fins: shapes & applications

Fin Type	Characteristics	Common Uses
Louvered	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 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 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 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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