Scraped floor warmth exchangers have been used for troublesome heat transfer applications involving viscous fluids or the place fouling is an issue, similar to evaporation processes. The commonest kind of scraped floor warmth 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 based on this approach. 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 warmth exchangers is good for viscous merchandise similar to cream and tomato juice, as well as merchandise containing fruit items or particles.
IT STARTS WITH DESIGN
The HRS Unicus Series is particularly designed to offer the improved warmth switch of a standard SSHE, however with a delicate action to protect the quality and integrity of delicate meals merchandise such as cheese, yoghurt, ice cream, meat paste, and merchandise containing entire pieces of fruits or vegetables. Over the years, a selection of totally different scraper designs have been developed, which means that each software, from processing curds to heating sauce or pasteurizing fruit compotes may be dealt with in the most efficient but gentle way possible. Other functions where the Unicus Series has been helpful include 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 inside every interior tube. The motion performs two key features: it minimizes potential fouling by keeping the tube wall clear and in addition creates turbulence throughout the material. Together, these actions improve the speed of warmth transfer within the material, making a extremely efficient process that is perfect for viscous and high fouling materials.
Since they’re managed individually, the velocity of the scrapers can be optimized for a particular product being processed, in order that materials which are prone to shear stress or strain harm (such as lotions and custards) can be dealt with delicately to forestall damage whereas still providing high ranges of warmth switch. The Unicus Series has confirmed significantly useful in handling viscous food products where texture and consistency are important attributes. For example, some lotions or sauces may shear when subjected to extra stress, making them unusable. The Unicus implies that effective warmth switch may be carried out at low pressures which overcomes these issues.
HRS UNICUS SERIES UP CLOSE
Each Unicus SSHE consists of three components: a hydraulic cylinder and power pack (although in smaller units a pneumatic cylinder could be supplied instead), a separation chamber to make sure hygiene and preserve product separation from the motor, and the warmth exchanger itself. The warmth exchanger consists of a variety of tubes, every of which incorporates a stainless-steel rod to which the suitable scraping elements are fitted. Using a spread of food-safe supplies together with Teflon and PEEK (polyether ether ketone), these provide totally different inner geometry setups in accordance with the appliance, similar to 120-degree scrapers for big particulates and 360-degree scrapers for viscous fluids with out particulates.
The Unicus Series can additionally be absolutely scalable by rising the shell diameter and adding extra inside tubes from a single tube as much as eighty in a single 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 stop leakage of the product and ensure inner and exterior hygiene. A standard vary of models for meals processing present warmth transfer areas from 7 to 107 sq. feet, while larger models up to nearly 1,300 square feet may be made for particular uses.
EXCELLENCE IN ACTION
One area the place the Unicus Series excels is in evaporation applications, where the prevention of fouling is particularly important. HRS has a selected version of the Unicus for use in evaporation units the place volume reduction of the material is crucial. pressure gauge scraping motion retains the warmth switch surfaces clear so that Unicus evaporators can concentrate supplies to a level that’s unattainable using traditional technologies. ไดอะแฟรม can be used in multi-effect setups or in combination with mechanical vapor recompression.
Matt Hale is international sales and advertising director for HRS Heat Exchangers. Located in Atlanta, Georgia, HRS Heat Exchangers is a half of the HRS Group, which operates at the forefront of thermal know-how, offering innovative heat transfer options worldwide across a diverse vary of industries. With forty years’ expertise within the food and beverage sector, specializing within the design and manufacture of an extensive vary of turnkey methods and components, incorporating corrugated tubular, and scraped floor heat exchanger technology, HRS items are compliant with world design and trade standards.For extra info, visit www.hrs-heatexchangers.com.
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