Simulation model for the calculation of hydrogen refuelling stations and systems

What is HRS-Modell?

HRS-Modell is a simulation model developed to calculate the thermodynamic effects within hydrogen refuelling stations during operation. It is suitable for simulating almost all types of hydrogen systems. The model has been developed as part of the “HRS-Modell” project funded by the IGF.

What can the model be used for?

Scope

  • Filling of tanks
  • Defuelling of tanks
  • Booster-filling / Direct compression
  • Back-to-back refuellings
  • Parallel refuellings
  • Modelling of operation strategies
  • Single events
  • Operation cycles
  • Trailer-Swap

Applications

  • Iterative system and operation design of hydrogen stations and systems
  • Time-resolved visualisation of dynamic processes at every point in the system
  • Analysis of operation strategies for existing and planned systems

As for the future, your task is not to foresee it, but to enable it.”

Antoine de Saint-Exupery

From theory to practice

Our aim is to contribute to the theoretical and practical understanding of hydrogen refuelling stations and systems, and thus to an economic and ecological operation. To this end, we work directly with institutes and companies in workshops and projects. Both theory and practice iteratively influence the development.


The results of the calculation can be tracked live during the simulation. The output and the analysed data can be customized.


No special simulation computer is required. The HRS-Modell has been developed in such a way that short computation times can be achieved even on standard computers.


The simulation tool is continuously being developed within the framework of research and industrial projects by the Chair of Energy Technology and the ZBT, as well as with industrial partners.

Our service

You want to use HRS-Modell, have questions, comments or a general interest? We offer you to work directly with us to find solutions that are best suited for your application and to benefit from the full potential of the model.
Your options to work with us are:

As a member of the HRS-Modell project committee, you will receive information and updates at biannual committee meetings and can actively participate in the development of the model. There is no charge to join the committee, though the meetings are held in German.

Would you like to get to know the functions of the model better so that you can calculate your own applications in a flexible way or examine the possibility of a closer cooperation? In a joint workshop we give you an understanding of the capabilites and the theory behind it.

Do you have systems or applications that you would like to simulate and design? We can help you by modelling your system and simulating different operational scenarios. We provide iterative support for both design and operation

Would you like to deep dive and work with us on a larger scale? We work with a wide range of companies, from local to international, on joint research or industrial projects. Please contact us.

Updates and Revisions

An outlook

Our goal is to continuously develop HRS-Modell further and to include current developments demands. This covers technological developments such as from the field of protocol development as well as imminent issues like water content in the hydrogen.

The current version of the model requires a MatLAB licence including the necessary toolboxes. We plan to change this. To make HRS-Modell accessible to a wider range of users, we are planning to switch to other platform, offer a direct executable and are looking at other options as well.
Do you have any ideas or suggestions? Please do not hesitate to contact us.

In the released free beta version (release 0.1.0), a constant pressure ramp rate can be specified and adjusted as required. We are currently working on making other types of fill and empty control logics as well as other control strategies (protocols) available to everyone with one of the next patches.

We plan to extend the model to assess not only energy efficiency, but also the economic efficiency of a system’s design and operation. Initial preparations for this have already been made. However, at this stage we cannot give an exact date for when this functionality will be integrated into the tool.

One of the most imminent issues in the operation of hydrogen refuelling stations and systems is the contamination of hydrogen with water. Practical experience shows that standardised limits for water in hydrogen are often exceeded. In order to better describe the occurrence and behaviour of water and to derive operational strategies and information for plant operators and component manufacturers, we are extending the model to include the ability to simulate water content.

As a follow-up project to “HRS-Modell” (project no. 21801 N), we have applied for “HRS-Modell II” project. Wihthin the scope of this project we want to focus more on water content and optimisation of plant design and operation. Our project application has been approved by the responsible expert panel and we are currently awaiting final approval.
Interested in this project? You have the opportunity to join the project committee. Learn more.

You want to learn more about HRS-Modell or want to work with us?

For more information contact us directly thorugh the contact form below.

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