The performance and service life of a fin coil depend heavily on the tube and fin material combination. Common choices include copper tube with copper fins, copper tube with aluminium fins, stainless steel tube with stainless steel fins, and stainless steel tube with aluminium fins.
Common combinations
- Copper tube + copper fin: high heat transfer and good corrosion resistance, suited to demanding duty
- Copper tube + aluminium fin: a cost-effective balance between performance and price
- Stainless steel tube + stainless steel fin: strong corrosion resistance for aggressive or hygienic environments
- Stainless steel tube + aluminium fin: a flexible compromise between corrosion life and cost
How to choose
Start with the cooling medium, operating temperature, moisture and corrosion conditions. Check galvanic compatibility at the tube-to-fin contact and protect the joint where copper and aluminium are combined. Cleanroom and pharmaceutical duty may require stainless steel because no particles may be shed.
Manufacturing details
Fin geometry, tube arrangement and brazing quality also affect performance. A well-designed coil uses consistent fin spacing, good tube-to-fin contact and a leak-tight circuit.
Mazelu builds fin coils in copper, aluminium and stainless steel. Send the air duty and corrosion conditions for a material recommendation.