Instrument Associates, Inc - Sentry Heat Exchangers

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Tube-In-Tube Heat Exchangers
Plate Heat Exchanger
Spiral Tube Heat Exchanger

Spiral Tube Heat Exchanger is a coil assembly fitted in a compact shell that optimizes heat transfer efficiency and space. Every Sentry spiral coil assembly has welded tube to manifold joints and uses stainless steel as minimum material requirement for durability and strength. The coil assembly is welded to a head and fitted in a compact shell. The spaces or gaps between the coils of the spiral tube bundle become the shell side flow path when the bundle is placed in the shell. Tube side and shell side connections on the bottom or top of the assembly allow for different flow path configurations.

The spiral shape of the flow for the tubeside and shellside fluids creates centrifugal force and the secondary circulating flow that enhances the heat transfer on both sides in a true counterflow arrangement. You get the advantage of tube side enhancement without the associated potential for plugging on both the shell and tube side of the heat exchanger. Since there are no baffles or dead spots to lower velocities and coefficients, heat transfer performance is optimized. Additionally, since there are a variety of multiple parallel tube configurations ( diameter, number and length), efficiency is not compromised by limited shell diameter sizes as it is in shell diameter sizes as it is in shell and tube designs.

The profile of a spiral is very compact and fits in a smaller footprint than a shell and tube design. Since the tube bundle is coiled, space requirements for tube bundle removal are virtually eliminated.
When exotic material is required, a spiral tube heat exchanger minimizes the material used since manifolds replace the channels, heads and tube sheets of a conventional shell and tube design. The shell side is usually smaller than a comparable shell and tube design and there are no requirements for tube supports or pass dividers.

Instrument Associates, Inc.