News Details
Microchannel Heat Exchangers
20 August 2014

Microchannel coils have been used in the automotive industry for more than 20 years, but the technology has been applied to the HVAC&R industry only in recent years. Microchannel condenser coils use an all-aluminium brazed fin construction. The coil is composed of three components: the flat microchannel tube, the fins located between the microchannel tubes, and two refrigerant manifolds. Product quality and integrity can be maximized since only one braze is required compared to 200 or 300 manually brazed connections with traditional copper/aluminium (Cu/AI) coils. According to Luvata, a heat transfer coil manufacturer, microchannel coils have the following features: 

  • Higher efficiency than conventional coils 
  • Less required refrigerant charge, thus contributing to cost reductions (lower amount of refrigerant because of the small inner volume of the coil tubes) 
  • Easier to recycle since only one type of metal (aluminium) is used 
  • Corrode more slowly than two-metal (Cu/AI) coils

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