Microchannel: The Latest Word in Coils

摘要

Microchannel condenser coils use all-aluminum, brazed-fin construction. The coil is composed of three components:rn1. A flat microchannel tube.rn2. Fins located between the microchannel tubes.rn3. Two refrigerant manifolds.rnThe components are joined together into a single coil using aluminum-zinc alloy brazing materials in a nitrogen-charged brazing furnace.rnThe refrigerant carrying tube is essentially flat, with its interior sectioned into a series of multiple, parallel-flow microchannels that contain the refrigerant. In between the flat-tube microchannels are fins that have been optimized to increase heat transfer. The flat-tube microchannels are layered in parallel with the tubes connected between two refrigerant-distribution manifolds.