Reciprocating Action Solves Tough Heat Exchange Challenges

Quadruple have been used for troublesome heat transfer applications involving viscous fluids or the place fouling is an issue, such as evaporation processes. The most typical sort of scraped surface heat exchanger (SSHE) uses a rotating shaft with blades or augers which scrape the surface of the tube. In less than relies on this strategy. However, the design is not optimal for each scenario, and so HRS developed the Unicus Series of reciprocating scraped floor heat exchangers.
The Unicus Series of reciprocating scraped floor warmth exchangers is ideal for viscous merchandise such as cream and tomato juice, in addition to merchandise containing fruit pieces or particles.
The HRS Unicus Series is particularly designed to provide the improved heat transfer of a traditional SSHE, but with a gentle motion to protect the quality and integrity of delicate food merchandise corresponding to cheese, yoghurt, ice cream, meat paste, and products containing entire items of fruits or greens. Over the years, numerous different scraper designs have been developed, that means that every application, from processing curds to heating sauce or pasteurizing fruit compotes can be dealt with in the most efficient but light way possible. Other applications the place the Unicus Series has been useful include handling meat slurry and mince, and processing yeast-malt extracts.
The hygienic design makes use of a patented stainless-steel scraping mechanism that moves hydraulically back and forth inside each interior tube. The motion performs two key capabilities: it minimizes potential fouling by preserving the tube wall clear and likewise creates turbulence throughout the material. Together, these actions improve the speed of heat switch in the materials, creating a highly environment friendly course of that’s perfect for viscous and high fouling materials.
Since they’re managed individually, the velocity of the scrapers could be optimized for a particular product being processed, so that supplies that are prone to shear stress or pressure injury (such as creams and custards) could be dealt with delicately to stop damage while still providing high ranges of warmth switch. The Unicus Series has confirmed particularly useful in handling viscous food products the place texture and consistency are necessary attributes. For instance, some lotions or sauces could shear when subjected to extra pressure, making them unusable. The Unicus implies that effective warmth switch may be carried out at low pressures which overcomes these issues.
Each Unicus SSHE consists of three components: a hydraulic cylinder and power pack (although in smaller models a pneumatic cylinder may be equipped instead), a separation chamber to ensure hygiene and protect product separation from the motor, and the heat exchanger itself. The warmth exchanger consists of a variety of tubes, every of which incorporates a stainless-steel rod to which the suitable scraping parts are fitted. Using a spread of food-safe materials including Teflon and PEEK (polyether ether ketone), these present completely different internal geometry setups in accordance with the appliance, such as 120-degree scrapers for large particulates and 360-degree scrapers for viscous fluids with out particulates.
The Unicus Series can also be totally scalable by growing the shell diameter and including extra inside tubes from a single tube up to eighty in one shell. A key feature is the specially designed seals which separate the inside tube from the separation chamber, tailored to the product software. These seals prevent leakage of the product and guarantee inside and exterior hygiene. A normal vary of fashions for food processing present warmth transfer areas from 7 to 107 sq. feet, whereas larger fashions as a lot as almost 1,300 square ft may be made for particular makes use of.
One area the place the Unicus Series excels is in evaporation purposes, the place the prevention of fouling is especially necessary. HRS has a specific version of the Unicus to be used in evaporation models where quantity discount of the material is essential. The scraping motion keeps the warmth switch surfaces clear so that Unicus evaporators can focus materials to a degree that is unattainable using conventional technologies. Unicus evaporators can be utilized in multi-effect setups or in combination with mechanical vapor recompression.
Matt Hale is international gross sales and marketing director for HRS Heat Exchangers. Located in Atlanta, Georgia, HRS Heat Exchangers is part of the HRS Group, which operates at the forefront of thermal expertise, providing progressive warmth switch options worldwide across a various vary of industries. With forty years’ experience in the food and beverage sector, specializing in the design and manufacture of an in depth vary of turnkey methods and elements, incorporating corrugated tubular, and scraped floor warmth exchanger know-how, HRS items are compliant with international design and business requirements.For more info, go to

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