Our Dry Expansion (DX) Shell and Tube Evaporators are engineered for superior heat transfer in industrial refrigeration and chiller systems. Featuring a straight-through tube bundle, this design ensures high refrigerant velocity for optimal oil return and simplified maintenance.
Why Choose Our DX Shell and Tube Evaporators?
In the demanding field of industrial refrigeration, reliability and efficiency are paramount. Our shell and tube heat exchangers are built to handle rigorous duty cycles while maintaining consistent cooling performance.
1. Superior Thermal Efficiency
By utilizing high-performance internally enhanced copper tubes, our evaporators maximize the heat transfer surface area. This allows for a more compact footprint while delivering cooling capacities ranging from 30kW up to 3200kW, suitable for both light commercial and heavy industrial applications.
2. Optimized Oil Return
One of the biggest challenges in DX (Dry Expansion) systems is ensuring oil returns to the compressor. Our straight-tube design maintains a high refrigerant velocity, effectively preventing oil trapping—a common issue in alternative designs. This extends the lifespan of your compressor and reduces system downtime.
3. Versatile Material Options for Corrosive Environments
While standard units feature high-grade copper tubes, we specialize in customized material sets. For seawater cooling or chemical processing, we provide Titanium, Nickel-Copper (Cu-Ni), or Stainless Steel (304/316L) tube bundles to ensure maximum corrosion resistance and longevity.
Technical Specifications
- Cooling Capacity Range: 30kW to 3200kW
- Compatible Refrigerants: Optimized for R22, R407C, R404A, R134a, and newer low-GWP blends.
- Working Mediums: Suitable for fresh water, seawater, ethylene glycol, and brine solutions.
- Pressure Ratings: Designed and tested to withstand high-pressure industrial cycles, ensuring zero leakage.
- Certifications: Fully compliant with PED (CE), DOSH, and CCS standards for international markets.
Wide Range of Industrial Applications
Our shell and tube evaporators are versatile components used across various sectors:
- Industrial Chillers: Providing chilled water for plastic injection molding, laser cutting, and pharmaceutical processing.
- HVAC Systems: Centralized cooling for large-scale commercial buildings and data centers.
- Marine & Offshore: Seawater-cooled condensers and evaporators for shipboard refrigeration.
- Food & Beverage: Precise temperature control for brewing wort cooling and dairy processing (Stainless steel options recommended).
Maintenance and Serviceability
The straight-tube design is a favorite among service engineers for its ease of maintenance. Unlike brazed plate exchangers which must be chemically cleaned or replaced when fouled, our DX shell and tube units feature removable headers.
This allows for mechanical tube cleaning—the most effective way to remove hard water scaling and mineral deposits. Regular maintenance ensures the approach temperature remains low and the system COP (Coefficient of Performance) remains high throughout the equipment’s life.
Frequently Asked Questions
Q: Can this evaporator be used in seawater applications?
A: Yes, we offer customized versions with specialized materials (such as Titanium or Cu-Ni tubes) specifically for seawater and corrosive brine environments. These units are built to withstand the harshest maritime conditions.
Q: What certifications are available for the European market?
A: Our products are available with PED (CE) certification, as well as DOSH and CCS, ensuring compliance with international pressure vessel standards and safety regulations.
Q: Is the unit compatible with eco-friendly refrigerants?
A: Absolutely. While optimized for R404A and R134a, our thermal designs are compatible with many newer, low-GWP (Global Warming Potential) refrigerants. Contact our technical team for a custom performance simulation.
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