Enhanced Heat Exchanger

High condensing tube heat exchanger

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Technical Principles

High Condensing tube heat exchanger uses high-efficiency heat exchange tubes with special fin structure to accelerate the shedding of condensate and enhance condensation heat transfer.

In a condenser, vapor releases latent heat as it approaches saturation temperature and begins to condense, forming a thin liquid film that gradually thickens on the tube surface. The growth of this film increases thermal resistance and limits heat transfer performance.

Conventional low-fin tubes mainly enhance performance by increasing external surface area, delivering higher heat transfer coefficients than plain tubes.

Our high-efficiency condensing tubes feature a staggered serrated fin geometry that actively disrupts condensate flow, promoting convective heat transfer within the liquid film. This unique three-dimensional structure also breaks surface tension, maintains a thinner condensate film, and rapidly channels condensate from the fin tips to circumferential fin roots, where it is quickly drained through microchannels under gravity.

The result is faster condensate removal, lower thermal resistance, and significantly improved condensation efficiency.

Performance advantage

Uniform thickness under the fin effectively reduces residual stress generated during processing and ensures long-term safe and stable operation of equipment.
Guide groove structure is arranged at the fin tip, which can effectively break the condensate film and make condensate flow down in columnar form, reducing heat transfer thermal resistance. With the increased comprehensive heat transfer area, the condensation heat transfer coefficient can reach 7 to 10 times that of plain tubes.
Smooth transition at the fin root improves mechanical performance.

Typical Applications

Technical Performance – Condensation Enhancement Comparison

Condensation mode
Heat transfer efficiency
Fin ratio
picture
High-efficiency
condensing tube
Columnar flow
Significantly improved
2.6-3.3
Low fin tube
Film flow
Not improved
Around 2.0

Case Data

Equipment Tag/Name
LMTD, ℃
Tube Type
Dimensions, mm
Total Area, m²
Qty. (Units)
Qty. (Units)
Propylene Distillation Tower Condenser of a Certain Plant
13
High-efficiency
condensing tube
DN2400×6000
9736
4
Plain tube
DN3000×8000
21468
4