Short answer

When designing renewable energy systems, consider the entire lifecycle impact and explore innovative working fluids that can offer co-benefits like carbon sequestration.

Field
Resource Management
Source
Clean Technologies and Environmental Policy (2024)
Method
Life Cycle Assessment (LCA)
Evidence
Moderate effect

Utilizing carbon dioxide as a working fluid in enhanced geothermal systems can provide a sustainable electricity source while simultaneously sequestering CO2, thereby reducing atmospheric greenhouse gas concentrations. This resource management research insight is drawn from a 2024 study published in Clean Technologies and Environmental Policy. Using Life cycle assessment (lca), researchers explored how this design variable affects real-world outcomes. The key design takeaway: When designing renewable energy systems, consider the entire lifecycle impact and explore innovative working fluids that can offer co-benefits like carbon sequestration.

Study
Resource ManagementRecentModerate effect

CO2-based Geothermal Energy Systems Offer Sustainable Power with Reduced Environmental Footprint

Utilizing carbon dioxide as a working fluid in enhanced geothermal systems can provide a sustainable electricity source while simultaneously sequestering CO2, thereby reducing atmospheric greenhouse gas concentrations.

Clean Technologies and Environmental Policy · 2024

01

Key Findings

  • 01The construction phase of the sCO2-EGS facility has a significant environmental impact.
  • 02Varying the mass flow rate of the CO2 working fluid influences the overall carbon footprint.
  • 03The system offers potential for both clean energy generation and CO2 sequestration.
02

Application

Design takeaway

When designing renewable energy systems, consider the entire lifecycle impact and explore innovative working fluids that can offer co-benefits like carbon sequestration.

How to apply

When evaluating new energy technologies, conduct a comprehensive LCA that includes potential for carbon capture and utilization, not just energy output.

Project actions

  • 01When conducting an LCA, clearly define the system boundaries and all stages of the product's life.
  • 02Use specialized software like SimaPro to accurately model and quantify environmental impacts.
03

Method & Evidence

AimTo assess the environmental impact of enhanced geothermal systems (EGS) using carbon dioxide as a working fluid through a life-cycle analysis.
MethodLife Cycle Assessment (LCA)
ProcedureAn LCA framework was adapted and applied to a specific EGS configuration using supercritical CO2 (sCO2-EGS) for electricity production in Poland. The study involved modelling energy and material consumption across all life cycle stages, from raw material extraction to end-of-life, and quantifying environmental impacts using SimaPro software.
ContextEnhanced Geothermal Systems (EGS) for electricity production, specifically in a Polish case study.

Variables

IVWorking fluid type (CO2 vs. traditional), working fluid mass flow rate.
DVEnvironmental impact categories (e.g., carbon footprint, energy consumption, resource depletion).
CVGeographical location (Poland), EGS configuration (direct expansion turbine), LCA methodology and software.
04

Strengths & Limitations

Strengths

  • +Comprehensive life cycle perspective.
  • +Application of a recognized LCA methodology.
  • +Focus on a novel and potentially impactful technology.

Limitations

The accuracy of the LCA is dependent on the quality and availability of data for each life cycle stage, which can be challenging to obtain.

Reliability & validity

The reliability of the LCA depends on the accuracy of the input data and the chosen modelling software. Validity is enhanced by adhering to established LCA standards and clearly defining system boundaries.

Think critically

To what extent can the environmental benefits of CO2 sequestration in EGS outweigh the impacts associated with the construction and operation of the facility?

05

Design Principles

"Design for dual-purpose functionality: achieve primary energy generation goals while simultaneously addressing environmental remediation."

This approach presents a dual benefit for design practice: it addresses the growing demand for renewable energy and offers a tangible solution for carbon capture and utilization. Designers can explore integrating such systems into broader energy infrastructure projects, considering the entire lifecycle impact from material sourcing to operational emissions.

06

What This Means for Your Design

Using CO2 to power geothermal energy plants can be good for the environment because it makes electricity and also removes CO2 from the air, though building the plant itself has an environmental cost.

How to use in your project

  • 1.Reference this study when discussing the environmental impact of energy generation technologies or the application of LCA in design projects.
07

Add to My Project

08

Quick Cite

Paragraph starter

A life cycle assessment of enhanced geothermal systems utilizing carbon dioxide as a working fluid, as demonstrated by Starczewska et al. (2024), reveals the potential for dual benefits in clean energy production and carbon sequestration. The study emphasizes that while the construction phase presents significant environmental considerations, the operational phase can contribute to reducing atmospheric CO2 levels. This highlights the importance of a holistic design approach that accounts for the entire product lifecycle when developing sustainable energy solutions.

09

Source

Clean Technologies and Environmental Policy

Life cycle assessment of enhanced geothermal systems with CO2 as a working fluid—polish case study

journal · 2024

View source

Questions About This Research

What does the research say about co2-based geothermal energy systems offer sustainable power with reduced environmental footprint?
When designing renewable energy systems, consider the entire lifecycle impact and explore innovative working fluids that can offer co-benefits like carbon sequestration. Evidence: Clean Technologies and Environmental Policy (2024).
Why does "CO2-based Geothermal Energy Systems Offer Sustainable Power with Reduced Environmental Footprint" matter for design?
This approach presents a dual benefit for design practice: it addresses the growing demand for renewable energy and offers a tangible solution for carbon capture and utilization. Designers can explore integrating such systems into broader energy infrastructure projects, considering the entire lifecycle impact from material sourcing to operational emissions.
How can designers apply this research?
When designing renewable energy systems, consider the entire lifecycle impact and explore innovative working fluids that can offer co-benefits like carbon sequestration.
What were the main findings?
The construction phase of the sCO2-EGS facility has a significant environmental impact.. Varying the mass flow rate of the CO2 working fluid influences the overall carbon footprint.. The system offers potential for both clean energy generation and CO2 sequestration.
What research method was used?
Life Cycle Assessment (LCA).
How strong is the evidence?
Evidence strength is rated Moderate effect, based on a 2024 journal from Clean Technologies and Environmental Policy.
What should I do differently in my next project?
When evaluating new energy technologies, conduct a comprehensive LCA that includes potential for carbon capture and utilization, not just energy output.
What are the limitations?
The study's findings are specific to the Polish context and the particular EGS configuration modelled. Further research is needed to generalize these results across different geographical locations and system designs.