A key milestone for ZIMBA!

04.05.2026

We have reached an important step with the design and fabrication of two high-performance ejectors for our ammonia–water heat pump prototype.

These ejectors act like jet-pumps – using high-pressure vapour to pull in low-pressure vapour – and will boost our system’s efficiency and flexibility (especially at higher ambient temperatures).

Take a look at the attached visual to better understand how this innovation works and why it matters for delivering low-carbon heat to industry.

A big thank you to all partners involved in this achievement. The next step will focus on experimental testing and integration of the optimal design into the ZIMBA prototype.