Shell-and-Tube Condenser Tubes | TC Series Enhanced Condensing Tubes

Shell-and-tube condenser tubes are specially designed for water-cooled shell-and-tube condensers. High-temperature, high-pressure gaseous refrigerant enters the shell side and condenses on the outside of the tubes, while cooling water flows inside the tubes to remove the latent heat of condensation.

Kenergy's TC series enhanced condensing tubes feature an external fin structure that increases the condensing surface area on the tube outside diameter. The fin tips promote condensate film thinning, effectively reducing the condensing thermal resistance. Compared to smooth tubes, externally finned condenser tubes improve the condensing heat transfer coefficient by 40-60%. They are ideally suited for centrifugal and screw chiller condensers, large industrial heat pumps, and waste heat recovery systems.

Core Advantages

40-60% Improvement in Condensing HTC

External fin structure increases condensing surface area while fin tips promote condensate film thinning, significantly reducing thermal resistance during condensation.

CFD-Optimized TC Series Fin Profile

Fin height, pitch, and geometry are optimized through computational fluid dynamics to balance heat transfer efficiency with manufacturability and cost.

High Temperature & Pressure Rating

Tube material strength and welding processes are designed to meet condensing requirements of high-pressure refrigerants including R410A and R513A.

Anti-Fouling Design

The fin geometry provides a degree of self-cleaning action, extending maintenance intervals and reducing cleaning costs in water-cooled condenser applications.

Technical Parameters

Available outer diameters, fin geometries, and specifications. Custom configurations available upon request.

Outer Diameter (mm)	Wall Thickness (mm)	Fin Height (mm)	Fin Pitch (mm)	Fin Type	Condensing HTC (W/m²·K)	Compatible Refrigerants	Material
19.05	0.80–1.00	0.30–0.60	0.50–0.80	Spiral / Serrated	5,000–9,000	R22 / R134a / R410A / R513A	TP2, T2
25.40	0.90&ndash>1.10	0.40–0.70	0.60–1.00	Spiral / Serrated	5,500–10,000	R22 / R134a / R410A / R513A	TP2, T2, CuNi
31.80	1.00–1.20	0.50–0.80	0.70–1.00	Spiral / Serrated	6,000–11,000	R22 / R134a / R410A / R513A	TP2, T2, CuNi

Typical Applications

Centrifugal & Screw Chiller Condensers

Water-cooled condensers for large centrifugal and screw compressor water chillers in commercial and industrial HVAC.

Large Industrial Heat Pump Condensers

Shell-and-tube condensers for high-capacity industrial heat pumps providing process heating and district heating.

Waste Heat Recovery System Condensers

Condensers for waste heat-to-power and heat recovery systems in industrial plants and power generation facilities.

Marine Cooling System Condensers

Seawater-cooled condensers for marine air conditioning and refrigeration systems on ships and offshore platforms.

Frequently Asked Questions

Q: How much smaller is a finned tube condenser compared to a smooth tube condenser?

Due to the 40-60% improvement in condensing HTC, the required heat transfer surface area can be reduced by approximately 30-40% compared to a smooth tube condenser. This translates directly into a condenser shell that is roughly 30-40% shorter for the same tube count, or a smaller shell diameter with fewer tubes. Typical overall volume reduction is 25-35%. For new projects, this means significant savings in material costs, refrigerant charge, and floor space. For retrofit projects, finned tubes can increase capacity without replacing the existing shell.

Q: Are the TC series fins prone to damage? What should I be careful about during cleaning?

The fins are mechanically roll-formed from the base tube material and have good mechanical strength for normal handling and operation. However, they can be bent by excessive force or improper tooling. During chemical cleaning, use recommended inhibitors and avoid aggressive acid concentrations that could attack the fin base. For mechanical cleaning, we recommend using soft bristle brushes rather than wire brushes. If fins are accidentally damaged, local performance impact is typically minimal, and severely damaged tubes can be replaced individually.

Q: Can TC series tubes be used in ammonia condensing systems?

Yes, TC series externally finned tubes are well suited for ammonia (R717) condensing systems. However, the material selection should be carefully considered. For ammonia systems, we recommend CuNi10Fe1Mn (copper-nickel) alloy rather than pure copper or TP2, as copper-nickel alloys offer better corrosion resistance in ammonia environments. The fin geometry can also be optimized for ammonia's thermophysical properties. Please consult our engineering team with your specific ammonia condensing requirements.

Q: What tube-to-tubesheet connection methods are used for condenser tubes?

The most common connection method for condenser tubes is mechanical tube expansion (rolling), where the tube end is mechanically expanded into the tubesheet to create a leak-tight joint. For high-pressure applications, we recommend welded joints or a combination of expansion plus seal welding. Explosion-bonded tubesheet cladding with tube expansion is also available for severe service conditions. The fin structure does not affect the tube end connection, as the finned section stops short of the tube ends, leaving a smooth plain section for tubesheet insertion.

Shell-and-Tube Condenser Tubes — TC Series Enhanced Condensing Tubes