HRS multi-pass RMP Series scraped surface heat exchangers

Wednesday, 04 March, 2020 | Supplied by: HRS Heat Exchangers Australia New Zealand

The HRS RMP Series of scraped surface heat exchangers is designed to improve the heat transfer of viscous materials and is available in single and multiple tube configurations. The R3 model contains three tubes, which provides a greater heat transfer area within the same footprint as a single unit. It also has the benefits of a single heat exchanger, such as a single set of connections to the product and services, and the reliability of a single drive assembly compared with multiple motors.

In its standard configuration, product passes from a single-entry point through the three tubes in parallel before exiting the exchanger from a single port. This reduces the overall velocity of the product as it passes through the heat exchanger and prevents operation in a pure counter-current flow.

However, the new multi-pass arrangement, known as the RMP, now links each of the three tubes in series: product enters through one tube, passes down the next and then moves back up the third. The use of longitudinal baffles in the outer shell achieves a true counter-current flow to improve heat exchange efficiency, while maintaining product velocity helps reduce pressure drop and increases product mixing. Crucially, the RMP maintains the overall large surface area of a standard R3 system within a compact unit — one of the system’s key benefits.

As the new layout has a consistent cross-sectional area, the risk of dilution and blending from cleaning-in-place (CIP) operations is greatly reduced compared to other large surface area heat exchangers. Flushing is therefore more efficient, enabling greater recovery of high-value products without contamination or mixing, while the cleaning phase itself is also more effective due to the maintained velocity.

The RMP Series is suitable for a range of challenging viscous materials and is being deployed in a number of sectors, including viscous and starchy foods, such as thick sauces, pastes, creams and pet foods, for example.

Phone: 03 9489 1866
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