Guide for geothermal probe field planners under sports turf
Project report and guidelines for planners
The project
Client: City of Zurich Energy Officer and Grün Stadt Zürich
Duration: 2024
A central element for a fossil-free heat supply is the use of heat from geothermal probes. When creating geothermal probe fields under sports turf areas, great importance is attached to the compatibility of the energy goals with the use of the sports turf and the preservation of the accompanying greenery in the municipal sports facilities.
In the project "Effects of geothermal probe fields on sports turf", the effects of geothermal probes on the soil temperature in the root zone of accompanying greenery and sports turf as well as the problem of soil compaction were investigated. Another important aspect was the coordination between the various stakeholders in order to avoid delays and high costs and at the same time ensure a playing surface that can be used in the long term.
A central element for a fossil-free heat supply is the use of heat from geothermal probes. When creating geothermal probe fields under sports turf areas, great importance is attached to the compatibility of the energy goals with the use of the sports turf and the preservation of the accompanying greenery in the municipal sports facilities.
In the project "Effects of geothermal probe fields on sports turf", the effects of geothermal probes on the soil temperature in the root zone of accompanying greenery and sports turf as well as the problem of soil compaction were investigated. Another important aspect was the coordination between the various stakeholders in order to avoid delays and high costs, while at the same time ensuring a usable playing surface in the long term.
Leading workshops and moderating the 12-member working group, including documentation
Addressing problems during planning and implementation
Support in finding solutions:
- Visualization of the process flow within the city depending on the initiator
- Organizational chart Proposal for implementation
Overview of the ground temperature profiles without and with geothermal probe fields
Solar radiation versus heat flow of the geothermal probe field
Summary of challenges in the planning and construction of sports turf
Compilation of the core factors of ecologically sustainable planning and construction of geothermal probe fields
Guide with checklist for planners
Challenges
Different interests and priorities of the participants
Ensuring a constructive and goal-oriented discussion
Clear documentation of results and recording of consensus points
Dealing with differences of opinion
Recognizing and addressing points of conflict at an early stage
Weighing up technical, ecological and economic aspects
Delays due to lack of coordination with specialist departments
Consideration of long-term sustainability aspects
Clarification of responsibilities and allocation of roles
Identification of relevant players and interfaces
Discussion Need for modeling or measurement
Delimitation of the influence of solar radiation and geothermal probes
Limited experience from comparable projects
Requirements for turf quality and resilience
Need for interdisciplinary coordination between construction, environment and sports authorities
Identification and weighting of the relevant ecological factors
Balance between depth of detail and practicality
Our solutions
In order to meet the complex challenges involved in planning and implementing geothermal probe fields on urban sports turf, a structured and interdisciplinary approach was chosen. A clearly defined meeting structure with a workshop and two targeted meetings involved all relevant stakeholders at an early stage. This enabled both a constructive discussion and a practice-oriented solution to be found.
Particular emphasis was placed on the visualization of process flows, the clarification of responsibilities and interfaces as well as the consideration of technical and ecological aspects. Structured moderation and transparent documentation enabled points of conflict to be identified at an early stage and joint solutions to be developed.
In addition to a project report, the result was a practical guide for planners that serves as an orientation aid for future projects.
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