实施微型能源桩:提高电力变压器地基安全性和冷却系统效率的新型地热能采集技术

IF 3.5 2区 工程技术 Q3 ENERGY & FUELS Geothermics Pub Date : 2024-07-05 DOI:10.1016/j.geothermics.2024.103097
Amir Akbari Garakani , Ali Derakhshan
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引用次数: 0

摘要

在对微型能源桩(MEP)进行数值评估,以提高 400 千伏变压器的地基承载力(Qu)和冷却效率后,进行了经济评价。研究结果表明,增加温差、微能桩长度、灌浆粘聚力,尤其是微能桩直径,可将地基承载力分别提高 6%-29%、25%、22%-26% 和 96%-123%。根据不同土壤的经济可行性,推荐了最佳的 MEP 配置,较高的热交换率和灌浆粘聚力可产生具有成本效益的解决方案。对提高曲流和冷却功率的可行方案的探索表明,在可比条件下,利用 MEP 比能量桩和螺旋能量桩的成本效益分别高出 26% 和 31%。
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Implementing micro energy piles: A novel geothermal energy harvesting technique for enhancing foundation safety and cooling system efficiency in electric power transformers

The numerical assessment of Micro Energy Piles (MEPs) to enhance foundation bearing capacity (Qu) and cooling efficiency of 400-kV transformers is followed by economic evaluations. Findings show that increasing temperature-differential, MEP length, grout cohesion, and especially MEP diameter can increase Qu by 6–29 %, 25 %, 22–26 %, and 96–123 %, respectively. Optimal MEP configurations are recommended based on economic viability across different soils, with higher heat-exchange rates and grout cohesion yielding cost-effective solutions. Exploring viable options to improve Qu and cooling power demonstrates that utilizing MEPs is 26 % and 31 % more cost-effective than energy piles and helical energy piles, respectively, under comparable conditions.

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来源期刊
Geothermics
Geothermics 工程技术-地球科学综合
CiteScore
7.70
自引率
15.40%
发文量
237
审稿时长
4.5 months
期刊介绍: Geothermics is an international journal devoted to the research and development of geothermal energy. The International Board of Editors of Geothermics, which comprises specialists in the various aspects of geothermal resources, exploration and development, guarantees the balanced, comprehensive view of scientific and technological developments in this promising energy field. It promulgates the state of the art and science of geothermal energy, its exploration and exploitation through a regular exchange of information from all parts of the world. The journal publishes articles dealing with the theory, exploration techniques and all aspects of the utilization of geothermal resources. Geothermics serves as the scientific house, or exchange medium, through which the growing community of geothermal specialists can provide and receive information.
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