Project Image Pool

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Terms of use: The pictures on this site originate from the projects in the frame of the programmes City of Tomorrow, Building of Tomorrow and the IEA Research Cooperation. They may be used credited for non-commercial purposes under the Creative Commons License Attribution-NonCommercial (CC BY-NC).

Contact angle measurement on membrane

A defined drop of a liquid is deposited on the membrane to be analyzed. The contact angle between the membrane and the liquid is then measured.

supercritical CO2 cycle

supercritical CO2 cycle for electrification of waste heat at the Institute for Energy Systems and Thermodynamics (TU Wien)

sandTES

active fluidized bed storage "sandTES" of the Institute for Energy Systems and Thermodynamics (TU Wien)

IEA DHC Annex TS8: Overview of subtasks

The international cooperation within the IEA DHC Annex TS8 is structured into 5 work packages (subtasks).

IEA DHC Annex TS8: 2. Working Phase Meeting (Picture 1/2)

The international cooperation in IEA DHC Annex TS8 also includes working meetings. The 2nd working meeting took place on 26/27 November 2024 at the DTU Risø Campus.

IEA DHC Annex TS8: Example laboratory middleware

Example of using a laboratory middleware for connecting a laboratory test stand with real-time simulation models. The same approach can be used to connect geographically distributed laboratory setups.

IEA DHC Annex TS8: 2. Working Phase Meeting (Picture 2/2)

The international cooperation in IEA DHC Annex TS8 also includes working meetings. The 2nd working meeting took place on 26/27 November 2024 at the DTU Risø Campus.

Gruppenfoto IETS Task 21 Consortium Meeting in Graz

On April 9, 2024, a full-day meeting of IETS Task 21 took place in Graz. The meeting provided a valuable platform for exchanging insights and planning further steps for the successful implementation of the tasks within Task 21.

Vision of the Energy/Carbon Future of Upper Austria 2040

The figure shows the visualized vision developed by the Energy Institute at the JKU in coordination with the stakeholders, which represents possible energy and resource exchanges in 2040 in annual quantities.

Graphic illustration of different terms from Zeilerbauer et al. (2024)

Figure from Zeilerbauer et al. (2024) (https://doi.org/10.1080/17583004.2024.2408285), which uses a use case to discuss different terms from the area of ​​Circular Carbon.

Digital Twins can serve as virtual components in lab setups.

Mapping of a proof-of-concept test case to the DigitalEnergyTestbed setup using the Digital Twin of the DH substation test stand.

System-level Control of a Heating Grid with Sector Coupling

Exemplary Configuration of a simple heating grid, considering sector coupling through CHP and heat pump by forward-looking system control

Development of technology specific indicators

Concept of energy-economic evaluations with the key figure "Cost Reduction Gradient" (CRG) in €/(MWh·°C)

left: The vicious circle of high system temperatures (lock-in), right: The added value of low system temperatures

presentation of the different relations between system temperatures, supply structures, the effect on the system and the end users

Different integration levels of high-temperature heat pumps and their effects

The graphic shows various levels at which the integration of a high-temperature heat pump can take place, as well as the effects. A more detailed description can be found in the Task 3 report of the IEA HPT Annex 58 and in the guideline for the development of a decarbonization strategy (https://heatpumpingtechnologies.org/annex58/task-3/).

General comparison between steam generation with natural gas-fired boilers and heat pump technologies

The graphic shows conventional steam generation with natural gas-fired boilers compared to steam generation with heat pump technologies. In steam generation with natural gas-fired boilers, the steam is generated at least at the highest pressure level needed in the production process and then expanded to lower pressure levels. In comparison, when generating steam with a heat pump, it is advantageous if only the amount of steam required at the corresponding pressure level is also generated at this pressure level. Expansion to a lower temperature level should be avoided when using heat pumps. More information on steam generation with heat pumps can be found in the IEA HPT Annex 58 Task 2 report (https://heatpumpingtechnologies.org/annex58/task-2-integration-concepts/).

Maximum supply temperature as a function of heat capacity

The graphic shows the maximum supply temperature of high-temperature heat pump technologies from different manufacturers as a function of the heat capacity. More information on the individual technologies is published on the IEA HPT Annex 58 website (https://heatpumpingtechnologies.org/annex58/task1/).

Connections in the development of a decarbonization strategy

The graphic shows different parts and influencing factors in the development of a decarbonization strategy for an industrial company. More information can be found in the Task 3 report of the IEA HPT Annex 58 (https://heatpumpingtechnologies.org/annex58/task-3/).

Technology Readiness Level, TRL, of various mobile applications of fuel cell systems.

In the aerospace sector, industrial trucks, cars and buses, TRLs of between 7.5 and 9 can be achieved. Light commercial vehicles, two-wheelers and trains achieve a TRL between 6.5 and 7, and aviation and shipping a TRL of 5.5.

Comparison of component manufacturing costs for fuel cells currently and in the future

The cost analysis is based on sales of 100,000 Fuel Cell systems per year. With current technologies, up to $73/kW can be achieved, with future technologies up to $60/kW in 2030. The greatest reduction potential of minus 33% is in the Fuel Cell stack.