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The world is facing the energy challenge to over-reliance to fossil-fuels,the development of renewable energy is inevitable.From a clean and economic view,enhanced geothermal system(EGS)provides an effective mean to utilize geothermal energy to generate.Different form the conventional hydro geothermal,the host rock of EGS is Hot Dry Rock(HDR),which buries deeper with high temperature(more than 180°C).The generation of EGS is promising.The development of EGS can be combined with the tech Power to geothermal energy.Exceed power is supposed to drive fluid working in HDR layer to obtain geothermal energy for generation.The whole article can be divided into three parts.In the first art,evaluation indexes of EGS as well as pilot EGs Projects(e.g.Fenton Hill and Basel)and exiting EGS project(e.g.Paralana and Newberry)are summarized,which points a general impression on EGS site.The dominate indexes are heat flow,geothermal gradient and thermal storage.The second part is focused on the simulation methods and working fluids selection of EGS.A detailed comparison of the main simulation software(e.g.TOUGH2 and FEHM)is carried out.With the respect of working fluid selection,the comparison between water and CO2 is researched and CO2 is a preferred option for EGS development for less fluid loss and less dissolution to HDR.The art of CO2-EGS is introduced clearly in this part.The third part is about the addition consideration of EGS plant operation,it excludes auxiliary plant support and HSE management.
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篇名 An Overview of EGS Development and Management Suggestions
来源期刊 建筑与工程前沿研究(英文) 学科 地球科学
关键词 EGS Energy Challenge Hot Dry Rock
年,卷(期) 2020,(3) 所属期刊栏目
研究方向 页码范围 6-39
页数 34页 分类号 P31
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EGS
Energy
Challenge
Hot
Dry
Rock
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期刊影响力
建筑与工程前沿研究(英文)
季刊
2591-7595
12 Eu Tong Sen Stree
出版文献量(篇)
61
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0
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