fins: shapes & applications

Fin Type Characteristics Common Uses
Louvered Louvered fins Louvered fins increase the heat-transfer capacity by creating air turbulence which reduces the boundary layer on the fin's surface, but at a cost of increased air-pressure drop across the coil.
  • -Evaporators
  • Heaters and Coolers
  • Condensers operating in areas with light to normal dust conditions
  • This fin shape is for all applications with normal dust conditions
Corrugated (low and high) Corrugated fins Corrugated fins improve the heat transfer factor to a lower degree than louvered fins. They also have a lower resistance to air flow.
  • Used where icing or heavy-dust conditions are expected, like condensers for off road vehicles and for heavy dust application
Sine Wave Sine wave fins Sine wave fins improve the heat transfer factor to a higher degree than corrugated fins. These have about the same resistance to air flow as the corrugated fins.
  • Good all purpose selection for all types of coils, provides the best output to air pressure drop ratio
  • Default fin shape when not otherwise specified
Flat Flat fins Flat fins reduce ice accumulation on fins. They have the lowest resistance to air flow.
  • Deep freezers
  • Cooling / freezing systems
  • Passive air flow systems

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