Secondary Cooling Systems
Indirect cooling systems, or secondary refrigeration, separate cold generation from the actual cooling process. A heat transfer fluid carries the cold from the primary circuit to the products, operating between -40 °C and 40 °C. This fluid is vital for both cold transfer and corrosion protection. In contrast, direct cooling systems involve the refrigerant directly cooling the target without an intermediary fluid.
In indirect refrigeration systems, heat transfer fluids serve two primary functions. Firstly, they transfer cold, requiring them to remain fluid and ideally maintain a low viscosity across all operating temperatures. Secondly, these fluids are crucial for corrosion protection. Unlike other applications, low-temperature corrosion necessitates a specific blend of inhibitors and a unique protection mechanism. Our products are engineered to provide optimal protection under all system conditions.
Benefits of indirect refrigerant systems:
- Minimal refrigerant use: They require less primary refrigerant, significantly lowering the risk of leaks.
- Reduced system demands: This design leads to a smaller overall system and places less stress on piping and pumps.
- Simplified maintenance: Fewer legally mandated maintenance checks are required for the smaller primary cooling circuits.
- Enhanced flexibility: Their simpler modification makes them highly attractive for adaptable production processes.
- No long-distance refrigerant transport: The secondary fluid can be cooled remotely, avoiding the need to transport refrigerant over long distances.
Examples of application areas:
- Indirect systems in supermarkets:
Supermarkets utilize indirect refrigeration for safe and efficient cooling of displays. All cooling is generated in a separate machine room, ensuring flexibility and reducing public exposure to refrigerants. A heat recovery system in the same room can also provide heating, allowing the use of refrigerants like ammonia in the primary system without public risk.
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Medical Devices and Pharmaceutical Processing
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Power Generation and Industrial Utilities
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Polymer Manufacture
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Food and Beverage Production
