Enhanced geothermal systems (EGS): A review

Olasolo, P.; Juárez, M.C.; Morales, M.P.; ́Amico, Sebastiano D; Liarte, I.A.

doi:10.1016/j.rser.2015.11.031

Cited by 507 publications

(186 citation statements)

References 77 publications

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“…The industry data and expert knowledge are crucial to make the calculated results accurate and reasonable. The comprehensive design has the following advantages: (1) it is independent of geographical restrictions of natural hydrothermal and marine energy resources [13,14,16,17]; (2) it is flexible in energy uses including wind, solar and traditional resources [2,18,22]; and (3) it uses practical and generalizable assumptions for engineers and policy-makers.…”

Section: Discussionmentioning

confidence: 99%

Hybrid Energy System with Optimized Storage for Improvement of Sustainability in a Small Town

2018

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Abstract:With the rise of renewable energy comes significant challenges and benefits. The current studies on the incorporation of renewable-energy policies and energy-storage technologies attempt to address the optimization of hybrid energy systems (HESs). However, there is a gap between the currents needs of HES in small towns for energy independence and the understanding of integrated optimization approaches for employing the technology. The purpose of this research is to determine the technical, systematic and financial requirements needed to allow a city or community to become independent of the utilization of traditional energy and develop a reliable program for a clean and environment-friendly energy supply. This paper presents the sensitivity analysis and Bayesian prediction (SABP) method for the optimized design of a hybrid photo-voltaic wind energy system. This method uses the actual data to analyze and compare the main, optimized and desired scenarios of HES designs. The results show that optimized design can minimize the cost of the energy generated while reliably matching local electricity demand. The SABP system helps to eliminate the dependence on traditional energy resources, reduce transition costs by purchasing electricity, and decrease the financial burden of a small city.

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Section: Discussionmentioning

confidence: 99%

Hybrid Energy System with Optimized Storage for Improvement of Sustainability in a Small Town

2018

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“…In fact, geothermal power co-production with oil well operation is a useful DG application for satisfying power demand at remote oil fields [169]. Enhanced geothermal system (EGS) could be a potent technology for converting this much overlooked underground resource into electricity utility, as extensively reviewed by Olasolo et al [170]. A number of simulation studies were conducted to investigate the impacts of thermal reservoir depth, fluid injection rate, working fluid loss [171], permeability, porosity, fracture thickness and wellbore configuration [172] on geothermal power production.…”

Section: Dg System Configuration Designmentioning

confidence: 99%

Review of distributed generation (DG) system planning and optimisation techniques: Comparison of numerical and mathematical modelling methods

Theo

Lim

et al. 2017

Renewable and Sustainable Energy Reviews

225

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“…If hot dry rock is defined as the rocks in excess of 150 • C, then in other words, 150 • C is set as the lower boundary of temperature for the HDR geothermal resource [43,44]. The HDR geothermal resource is widely but unevenly developed at a great depth in the study area.…”

Section: The Heat Content From 3 To 5 Kmmentioning

confidence: 99%

Estimate of Hot Dry Rock Geothermal Resource in Daqing Oilfield, Northeast China

et al. 2016

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Development and utilization of deep geothermal resources, especially a hot dry rock (HDR) geothermal resource, is beneficial for both economic and environmental consideration in oilfields. This study used data from multiple sources to assess the geothermal energy resource in the Daqing Oilfield. The temperature logs in boreholes (both shallow water wells and deep boreholes) and the drilling stem test temperature were used to create isothermal maps in depths. Upon the temperature field and thermophysical parameters of strata, the heat content was calculated by 1 km × 1 km × 0.1 km cells. The result shows that in the southeastern part of Daqing Oilfield, the temperature can reach 150 • C at a depth of 3 km. The heat content within 3-5 km is 24.28 × 10 21 J, wherein 68.2% exceeded 150 • C. If the recovery factor was given by 2% and the lower limit of temperature was set to be 150 • C, the most conservative estimate for recoverable HDR geothermal resource was 0.33 × 10 21 J. The uncertainties of the estimation are mainly contributed to by the temperature extrapolation and the physical parameter selections.

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Enhanced geothermal systems (EGS): A review

Cited by 507 publications

References 77 publications

Hybrid Energy System with Optimized Storage for Improvement of Sustainability in a Small Town

Hybrid Energy System with Optimized Storage for Improvement of Sustainability in a Small Town

Review of distributed generation (DG) system planning and optimisation techniques: Comparison of numerical and mathematical modelling methods

Estimate of Hot Dry Rock Geothermal Resource in Daqing Oilfield, Northeast China

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