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Investigation on geothermal water reservoir development and utilization with variable temperature regulation: A case study of China

机译：可变温度调节地热水库开发利用的调查 - 以中国为例

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摘要

Geothermal heating technology is an important technique for alleviation of energy crisis and environmental pollution. A numerical simulation and multi-objective optimisation for geothermal heating systems are conducted considering factors such as the heating load, heating modes, and region characteristics. Heating modes play a vital role in the utilization of geothermal reservoirs. It is found that regulated geothermal heating system can postpone the formation of thermal breakthroughs and shrink radius of the cold front. It's also indicated that well spacing and production rate are the two main factors affecting the production performance and emission reduction of geothermal heating systems. Construction investment of geothermal wells and the annual water consumption of regulated geothermal heating system decreases by up to 30% and 60%, comparing with unregulated geothermal heating system, although electricity costs increase by 5% to 25%. Multi-objective optimized heating system parameters for Qingfeng project in China are achieved. The best regulated geothermal heating system with well spacing of 295 m and production rate of 100 m(3)/h generates the highest efficiencies in terms of heat production, emission reduction, and economic performance. The mathematical model and multi-objective optimization model can provide references for utilization of geothermal heating technology in other places with similar conditions.
机译：地热加热技术是减轻能源危机和环境污染的重要技术。考虑到诸如加热载荷，加热模式和区域特性的因素进行了对地热加热系统的数值模拟和多目标优化。加热模式在利用地热储层中起着至关重要的作用。发现调节的地热加热系统可以推迟形成热突破和冷锋的缩小半径。还表明，井间距和生产率是影响地热加热系统生产性能和减排的两个主要因素。地热井的建设投资和规范的地热量加热系统的年消耗量高达30％和60％，与无管地热加热系统相比，尽管电力成本增加了5％至25％。实现了中国清丰工程的多目标优化加热系统参数。具有井间距的最佳规定的地热加热系统295米，100米（3）/ h的生产率在热量生产，减排和经济性能方面产生最高效率。数学模型和多目标优化模型可以提供具有类似条件的其他地方在其他地方使用地热加热技术的参考。

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  • 来源
    《Applied Energy》 |2020年第1期|115370.1-115370.10|共10页
  • 作者

    Fan Huifang; Zhang Luyi; Wang Ruifei; Song Hongqing; Xie Hui; Du Li; Sun Pengguang;

  • 作者单位

    Univ Sci & Technol Beijing Sch Civil & Resource Engn 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Univ Sci & Technol Beijing Sch Civil & Resource Engn 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Xian Shiyou Univ Coll Petr Engn Xian 710065 Peoples R China;

    Univ Sci & Technol Beijing Sch Civil & Resource Engn 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Univ Sci & Technol Beijing Sch Civil & Resource Engn 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Sinopec Star Petr Co Ltd 263 N 4th Ring Rd Middle Beijing 100083 Peoples R China;

    Sinopec Star Petr Co Ltd 263 N 4th Ring Rd Middle Beijing 100083 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Geothermal heating systems; Variable temperature; Multi-objective optimisation; Payback time; Financial analysis;

    机译：地热加热系统;可变温度;多目标优化;投资回收期;财务分析;

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