, and the subscript "in" stands for inlet and "out" for outlet. The general energy balance can be expressed by all energy terms as follows as below where the changes in kinetic and potential energy are neglected:…”

Section: Thermodynamic Analysismentioning

confidence: 99%

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Thermodynamic Optimization of a Geothermal- Based Organic Rankine Cycle System Using an Artificial Bee Colony Algorithm

et al. 2017

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Geothermal energy is a renewable form of energy, however due to misuse, processing and management issues, it is necessary to use the resource more efficiently. To increase energy efficiency, energy systems engineers carry out careful energy control studies and offer alternative solutions. With this aim, this study was conducted to improve the performance of a real operating air-cooled organic Rankine cycle binary geothermal power plant (GPP) and its components in the aspects of thermodynamic modeling, exergy analysis and optimization processes. In-depth information is obtained about the exergy (maximum work a system can make), exergy losses and destruction at the power plant and its components. Thus the performance of the power plant may be predicted with reasonable accuracy and better understanding is gained for the physical process to be used in improving the performance of the power plant. The results of the exergy analysis show that total exergy production rate and exergy efficiency of the GPP are 21 MW and 14.52%, respectively, after removing parasitic loads. The highest amount of exergy destruction occurs, respectively, in condenser 2, vaporizer HH2, condenser 1, pumps 1 and 2 as components requiring priority performance improvement. To maximize the system exergy efficiency, the artificial bee colony (ABC) is applied to the model that simulates the actual GPP. Under all the optimization conditions, the maximum exergy efficiency for the GPP and its components is obtained. Two of these conditions such as Case 4 related to the turbine and Case 12 related to the condenser have the best performance. As a result, the ABC optimization method provides better quality information than exergy analysis. Based on the guidance of this study, the performance of power plants based on geothermal energy and other energy resources may be improved.

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Section: Thermodynamic Analysismentioning

confidence: 99%

“…In other words, geothermal energy may be defined as thermal energy of the globe [1]. It is estimated that the crust has 5.4 billion EJ of thermal energy.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Optimization of a Geothermal- Based Organic Rankine Cycle System Using an Artificial Bee Colony Algorithm

et al. 2017

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“…Sadiq et al [13] reviewed the efficiencies of geothermal power plants based on the type of plant and the features of the geothermal fluid. Malafeh et al [2] modified an economic model illustrating the application of fiscal instruments in geothermal development for electricity generation based on simplifying assumptions. Hähnlein et al [14] and Martín-Gamboa et al [15] stimulated sustainability and policy for the thermal use of shallow geothermal energy.…”

Section: Reviews Of Geothermal Developmentmentioning

confidence: 99%

“…Excessive extraction of heat can accelerate the depletion, reduce reservoir productivity, and in some situations lead to the subsidence. In the absence of policies aimed at promoting sustainable use of the reservoirs for the foreseeable future it is quite possible that the thermal properties of the resource will be reduced to a level that cannot support electricity generation [2].…”

Section: Introductionmentioning

confidence: 99%

Mechanism of Fiscal and Taxation Policies in the Geothermal Industry in China

Jiang

Lei

et al. 2016

Energies

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Abstract:Geothermal energy is one of the cleanest sources of energy which is gaining importance as an alternative to hydrocarbons. Geothermal energy reserves in China are enormous and it has a huge potential for exploitation and utilization. However, the development of the geothermal industry in China lags far behind other renewable energy sources because of the lack of fiscal and taxation policy support. In this paper, we adopt the system dynamics method and use the causal loop diagram to explore the development mechanism of fiscal and taxation policies in the geothermal industry. The effect of the fiscal and taxation policy on the development of the geothermal industry is analyzed. In order to promote sustainable development of the geothermal industry in China, the government should pay more attention to subsidies for the geothermal industry in the life-cycle stage of the geothermal industry. Furthermore, a plan is necessary to provide a reasonable system of fiscal and taxation policies.

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“…Reinjecting the used waters into the deposit [33][34][35] would eliminate the environmental problem and would allow a faster regeneration of the aquifer, regeneration which, in the given conditions, takes place due to the reduced water catchments during the summer months. However, the costs of a restitution drilling are appreciable, and a more feasible solution is represented by the suggestion of certain specialists [25] consisting of the use of a water/water heat pump with mechanical compression.…”

mentioning

confidence: 99%

Contribution of Geothermal Resources to Energy Autonomy: Evaluation and Management Methodology

Topliceanu

Puiu

2016

Energies

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Abstract:The development of renewable energy is one of the aspirations of the European Union energy policy, being generated by the struggle against climatic changes and by the intention of achieving a high rate of energy autonomy. In this context, geothermal energy is a viable solution which has been little exploited so far. Analysing the EU's dependence on imported energy, the paper provides a short review of the utilization of geothermal energy, of the advantages and of the problems raised by the exploitation of this resource. It also analyzes the availability of this resource in Romania and the contribution it can have towards the energy autonomy of local communities. The paper presents a particular methodology for calculating the energy autonomy. Using this methodology, one can obtain an energetic overview of the community or the area analyzed, can calculate the degree of energy autonomy and, based on the results achieved, a sustainable development strategy can be designed. The low enthalpy case study used emphasizes the way this methodology can be deployed and, moreover, allows an analysis of the contribution of geothermal energy to the degree of autonomy of the Romanian community.

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Role of royalties in sustainable geothermal energy development

Cited by 22 publications

References 15 publications

Thermodynamic Optimization of a Geothermal- Based Organic Rankine Cycle System Using an Artificial Bee Colony Algorithm

Thermodynamic Optimization of a Geothermal- Based Organic Rankine Cycle System Using an Artificial Bee Colony Algorithm

Mechanism of Fiscal and Taxation Policies in the Geothermal Industry in China

Contribution of Geothermal Resources to Energy Autonomy: Evaluation and Management Methodology

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