APM AUTO PARTS PRIVATE LIMITED
Applications
Brazed Aluminium Heat Exchangers
Modern-day technology for Market-leading applications
Higher Heat Transfer Rate - the mechanical bond between conventional expanded tube and fin has significant contact resistance that reduces air-side heat transfer. This contact resistance is due to oxides present in the interface between the tube OD and fin collar. This problem is more severe in copper tube heat exchangers since the aluminium fins coupled to the copper tube provide sacrificial corrosion protection for the tubes.
Brazed Aluminium Heat Exchangers have 100% metallurgical bond between tube and fin due to Controlled Atmosphere Brazing technique and highest heat transfer rate, due to the elimination of the contact resistance between tube and fin.
Why Choose Aluminium Heat Exchangers?
Durability - the primary durability problem with mechanically expanded Copper/ Aluminium tube-fin heat exchanger is corrosion, that results in the growth of oxides and other corrosion products at the fin-tube interface. Formic acid is one of the byproducts of this oxidation process that corrodes the copper and drills tiny pin holes. This acid penetrates the thinner, high-efficiency tubing faster and results in refrigerant leaks, thereby reducing durability.
Brazed Aluminium Heat Exchangers are 100% Aluminium products with no or very less chance for formic acid attacks and corrosion related failures in field.
Cost - Brazed Aluminium Heat Exchangers have a great cost advantage over traditional expanded tube heat exchangers. As shown in the table above (Courtesy: Sapa Group - HVAC White Paper), the direct material cost saving on various items associated with the heat exchanger system is significant compared to expanded tube heat exchangers. This added value is directly realised by the OEMs (our customers), thus creating a sustainable WIN-WIN situation.