Belliardi Marco, Soma Linda, Perego Rodolfo, Pera Sebastian, Di Sipio Eloisa, Zarrella Angelo, Carnieletto Laura, Galgaro Antonio, Badenes Borja, Pasquali Riccardo, Bertermann David, Sanner Burkhard
University of Applied Sciences of Southern Switzerland, Mendrisio, 6850, Switzerland.
University of Padua, Padova, 35131, Italy.
Open Res Eur. 2022 Nov 25;2:58. doi: 10.12688/openreseurope.14665.2. eCollection 2022.
The "Most Easy, Efficient and Low Cost Geothermal Systems for Retrofitting Civil and Historical Buildings" (GEO4CIVHIC) project aims to accelerate the deployment of shallow geothermal systems for heating and cooling purposes when retrofitting existing and historical buildings. Analyzing the implementation process of borehole heat exchangers (BHEs), allows the understanding of how to promote the long-term sustainability of shallow geothermal energy systems. The thermal interference between BHE systems represents a problem, especially due to the increasing deployment of this technology and its spread in densely built-up areas. The main goal of this paper is to propose a conceptual model and to apply this to different case studies. The methodology includes phases to adopt an integrated approach for preventing long term thermal interference in neighbouring borehole heat exchangers, by providing management strategies and technical suggestions for design and operation. The method developed follows the following steps: 1) literature review to determine what are the main drivers for thermal interference between shallow geothermal systems, in the context of the GEO4CIVHIC project case study sites; 2) to create a conceptual model to limit thermal interference at both design and operational phases; 3) to apply the developed method to real and virtual case studies in countries with different regulatory frameworks and to test its main strengths and weaknesses. The application of this conceptual model to specific case studies provides evidence of critical planning and operational characteristics of GSHP systems and allows the identification of measures to mitigate impacts of thermal interference to be identified.
“用于既有民用和历史建筑改造的最简易、高效且低成本地热系统”（GEO4CIVHIC）项目旨在加快在既有建筑和历史建筑改造中用于供热和制冷的浅层地热系统的部署。分析钻孔热交换器（BHE）的实施过程，有助于理解如何促进浅层地热能系统的长期可持续性。BHE系统之间的热干扰是一个问题，尤其是由于这项技术的部署不断增加且在密集建成区扩散。本文的主要目标是提出一个概念模型并将其应用于不同的案例研究。该方法包括多个阶段，通过提供设计和运营的管理策略及技术建议，采用综合方法来防止相邻钻孔热交换器的长期热干扰。所开发的方法遵循以下步骤：1）文献综述，以确定在GEO4CIVHIC项目案例研究地点的背景下，浅层地热系统之间热干扰的主要驱动因素；2）创建一个概念模型，以在设计和运营阶段限制热干扰；3）将所开发的方法应用于具有不同监管框架的国家的实际和虚拟案例研究，并测试其主要优缺点。将这个概念模型应用于特定案例研究，为地源热泵系统的关键规划和运营特征提供了证据，并有助于确定减轻热干扰影响的措施。
