Scraped surface heat exchangers have been used for difficult heat switch applications involving viscous fluids or the place fouling is an issue, corresponding to evaporation processes. The most common 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 in style HRS R Series is predicated on this strategy. However, the design just isn’t optimal for each scenario, and so HRS developed the Unicus Series of reciprocating scraped surface heat exchangers.
The Unicus Series of reciprocating scraped surface heat exchangers is ideal for viscous merchandise corresponding to cream and tomato juice, in addition to merchandise containing fruit pieces or particles.
IT STARTS WITH DESIGN
The HRS Unicus Series is particularly designed to provide the improved heat switch of a traditional SSHE, but with a mild action to protect the quality and integrity of delicate food products such as cheese, yoghurt, ice cream, meat paste, and merchandise containing entire items of fruits or vegetables. Over the years, a variety of different scraper designs have been developed, which means that every application, from processing curds to heating sauce or pasteurizing fruit compotes could be dealt with in probably the most efficient yet light method possible. Other functions where the Unicus Series has been beneficial embrace 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 forwards and backwards within each interior tube. The movement performs two key functions: it minimizes potential fouling by keeping the tube wall clear and likewise creates turbulence throughout the materials. Together, these actions enhance the speed of heat transfer within the material, making a highly environment friendly course of that’s ideal for viscous and excessive fouling supplies.
Since they’re managed individually, the velocity of the scrapers can be optimized for a specific product being processed, in order that materials which are susceptible to shear stress or stress injury (such as creams and custards) can be handled delicately to stop damage while nonetheless offering excessive ranges of warmth switch. The Unicus Series has confirmed significantly helpful in handling viscous food products the place texture and consistency are important attributes. For example, some creams or sauces could shear when subjected to extra pressure, making them unusable. The Unicus signifies that effective heat switch could be carried out at low pressures which overcomes these problems.
HRS UNICUS SERIES UP CLOSE
Each Unicus SSHE consists of three elements: a hydraulic cylinder and energy 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 numerous tubes, every of which accommodates a stainless-steel rod to which the suitable scraping parts are fitted. Using เกจวัดแรงดันน้ำ10บาร์ of food-safe supplies together with Teflon and PEEK (polyether ether ketone), these present totally different inside geometry setups based on the applying, such as 120-degree scrapers for giant particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series can be absolutely scalable by growing the shell diameter and adding more interior tubes from a single tube as much as eighty in a single shell. A key feature is the specifically designed seals which separate the inside tube from the separation chamber, tailor-made to the product application. These seals prevent leakage of the product and guarantee inside and exterior hygiene. A normal range of models for food processing provide warmth switch areas from 7 to 107 sq. toes, while larger fashions up to practically 1,300 sq. feet may be made for particular makes use of.
EXCELLENCE IN ACTION
One area the place the Unicus Series excels is in evaporation purposes, the place the prevention of fouling is particularly important. HRS has a particular version of the Unicus to be used in evaporation items where volume reduction of the fabric is crucial. The scraping motion keeps the heat switch surfaces clean so that Unicus evaporators can concentrate supplies to a degree that is unattainable utilizing traditional technologies. Unicus evaporators can be used in multi-effect setups or together 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 part of the HRS Group, which operates on the forefront of thermal expertise, offering revolutionary warmth switch options worldwide throughout a diverse range of industries. With forty years’ experience in the meals and beverage sector, specializing within the design and manufacture of an intensive range of turnkey methods and parts, incorporating corrugated tubular, and scraped floor warmth exchanger expertise, HRS models are compliant with world design and business standards.For more info, visit www.hrs-heatexchangers.com.
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