Ready when you are...!

In search of the right form of energy for our future projects.

Ready when you are...!

We have something new in mind again. Our current roasting process is powered by natural gas. That's why we found ourselves at the end of April facing... Probat Headquarters are back in Emmerich am Rhein.

Probat is the manufacturer of our roasting machine. We recently had the opportunity to get a glimpse of the future at Probat's test site. We brought our own green coffee beans from Salzburg and were able to roast them according to our profiles on both an electric roaster and a hydrogen-powered roaster. We were prepared for some differences compared to roasting with natural gas.

The conclusion: due to the type of control system and the process flow, we probably wouldn't have noticed that we were working on an electric or hydrogen roaster. That's certainly good news; there's no need to reinvent the wheel. The roasted coffee beans look and smell no different than those from a natural gas-powered process. According to the manufacturer, Probat, no difference can be detected in terms of sensor performance. We will be investigating this point further. All in all, converting roasting machines to electric heating or hydrogen combustion is a manageable task if you have the time for planning and implementation. Electric heating cannot be practically scaled up to very large roasting machines, as these machines, with their maximum kW output, would place immense demands on the power grid.

This is where hydrogen combustion comes into play. The conversion of the roaster, or more precisely, the burner system, is essentially settled from the current perspective. The decision of whether to use electricity, hydrogen, or both on two different machines depends on our anticipated future capacity requirements and the local energy supply in Salzburg. Here in Emmerich am Rhein, near the Dutch border, hydrogen is a fixed energy source for commerce and industry. Here, we draw on the immense electricity capacity of the offshore wind farms in the North Sea. With the frequent electricity surpluses from these wind farms, the electrolysis of water to hydrogen as an energy storage medium or fuel is a sensible option. How we in southern Salzburg will proceed with energy will hopefully become clearer in the near future. Technological leaps are becoming more significant. Things are happening.

What now appears to be a slow and sluggish energy transformation will sooner rather than later accelerate into a gallop. It is crucial to involve everyone, to moderate and inform, so that everyone has the necessary time to plan and implement the solutions economically and effectively – ideally in a technology-neutral and open-minded manner. After this visit to Probat, we are rather optimistic about the developments; the plans are taking shape. Or, as Probat has advertised at its hydrogen test site: "Ready when you are…".

 

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"Ready when you are...!" | In search of the right energy source for our future projects