Reciprocating Action Solves Tough Heat Exchange Challenges

Scraped floor heat exchangers have been used for difficult heat transfer purposes involving viscous fluids or where fouling is a matter, corresponding to evaporation processes. The most typical sort of scraped floor warmth exchanger (SSHE) makes use of a rotating shaft with blades or augers which scrape the floor of the tube. The well-liked HRS R Series is predicated on this method. However, the design just isn’t optimal for each scenario, and so HRS developed the Unicus Series of reciprocating scraped surface warmth exchangers.
The Unicus Series of reciprocating scraped floor warmth exchangers is ideal for viscous merchandise such as cream and tomato juice, in addition to products containing fruit items or particles.
The HRS Unicus Series is specifically designed to supply the improved heat transfer of a conventional SSHE, however with a delicate motion to preserve the quality and integrity of delicate food merchandise corresponding to cheese, yoghurt, ice cream, meat paste, and merchandise containing entire pieces of fruits or vegetables. Over the years, numerous completely different scraper designs have been developed, which means that every software, from processing curds to heating sauce or pasteurizing fruit compotes could be dealt with in the most environment friendly yet gentle way potential. Other functions the place the Unicus Series has been helpful embody handling meat slurry and mince, and processing yeast-malt extracts.
The hygienic design uses a patented stainless-steel scraping mechanism that moves hydraulically back and forth within each inside tube. The movement performs two key functions: it minimizes potential fouling by preserving the tube wall clear and in addition creates turbulence inside the material. Together, these actions improve the rate of heat switch within the materials, creating a extremely efficient process that is ideal for viscous and high fouling supplies.
Since they’re controlled individually, the pace of the scrapers may be optimized for a specific product being processed, in order that materials which are prone to shear stress or stress harm (such as creams and custards) may be dealt with delicately to prevent injury while nonetheless offering high ranges of heat transfer. The Unicus Series has confirmed particularly useful in dealing with viscous food products where texture and consistency are necessary attributes. For instance, some lotions or sauces could shear when subjected to excess stress, making them unusable. The Unicus implies that efficient warmth switch can be carried out at low pressures which overcomes these problems.
Each Unicus SSHE consists of three parts: a hydraulic cylinder and power pack (although in smaller units a pneumatic cylinder could be equipped instead), a separation chamber to ensure hygiene and preserve product separation from the motor, and the warmth exchanger itself. The warmth exchanger consists of a selection of tubes, each of which accommodates a stainless-steel rod to which the suitable scraping components are fitted. Using เกรดวัดแรงดัน of food-safe materials together with Teflon and PEEK (polyether ether ketone), these provide totally different inner geometry setups according to the application, such as 120-degree scrapers for giant particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series can also be totally scalable by growing the shell diameter and including extra inside tubes from a single tube as a lot as eighty in one shell. A key function is the specially designed seals which separate the internal tube from the separation chamber, tailored to the product utility. These seals stop leakage of the product and ensure inner and exterior hygiene. A commonplace vary of fashions for food processing provide warmth transfer areas from 7 to 107 sq. ft, while larger fashions up to nearly 1,300 square feet may be made for specific makes use of.
One space where the Unicus Series excels is in evaporation purposes, the place the prevention of fouling is particularly necessary. HRS has a selected version of the Unicus to be used in evaporation items the place volume discount of the material is essential. The scraping action retains the warmth switch surfaces clean so that Unicus evaporators can concentrate supplies to a level that is unattainable utilizing conventional technologies. Unicus evaporators can be used in multi-effect setups or in combination with mechanical vapor recompression.
Matt Hale is worldwide gross sales and advertising director for HRS Heat Exchangers. Located in Atlanta, Georgia, HRS Heat Exchangers is a part of the HRS Group, which operates at the forefront of thermal know-how, providing innovative warmth transfer options worldwide across a various vary of industries. With forty years’ expertise within the meals and beverage sector, specializing within the design and manufacture of an intensive range of turnkey techniques and parts, incorporating corrugated tubular, and scraped floor heat exchanger expertise, HRS items are compliant with international design and business standards.For extra data, visit

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