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).

Illustration of the "Roadmap on Digitalization" that was developed in the Annex.

The roadmap shows the keywords with regard to future application areas of digital twins, which were identified during workshops in the Annex.

Membrane distillation plant @ AEE INTEC

The membrane distillation plant in the laboratory of AEE INTEC in Gleisdorf offers the possibility to test different types and sizes of membrane modules under varying conditions.

Membrane tests for the analysis of surface properties

By means of contact angle measurements, the membrane can be analyzed before and after its application and conclusions can be drawn about its functionality and usability.

sandTES

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

supercritical CO2 cycle

supercritical CO2 cycle for electrification of waste heat at 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: System boundaries

Overview of the various system boundaries as considered in IEA DHC Annex TS8.

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: 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.

Overview transformation plan

Overview transformation plan

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

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

Economic effects of low system temperatures

Overview of the projected economic impact, according to the cost reduction gradient (CRG) in €/(MWh·°C), of reduced system temperatures

Innsbruck Campagne

Photo of the district Innsbruck Campagne

HP Inegration

Integration options of heat pumps in districts

BI-Generation

Hydraulic integration of the heat pump for BI-Generation

BI-Generation Monitoring Results

Monitoring Data of the Operation of the heat pump

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/).

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/).