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Scraped surface heat exchangers have been used for troublesome warmth transfer purposes involving viscous fluids or where fouling is a matter, such as evaporation processes. The most typical type of scraped surface heat exchanger (SSHE) uses a rotating shaft with blades or augers which scrape the floor of the tube. The in style HRS R Series relies on this strategy. However, the design isn’t optimum for each state of affairs, and so HRS developed the Unicus Series of reciprocating scraped floor heat exchangers.
The Unicus Series of reciprocating scraped surface heat exchangers is right for viscous products such as cream and tomato juice, in addition to merchandise containing fruit items or particles.
IT STARTS WITH DESIGN
The HRS Unicus Series is particularly designed to supply the improved heat transfer of a conventional SSHE, however with a delicate action to protect the quality and integrity of delicate meals merchandise similar to cheese, yoghurt, ice cream, meat paste, and merchandise containing whole pieces of fruits or greens. Over the years, a variety of totally different scraper designs have been developed, that means that every utility, from processing curds to heating sauce or pasteurizing fruit compotes can be handled in the most environment friendly yet light way possible. Other purposes the place the Unicus Series has been useful embrace dealing with meat slurry and mince, and processing yeast-malt extracts.
The hygienic design uses a patented stainless-steel scraping mechanism that strikes hydraulically back and forth within every interior tube. The motion performs two key capabilities: it minimizes potential fouling by keeping the tube wall clear and in addition creates turbulence throughout the materials. Together, differential pressure gauge ราคา enhance the speed of heat switch within the materials, creating a highly efficient process that’s best for viscous and high fouling materials.
Since they are managed separately, the velocity of the scrapers can be optimized for a particular product being processed, so that supplies that are prone to shear stress or stress harm (such as lotions and custards) can be handled delicately to forestall harm while still providing excessive levels of heat transfer. The Unicus Series has confirmed notably helpful in handling viscous food merchandise where texture and consistency are essential attributes. For example, some creams or sauces may shear when subjected to excess strain, making them unusable. The Unicus implies that efficient warmth switch can be carried out at low pressures which overcomes these issues.
HRS UNICUS SERIES UP CLOSE
Each Unicus SSHE consists of three parts: a hydraulic cylinder and power pack (although in smaller items a pneumatic cylinder could be equipped instead), a separation chamber to ensure hygiene and protect product separation from the motor, and the warmth exchanger itself. The heat exchanger consists of numerous tubes, every of which contains a stainless-steel rod to which the suitable scraping parts are fitted. Using a spread of food-safe materials together with Teflon and PEEK (polyether ether ketone), these present totally different inside geometry setups based on the applying, corresponding to 120-degree scrapers for large particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series is also absolutely scalable by increasing the shell diameter and including more interior tubes from a single tube up to eighty in one shell. A key characteristic is the specifically designed seals which separate the inner tube from the separation chamber, tailor-made to the product application. These seals forestall leakage of the product and guarantee internal and external hygiene. A standard vary of models for food processing provide warmth switch areas from 7 to 107 sq. ft, whereas bigger fashions up to almost 1,300 sq. toes could be made for specific uses.
EXCELLENCE IN ACTION
One area the place the Unicus Series excels is in evaporation functions, the place the prevention of fouling is especially important. HRS has a selected model of the Unicus to be used in evaporation units where volume reduction of the fabric is important. The scraping action retains the heat switch surfaces clear so that Unicus evaporators can focus materials to a level that’s unattainable utilizing conventional technologies. Unicus evaporators can be utilized 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 know-how, offering progressive heat transfer options worldwide throughout a diverse range of industries. With forty years’ expertise within the meals and beverage sector, specializing within the design and manufacture of an extensive vary of turnkey systems and elements, incorporating corrugated tubular, and scraped floor warmth exchanger know-how, HRS models are compliant with global design and trade requirements.For more information, go to www.hrs-heatexchangers.com.
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