Microchannel Coils

Design Highlights

MICROCHANNEL TUBES AND FINS

The coil design incorporates flat microchannel tubes and fins strips, brazed integrally, and resulting in high heat transfer performance. Depending on the application, tubes can be oriented horizontally or vertically to ensure predictable heat exchanger performance. State-of-the-art fin design, louvered or flat, provides low airside pressure drops and high heat transfer, as well as easier water condensate shedding due to using capillary forces and gravity to pull condensate off the coil.

MANIFOLDS

For evaporator and heat pump coils, an inbuilt DX distributor helps to evenly spread the incoming refrigerant across the width of the coil. This provides assured coil performance and efficient part-load operation. DX distributor eliminates the need for an external distributor with complex piping.

Outlet manifold of condenser coils serves as a mini-receiver, which accumulates and holds the liquid refrigerant, helps to reduce critical refrigerant charge issues, and provides easy system charging. The lower header has an internal outlet baffle, which prevents gaseous refrigerant from leaving the condenser.

REFRIGERANT CONNECTIONS

Microchannel coils are available with different types of connections, and with custom orientations. The special plastic/rubber inserts prevent the contact of aluminium and dissimilar metals to avoid galvanic corrosion.

REINFORCEMENT AND MOUNTINGS

The coil itself is a robust frame that provides airtight flush mounting, thereby eliminating unnecessary framing components while preventing air bypass.

The corrosion potential of the all-aluminium microchannel coils is significantly lower than in multi-metal coils as there are no dissimilar metals to initiate galvanic corrosion. This makes microchannel coils an inherently better solution for seashore installations, installations in polluted areas, or any application where corrosion may be a concern.

Microchannel coils require only one braze operation in the controlled environment, significantly reducing the likelihood of leaks when compared to manually brazed heat exchangers.

The advanced technology, accurate material selection, and use of modern braze furnaces guarantees the highest quality of our products, which is confirmed by both SWAAT tests and field experience.