Reciprocating Action Solves Tough Heat Exchange Challenges

Scraped surface heat exchangers have been used for troublesome warmth switch functions involving viscous fluids or the place fouling is a matter, similar to evaporation processes. The most typical sort of scraped floor heat exchanger (SSHE) makes use of a rotating shaft with blades or augers which scrape the floor of the tube. The popular HRS R Series is predicated on this method. However, the design isn’t optimum for every state of affairs, and so HRS developed the Unicus Series of reciprocating scraped surface warmth exchangers.
The Unicus Series of reciprocating scraped floor heat exchangers is ideal for viscous products similar to cream and tomato juice, in addition to merchandise containing fruit pieces or particles.

The HRS Unicus Series is specifically designed to supply the improved warmth switch of a traditional SSHE, however with a delicate action to preserve the standard and integrity of delicate meals products similar to cheese, yoghurt, ice cream, meat paste, and merchandise containing whole items of fruits or greens. Over the years, numerous different scraper designs have been developed, which means that each application, from processing curds to heating sauce or pasteurizing fruit compotes could be handled in probably the most environment friendly yet gentle way attainable. Other functions where the Unicus Series has been useful embody dealing with meat slurry and mince, and processing yeast-malt extracts.
The hygienic design makes use of a patented stainless-steel scraping mechanism that strikes hydraulically backwards and forwards within every interior tube. The motion performs two key functions: it minimizes potential fouling by preserving the tube wall clear and also creates turbulence inside the materials. Together, these actions improve the speed of heat switch within the material, creating a highly environment friendly course of that’s perfect for viscous and excessive fouling materials.
Since they are managed individually, the velocity of the scrapers could be optimized for a specific product being processed, in order that supplies which are susceptible to shear stress or strain injury (such as lotions and custards) could be dealt with delicately to stop harm while nonetheless offering excessive levels of heat switch. เกจวัดแรงดัน has proven notably useful in handling viscous meals merchandise where texture and consistency are essential attributes. For instance, some lotions or sauces may shear when subjected to excess stress, making them unusable. The Unicus implies that efficient heat switch could be carried out at low pressures which overcomes these issues.

Each Unicus SSHE consists of three elements: a hydraulic cylinder and energy pack (although in smaller items a pneumatic cylinder could be equipped instead), a separation chamber to ensure hygiene and preserve product separation from the motor, and the heat exchanger itself. The heat exchanger consists of numerous tubes, every of which incorporates a stainless-steel rod to which the suitable scraping parts are fitted. Using a range of food-safe materials including Teflon and PEEK (polyether ether ketone), these present totally different inside geometry setups based on the application, such as 120-degree scrapers for giant particulates and 360-degree scrapers for viscous fluids with out particulates.
The Unicus Series is also totally scalable by increasing the shell diameter and adding extra inside tubes from a single tube up to eighty in a single shell. A key characteristic is the specially designed seals which separate the internal tube from the separation chamber, tailored to the product utility. These seals forestall leakage of the product and ensure inside and external hygiene. A commonplace vary of models for food processing provide warmth transfer areas from 7 to 107 square ft, while larger fashions as much as practically 1,300 square toes may be made for specific uses.

One area the place the Unicus Series excels is in evaporation functions, where the prevention of fouling is particularly important. HRS has a particular version of the Unicus for use in evaporation items the place volume reduction of the material is essential. The scraping motion keeps the heat switch surfaces clean so that Unicus evaporators can concentrate supplies to a stage that’s unattainable utilizing traditional applied sciences. Unicus evaporators can be utilized in multi-effect setups or in combination with mechanical vapor recompression.
Matt Hale is international 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 know-how, offering revolutionary heat transfer options worldwide across a various vary of industries. With forty years’ experience within the meals and beverage sector, specializing within the design and manufacture of an extensive vary of turnkey systems and parts, incorporating corrugated tubular, and scraped floor warmth exchanger expertise, HRS units are compliant with world design and industry standards.For extra info, go to

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