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See the KAL, KWL & KWSL Series
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Lohabour Low Temperature Chillers are designed for industrial applications requiring coolant temperatures below the operating range of conventional chillers. Available in air-cooled (KAL) and water-cooled (KWL, KWSL) configurations, they deliver stable cooling performance from +10°C down to -30°C while maintaining high reliability, energy efficiency and precise temperature control.
Standard industrial chillers are typically designed for chilled water temperatures above 5°C. When industrial processes require lower temperatures, a specially engineered refrigeration system becomes essential.
The Lohabour Low Temperature Series incorporates optimized compressors, specially selected refrigerants, intelligent control systems and enhanced safety protection to provide dependable cooling under sub-zero operating conditions — from the compact, air-cooled KAL Series through the coil-in-tank KWL Series to the heavy-duty, single or dual screw KWSL Series for large centralized loads.
Reliable low temperature cooling performance from +10°C down to -30°C for standard, low and deep low temperature applications.
Multiple system designs available for different cooling requirements:
Advanced microprocessor controllers continuously monitor system conditions and optimize refrigeration performance for stable outlet temperatures.
Built with high-quality refrigeration components including:
Flexible refrigerant selection for different applications and operating requirements:
Advanced protection systems ensure safe and reliable operation during demanding low-temperature applications.
Three engineered platforms covering sub-zero process cooling from simple air-cooled installations to heavy-duty central water-cooled screw systems.
Best Suited For
Best Suited For
Best Suited For
| Feature | KAL Air-Cooled | KWL / KWSL Water-Cooled |
|---|---|---|
| Installation | Simple | Requires cooling tower |
| Initial Cost | Lower | Higher |
| Operating Efficiency | High | Very High |
| Large Capacity | Good (up to ~94 kW) | Excellent (up to ~1,020 kW) |
| Maintenance | Easier | Professional maintenance |
| Outdoor Installation | Yes | Usually indoors |
| Continuous Operation | Excellent | Excellent |
Within the water-cooled family, the compact KWL Series (up to ~110 kW) suits smaller coil-in-tank loads, while the single or dual screw KWSL Series scales up to centralized, plant-wide cooling duties beyond 1,000 kW.
Specially designed refrigeration circuits maintain stable cooling performance from +10°C down to -30°C, ensuring precise process temperature control.
Optimized evaporators and condensers maximize heat transfer efficiency while minimizing energy consumption, even during continuous low-temperature operation.
Microprocessor-based control continuously monitors operating conditions and automatically adjusts refrigeration performance for stable outlet temperatures.
Built using premium compressors, expansion valves, electrical components and refrigeration accessories for reliable 24/7 industrial service.
Available with a range of refrigerants to suit different applications and environmental requirements:
Every unit includes multiple built-in safety functions including:
Selecting the correct model depends on both the required cooling capacity and the desired outlet temperature. As the chilled water temperature decreases, the available cooling capacity of the refrigeration system also decreases — this is a normal characteristic of vapor compression refrigeration systems.
| Required Water Temperature | Recommended Selection |
|---|---|
| +10°C to 0°C | Standard Low Temperature Configuration |
| 0°C to -10°C | Low Temperature Series |
| -10°C to -20°C | Enhanced Low Temperature Configuration |
| -20°C to -30°C | Deep Low Temperature Configuration |
Always base the required cooling capacity on the actual operating temperature.
| Required Temperature | Use Capacity Column |
|---|---|
| -5°C | Cooling Capacity (-5°C) |
| -10°C | Cooling Capacity (-10°C) |
| -15°C | Cooling Capacity (-15°C) |
| -20°C | Cooling Capacity (-20°C) |
| -30°C | Cooling Capacity (-30°C) |
If your process requires a cooling load of 18 kW at an outlet water temperature of -20°C, select the model using the -20°C cooling capacity column, not the -5°C column — for example the KAL-10D/KAL-10 delivers 7.4 kW at -20°C, while the KAL-12D/KAL-12 delivers 9.2 kW at -20°C. This ensures the chiller can deliver sufficient cooling under actual operating conditions.
Alternative refrigerant option for specific low temperature applications.
Available for applications with different environmental or performance requirements.
Suitable for regions with specific regulatory or performance considerations.
Built for corrosive applications and demanding fluid chemistries.
Higher head pressure for long-distance circulation across large facilities.
Compact and efficient heat transfer for space-constrained installations.
Advanced automation and intuitive operator control.
Optional communication modules for remote diagnostics and monitoring.
Integration with plant-wide SCADA and building management systems.
Engineered for hazardous-area installations where required.
Weatherproofing and protection for exposed site conditions.
Ethylene glycol or brine circulation to prevent freezing at sub-zero temperatures.
Low temperature chillers are specifically designed to provide reliable cooling below 0°C, where conventional industrial chillers cannot operate efficiently.
Ethylene glycol or brine solutions are recommended to prevent freezing while maintaining efficient heat transfer.
The KAL Series uses ambient air to reject heat, making installation simple without requiring a cooling tower. The KWL Series uses cooling water for compact loads up to around 110 kW, while the single or dual screw KWSL Series scales up to over 1,000 kW for large, continuous industrial applications.
Yes. Systems can be configured for specific operating temperature ranges, refrigerants, electrical supplies and industrial process requirements.
The most suitable refrigerant depends on the required operating temperature, environmental regulations and application requirements. Our engineering team can recommend the appropriate option.
Our engineers can recommend the most suitable KAL, KWL or KWSL model based on your required operating temperature, cooling capacity, process fluid, installation environment and available utilities — whether your application requires -5°C, -20°C, or -30°C.