Shell-and-tube condenser tubes are specifically 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 condenser tubes feature an external fin structure that increases the condensation surface area on the outer diameter of the tubes. The fin tips promote a thinner condensate film, effectively reducing condensation thermal resistance. Compared to smooth tubes, externally finned condenser tubes improve the condensation heat transfer coefficient by 40-60%. They are ideal for centrifugal and screw chiller condensers, large industrial heat pumps, and waste heat recovery systems.

Heat exchange tubes for shell-and-tube condensers

Core Advantages

Concentrated HTC increased by 40-60%

The external fin structure increases the condensation surface area, while the fin tips promote condensation film thinning, significantly reducing thermal resistance during condensation.

CFD-optimized TC series fin profile

The fin height, spacing, and geometry are optimized through computational fluid dynamics to balance heat transfer efficiency with manufacturability and cost.

High temperature and pressure rating

The tube strength and welding process are designed to meet the condensation requirements of high-pressure refrigerants including R410A and R513A.

Anti-fouling design

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

Technical Parameters

Outer Diameter (mm)	Bottom Wall (mm)	Tooth Height (mm)	Number of Teeth	Helix Angle (°)	Weight (g/m)	Heat Transfer Area (m²/m)	Material
7.00	0.25-0.32	0.12-0.18	45-55	15-25	42-50	0.021-0.024	TP2, T2
9.52	0.30-0.40	0.14-0.20	50-65	18-28	52-62	0.025-0.028	TP2, T2
7.94	0.27–0.35	0.12–0.18	45-60	18>28	63–75	0.028–0.032	TP2, T2

Typical Applications

Condenser for Centrifugal and Screw Chillers

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

Large Industrial Heat Pump Condenser

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

Waste Heat Recovery System Condenser

Condenser for waste heat power generation and heat recovery systems in industrial plants and power generation facilities.

Marine Cooling System Condenser

Seawater-cooled condenser 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?

Since the condensation HTC is improved by 40-60%, the required heat transfer surface area can be reduced by about 30-40% compared to a smooth tube condenser. This directly translates to a condenser shell that is approximately 30-40% shorter for the same number of tubes, or a smaller shell diameter with fewer tubes. The typical overall volume reduction is 25-35%. For new projects, this means significant savings in material costs, refrigerant charges, and footprint. For retrofit projects, finned tubes can increase capacity without replacing the existing shell.

Q: Are TC series fins easily damaged? What should I pay attention to when cleaning?

The fins are mechanically rolled from the base tube material, providing good mechanical strength suitable for normal operation and handling. However, they can be bent by excessive force or improper tools. During chemical cleaning, use recommended inhibitors and avoid acid concentrations that may attack the fin base. For mechanical cleaning, we recommend using a soft brush instead of a wire brush. If fins are accidentally damaged, the local performance impact is usually minimal, and severely damaged tubes can be replaced individually.

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

Yes, TC series externally finned tubes are well suited for ammonia (R717) condensing systems. However, material selection should be carefully considered. For ammonia systems, we recommend CuNi10Fe1Mn (copper-nickel) alloy instead of pure copper or TP2, as copper-nickel alloy offers better corrosion resistance in ammonia environments. The fin geometry can also be optimized for the thermophysical properties of ammonia. 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 form a tight sealed 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 suitable for severe service conditions. The fin structure does not affect the tube end connection, as the finned section stops before the tube end, leaving a smooth plain section for tubesheet insertion.

Heat exchange tubes for shell-and-tube condensers