Our coaxial tube heat exchangers feature a spiral-wound copper or stainless-steel inner tube housed in a robust outer shell. This design ensures highly efficient heat transfer, minimal fouling, and excellent corrosion resistance. They are widely applied in air conditioning units, water chillers, and heat pump systems where stable performance and space-saving installation are required.
The advanced design allows for smooth refrigerant flow, low noise, and reduced energy consumption, making them an excellent choice for both residential and commercial HVAC/R applications.
Key Features:
• Compact design with easy installation and low footprint
• High heat transfer efficiency with low refrigerant charge
• Low pressure drop for stable system operation
• Copper, stainless steel, or coated steel options available
• Anti-fouling and anti-corrosion construction for long service life
• Quiet operation with energy-saving performance
• Available in customized dimensions and capacities
Applications:
• Residential & commercial air conditioners
• Heat pump water heaters
• Chillers and refrigeration units
• Industrial cooling and heating systems
• Renewable energy systems (geothermal & solar heat pumps)
Specifications (Typical Range):
• Heat transfer capacity: 1 kW – 200 kW (customizable)
• Applicable refrigerants: R22, R134a, R407C, R410A, R32, R290, R404A, etc.
• Working pressure: up to 4.5 MPa
• Materials: Copper tube / Stainless steel 304/316 / Epoxy-coated steel
• Connection type: Copper pipe ends / threaded or welded connections
• Orientation: Horizontal or vertical installation
• Customizable dimensions and coil sizes available
| Model | Inner Tube Material | Outer Tube Material | Heat Exchange Capacity (kW) | Length (mm) | OD (mm) | Notes |
|---|---|---|---|---|---|---|
| KAK-K-1.5 | Copper | Copper | 1.5 | 300 | Φ90 | Compact unit, small chillers |
| KAK-K-3 | Copper | Copper | 3.0 | 450 | Φ100 | Standard A/C units |
| KAK-K-5 | Copper | Copper | 5.0 | 600 | Φ120 | Widely used in heat pumps |
| KAK-K-8 | Copper | Copper | 8.0 | 750 | Φ133 | Medium chillers |
| KAK-K-12 | Copper | Copper | 12.0 | 1000 | Φ159 | Large A/C or water chillers |
| KAK-KS-5 | Stainless Steel | Copper | 5.0 | 600 | Φ120 | For corrosive environments |
| KAK-KS-12 | Stainless Steel | Stainless Steel | 12.0 | 1000 | Φ159 | Industrial-grade |
FAQ:
A1: R22, R134a, R407C, R410A, R32, R290, R404A, and more.
A2: Yes, tube material, coil size, capacity range, and connection type can all be customized.
A3: With proper installation and maintenance, over 10–15 years depending on operating conditions.
A4: Yes, stainless steel 316 versions are available for high-corrosion environments.
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