How to Select an Industrial Chiller for Pipe Extrusion Lines

In plastic pipe manufacturing, temperature control plays a crucial role in ensuring product quality and production efficiency. Industrial chillers are essential auxiliary equipment widely used in pipe extrusion lines to provide stable and continuous cooling.

 Applications of Industrial Chillers in Pipe Extrusion

Industrial chillers are mainly used in the following parts of the extrusion process:

• Vacuum calibration tank cooling (primary application)
• Extrusion mold cooling (mold temperature control)
• Hydraulic and auxiliary system cooling (optional)

Among these, vacuum tank cooling requires the largest cooling capacity and directly affects pipe dimensional stability and surface quality.

Key Factors for Chiller Selection

To select the right chiller, the following parameters should be considered:

• Pipe material (PVC, PE, PPR, etc.)
• Pipe diameter range
• Production capacity (kg/h)
• Required cooling water temperature
• Water tank volume and circulation flow rate

A proper evaluation of these factors ensures optimal cooling performance and energy efficiency.

General Selection Guidelines

Based on industry experience, the recommended chiller capacities are:

• Small pipes (20–63 mm): 5–10 HP
• Medium pipes (75–160 mm): 10–25 HP
• Large pipes (above 200 mm): 30–60 HP or higher

For example, a 40HP air-cooled chiller is commonly used in medium to large pipe extrusion lines, providing reliable and efficient cooling performance.

Air-Cooled vs Water-Cooled Chillers

Air-Cooled Chillers:

• Easy installation, no cooling tower required
• Lower maintenance cost
• Ideal for most standard industrial applications

Water-Cooled Chillers:

• Higher energy efficiency
• Suitable for large-scale industrial systems
• Requires cooling tower and additional infrastructure

System Optimization Recommendations

To improve system stability and performance, the following configurations are recommended:

• Stainless steel water tank
• Automatic temperature control system
• Integrated water circulation pump

These features help ensure consistent cooling performance and long-term reliability.

Conclusion

Selecting the right industrial chiller is essential for maintaining stable pipe quality, improving production efficiency, and reducing operational costs. A well-designed cooling system can significantly enhance the overall performance of pipe extrusion lines.