Two-stage refrigeration systems that pair refrigerants for reliable, efficient ultra-low temperature performance.
A single refrigerant can't reach ultra-low temperatures efficiently. A cascade system uses two circuits: a high stage that cools the condenser of a low stage, each running a refrigerant chosen for its own temperature band.
We design cascade packages for ULT cold rooms, freezers, test chambers and process chillers, selecting compressors, cascade heat exchangers and refrigerant pairs for your duty, and building in protections for safe start-up and shutdown.
Low-stage circuits engineered for deep, stable evaporating temperatures.
Each stage runs the refrigerant best suited to its band.
Staged start, expansion vessels and pressure protections.
Better COP than single-stage at ultra-low set points.
Both stages managed from one controller with fault history.
Accessible components and isolation valves on every stage.
| Evaporating range | −40 °C to −86 °C |
|---|---|
| Stages | Two-stage cascade |
| Cascade HX | Brazed plate / shell-and-tube |
| Compressors | Semi-hermetic / scroll |
| Controls | PLC with stage sequencing |
| Applications | Rooms, freezers, chambers, chillers |
Every system is custom-engineered. Final capacities and specifications are confirmed in our proposal for your project.
Generally when the required evaporating temperature is below about −40 °C, where single-stage systems lose efficiency and reliability.
In many cases yes. We assess your current equipment and recommend a retrofit or a new package.
We select refrigerants that meet current regulations and suit each stage's temperature band, and explain the choice in our proposal.
Validated freezer systems for vaccines, biologics and pharmaceutical storage with continuous data logging.
GMP-compliant cold rooms for pharmaceutical storage, stability studies and cold chain compliance.
Walk-in storage rooms that hold set points down to −80 °C with tight uniformity, for vaccines, biologics and biobank samples.
Tell our engineers about your process, from a single machine to a full production line. We reply with a spec and a quote, usually within a working day.
