New process, new technology, new pumps

Louise Smyth

Around two years ago, Egger was asked by Azelio to develop a pumping solution that would allow it to transport difficult fluids at 600°C.

Azelio is a Swedish company specialised in thermal energy storage, that has developed a unique pump system for heat transfer in an energy storage system, producing cost-effective sustainable electricity on demand around the clock.

The key to the system’s effectiveness is the ability to pump liquid sodium at a high temperature (600°C), which is why Azelio collaborated with Egger to find an efficient solution.

Egger developed a pumping solution that meets Azelio’s stringent power and performance requirements. In practice, the system drives heat through two pumps: one that heats the thermal storage unit, and another one transferring heat from the storage unit to the Stirling engine (motor converting thermal energy into electrical energy).

The pump system has been tested and works well in a controlled environment. The system is currently being checked by the operators running a long-time test during a total of 4,000 hours in real-life conditions.

This collaboration is highly positive. Egger is proud of being able to offer its expertise and contribute to creating a unique and innovative system, helping more people having access to a reliable and effective power supply.

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