Phase change material based fluid emulsion for enhanced geothermal recovery

用于增强地热采收的基于相变材料的流体乳液

• 批准号: 549600-2019
• 负责人: Sinton, David
• 金额: $ 13.92万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=701208
• 关键词: Phase; change; material; based; fluid

The overall energy conversion efficiency for conventional geothermal power plants is low compared to fossil fuel and nuclear power plant (>30%). Improving this efficiency is a key challenge for geothermal systems, and a necessary step to wider adoption of the technology. Eavor Technologies Inc. has pioneered a new closed-loop geothermal approach, which adapts horizontal drilling methods pioneered in unconventional oil and gas operations to clean geothermal heat extraction. The Eavor-Loop levers powerful passive thermosiphon pumping and as a closed system, permits the use of engineered working fluids that can more effectively extract heat from rock formations deep underground. The Sinton group is partnering with Eavor Technologies to develop and test working fluids that will increase the heat recovery rate and overall efficiency of the Eavor Loop. A 10% increase in thermal performance would have broad implications for the industry and accelerate the scaling and deployment of this made-in-Canada closed-loop geothermal technology. Phase change materials are excellent candidates and are the primary focus of this partnership. In a geothermal recovery fluid system such as the Eavor Loop, phase change material can store heat as latent heat, which increases the effective heat capacity of the fluid blend during the geothermal cycle. There are many phase change material candidates that are suitable for working at geothermal pressures (such as Al2(SO4)3-16H2O), as well as the extended pressure and temperature range of interest to Eavor. The Sinton group is the global leader in the area of microfluidic-based chemical performance testing, with particular strength in subsurface energy applications and associated temperatures and pressures. Just as Eavor's renewable energy approach is enabled by technology first developed for the oil and gas industry, the proposed fluid development approach here is enabled by the Sinton group`s past experience in chemical effectiveness testing for the oil and gas industry. Through this Alliance, these technologies will be innovated, adapted and applied - by Eavor and U of T team members together - to advance renewable energy.

与化石燃料和核电厂相比，传统地热发电厂的整体能量转换效率较低（>30%）。提高这种效率是地热系统面临的一个关键挑战，也是更广泛采用该技术的必要步骤。Eavor Technologies Inc.开创了一种新的闭环地热方法，该方法采用了非常规石油和天然气作业中开创的水平钻井方法，以清洁地热提取。Eavor-Loop利用强大的被动热虹吸泵送功能，作为一个封闭系统，允许使用工程工作流体，可以更有效地从地下深处的岩层中提取热量。 辛顿集团正在与Eavor Technologies合作开发和测试工作流体，以提高Eavor Loop的热回收率和整体效率。热性能提高10%将对该行业产生广泛影响，并加速这种加拿大制造的闭环地热技术的扩展和部署。相变材料是很好的候选材料，也是这种合作关系的主要焦点。在地热回收流体系统（例如Eavor Loop）中，相变材料可将热存储为潜热，这增加了地热循环期间流体共混物的有效热容量。有许多相变材料候选者适合在地热压力下工作（如Al 2（SO 4）3·16 H2O），以及Eavor感兴趣的扩展压力和温度范围。辛顿集团是基于微流体的化学性能测试领域的全球领导者，在地下能源应用以及相关温度和压力方面具有特别的优势。正如Eavor的可再生能源方法是通过首先为石油和天然气行业开发的技术实现的，这里提出的流体开发方法是通过辛顿集团过去在石油和天然气行业化学有效性测试方面的经验实现的。 通过这个联盟，这些技术将被创新，调整和应用-由Eavor和T的团队成员一起-以推进可再生能源。