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Geothermal Energy from Mines and Solar-Geothermal heat (GEMS)

矿山地热能和太阳能地热能 (GEMS)

基本信息

批准号：
EP/V042564/1
负责人：
Jeroen Van Hunen
金额：
$ 181.16万
依托单位：
Durham University
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2021
资助国家：
英国
起止时间：
2021 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FV042564%2F1
关键词：
Geothermal Energy Mines Solar heat

项目摘要

Over half of UK's energy demand is from heat, and most of it is provided by fossil fuels. While coal mining has stopped, the water within flooded abandoned mines provide a huge source (2.2 million GWh) of low-carbon, geothermal heat for the future, enough to heat all UK houses for >100 years! The mine water is only lukewarm (12-20 degC), but with heat pumps, temperatures are increased to a more comfortable 40-50 degC. Heat pumps produce 3-4x the energy than they use, making mine water geothermal heating (MWGH) an efficient energy source. But research is required to make MWGH competitive, technically and logistically feasible, and desirable: which collieries are suitable for sustainable heat extraction? MWGH requires district heating networks between premises, so how can we overcome the associated hurdles for setting those up? Can MWGH handle seasonal heat demands reliably? Can MWGH financially compete with the established gas boiler? Do local communities want such change to greener heat? This project will examine these components of MWGH, from the initial geothermal heat extraction, to the logistics of heat storage and delivery, the political and financial landscape for MWGH, and involving local communities in all this.Detailed knowledge of mine water circulation and thermal interaction with the rocks is essential for the success of MWGH. Prior to expensive drilling, numerical models help predict how suitable a mine system is. WP1 will address this using innovative, detailed mine thermal flow models that are fast, so can easily run thousands of flow scenarios to find optimal settings, and are easily tailored towards individual mine plans to investigate case studies. Simulations will be calibrated against flow experiments at GGERFS, the UKGEOS Geothermal Research centre, while project partners provide mine plans, pumping and geological data from several sites. Valuable, unrecorded mine information available within former mining communities will be collected to supplement the mine knowledge and accuracy of the simulations. Heat pumps will increase the temperature of the extracted mine water for local heating purposes. But to meet seasonally fluctuating heat demands, heat storage is essential. WP2 will address this through novel solar-geothermal heat collection that utilizes both underground and overground storage. Solar heat drives sorption reactions, and access heat is released to mine water and stored underground, thereby supporting the long-term heat capacity of the mines. The experimental design of such storage system will be tested and optimized at GGERFS. The success of introducing MWGH depends on many political, financial and social aspects too. Without a favourable regulatory and financial landscape, the major undertaking of installing a MWGH system may be too risky. And without closely working with local councils, the Coal Authority, the Environmental Agency, and local communities, these schemes often fail. WP3 addresses these aspects, by critically analysing the regulations and procedures to start new mine geothermal heating schemes, map out and analyse the financial landscape, and investigate how local communities, scientists, and government agencies can work together to create financially successful and socially just interventions. Present and historic case studies from NE England and Wales will serve to test all aspects of the proposal.So MWGH projects require an interdisciplinary approach as we are proposing here. WP4 will oversee the project and ensure, 1) that learning within and across WP's is shared and integrated to enrich the whole and, 2) that the communities, various research groups, local industries and project partners have opportunities to fully integrate and collaborate across the entire project. In summary, this project provides technical, logistical, political, financial, and social solutions for MWGH projects to decarbonize heating in the UK.

英国一半以上的能源需求来自热能，其中大部分由化石燃料提供。虽然煤矿开采已经停止，但废弃矿井中的水为未来提供了巨大的低碳地热资源（220万GWh），足以为英国所有房屋供暖超过100年！矿井水只有微温（12-20摄氏度），但有了热泵，温度提高到更舒适的40-50摄氏度。热泵产生的能量是它们使用的能量的3- 4倍，使矿井水地热加热（MWGH）成为一种有效的能源。但是，需要进行研究，使MWGH具有竞争力，技术和后勤可行，并可取的：哪些煤矿适合可持续的热提取？MWGH需要房屋之间的区域供热网络，那么我们如何克服设置这些网络的相关障碍呢？MWGH能可靠地处理季节性的热量需求吗？MWGH在经济上能否与现有的燃气锅炉竞争？当地社区是否希望这种改变更绿色的热量？该项目将研究MWGH的这些组成部分，从最初的地热提取，到热量储存和输送的物流，MWGH的政治和金融景观，并让当地社区参与其中。详细了解矿井水循环和与岩石的热相互作用对MWGH的成功至关重要。在昂贵的钻探之前，数值模型有助于预测采矿系统的适用性。WP 1将使用创新的、详细的矿井热流模型来解决这一问题，这些模型速度快，可以轻松运行数千个流动场景以找到最佳设置，并且可以轻松针对单个矿井计划进行定制，以调查案例研究。模拟将根据UKGEOS地质研究中心GGERFS的流动实验进行校准，而项目合作伙伴则提供来自多个地点的采矿计划、抽水和地质数据。将收集前采矿社区内可用的有价值的未记录矿山信息，以补充矿山知识和模拟的准确性。热泵将提高提取的矿井水的温度，用于局部加热目的。但为了满足季节性波动的热量需求，蓄热是必不可少的。WP 2将通过利用地下和地上储存的新型太阳能地热收集来解决这一问题。太阳热驱动吸附反应，进入的热量被释放到矿井水中并储存在地下，从而支持矿井的长期热容量。这种储存系统的实验设计将在GGERFS进行测试和优化。引进MWGH的成功取决于许多政治，财政和社会方面。如果没有一个有利的监管和金融环境，安装MWGH系统的主要任务可能风险太大。如果没有与地方议会、煤炭管理局、环境局和当地社区密切合作，这些计划往往会失败。WP 3通过批判性地分析法规和程序来解决这些问题，以启动新的矿井地热供暖计划，绘制和分析金融景观，并调查当地社区，科学家和政府机构如何共同努力，创造经济上成功和社会公正的干预措施。来自英格兰东北部和威尔士的当前和历史案例研究将用于测试提案的各个方面。因此，MWGH项目需要跨学科的方法，因为我们在这里提出。WP 4将监督该项目，并确保：1）WP内部和WP之间的学习得到共享和整合，以丰富整个项目; 2）社区，各种研究小组，当地行业和项目合作伙伴有机会在整个项目中充分整合和合作。总之，该项目为MWGH项目提供了技术，物流，政治，财务和社会解决方案，以实现英国供暖脱碳。