Until now, the only ultra-low temperature (ULT) freezer options you might have thought were available have been powered by decades-old compressor technology. Perhaps you’ve come to accept that compressor-related issues complicate and even threaten the preservation of your life’s work!
That is why we invented the first and only line of compressor-free, ultra-low temperature freezers. With the uncomplicated, free-piston Stirling engine, our proven freezer models advance solutions in every aspect of ULT technology…
Free-Piston Stirling Engine
BETTER TEMPERATURE RANGE AND STABILITY
- Wider temperature range between -20°C to -86°C
- Electronically modulates to control steady-state operating temperatures within +/-1°C of setpoint, while continuously adapting to changing conditions
MORE STORAGE IN A SMALLER, LESS BURDENSOME FACILITY FOOTPRINT
- Compact cooling system design frees more storage volume per footprint, allowing higher storage capacity in the same space and the industry’s only portable ULT freezer
- Runs variable voltages from 100V to 240V, plugs into any outlet worldwide by simply changing the power cord and is brown-out tolerant
- Top-mount engine design expels less heat at the top for better airflow, significantly reducing the need for special ventilation and HVAC
LESS LIFETIME MAINTENANCE
- Far fewer moving parts that are driven by linear non-contact motion, without wear
- Sealed system floats a piston on frictionless gas bearings without the need for oil and associated maintenance
- Compressor-free ULT freezers need minimal periodic maintenance over their effective operating lifetimes
IMPROVED EFFICIENCY AND SUSTAINABILITY
- Inherent efficiency reduces operating and infrastructure energy consumption up to 70% compared to standard compressor-based ULT freezers
- Uses 100% natural refrigerants with significantly lower Global Warming Potential than F-gas refrigerants used in many other ULTs
LOWER TOTAL COST OF OWNERSHIP
- Low energy use and infrastructure cost, combine with minimal maintenance, reduced floor space and longer operating life, to dramatically cut total operating cost
LEARN
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Request info about Stirling Ultracold’s portable ULT25NEU, undercounter SU105UE or upright SU780XLE compressor-free ULT models and download the article “Five Things to Consider About Your Next ULT Freezer”…
Innovation for over 200 years
