Scraped floor warmth exchangers have been used for troublesome warmth transfer functions involving viscous fluids or the place fouling is an issue, such as evaporation processes. The most common sort of scraped surface heat exchanger (SSHE) uses a rotating shaft with blades or augers which scrape the surface of the tube. ไดอะแฟรม ซีล -liked HRS R Series relies on this approach. However, the design is not optimum for each scenario, and so HRS developed the Unicus Series of reciprocating scraped surface heat exchangers.
The Unicus Series of reciprocating scraped floor warmth exchangers is good for viscous merchandise such as cream and tomato juice, in addition to merchandise containing fruit items or particles.
IT STARTS WITH DESIGN
The HRS Unicus Series is specifically designed to supply the improved warmth transfer of a standard SSHE, but with a gentle motion to protect the quality and integrity of delicate food merchandise similar to cheese, yoghurt, ice cream, meat paste, and merchandise containing whole pieces of fruits or greens. Over the years, a quantity of totally different scraper designs have been developed, which means that every application, from processing curds to heating sauce or pasteurizing fruit compotes may be handled in the most efficient yet light way possible. Other purposes the place the Unicus Series has been useful embody dealing with 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 every inside tube. pressure gauge performs two key features: it minimizes potential fouling by keeping the tube wall clear and likewise creates turbulence inside the material. Together, these actions improve the rate of warmth transfer within the materials, making a extremely environment friendly process that is ideal for viscous and excessive fouling materials.
Since they’re controlled individually, the speed of the scrapers can be optimized for a specific product being processed, in order that supplies that are vulnerable to shear stress or stress harm (such as lotions and custards) can be dealt with delicately to stop injury while still offering high levels of heat switch. The Unicus Series has confirmed particularly useful in dealing with viscous food merchandise where texture and consistency are necessary attributes. For example, some lotions or sauces may shear when subjected to excess stress, making them unusable. The Unicus signifies that efficient heat transfer can 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 power pack (although in smaller units a pneumatic cylinder can be provided 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, each of which incorporates a stainless-steel rod to which the appropriate scraping components are fitted. Using a variety of food-safe supplies together with Teflon and PEEK (polyether ether ketone), these provide totally different internal geometry setups in accordance with the application, 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 rising 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 forestall leakage of the product and ensure internal and exterior hygiene. A commonplace range of fashions for food processing provide warmth switch areas from 7 to 107 sq. feet, whereas bigger fashions as much as practically 1,300 sq. toes may be made for specific uses.
EXCELLENCE IN ACTION
One area where the Unicus Series excels is in evaporation functions, the place the prevention of fouling is especially important. HRS has a particular version of the Unicus for use in evaporation models the place quantity discount of the material is essential. The scraping motion keeps the heat switch surfaces clear so that Unicus evaporators can concentrate supplies to a level 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 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 expertise, providing revolutionary heat transfer solutions worldwide across a various vary of industries. With forty years’ experience within the food and beverage sector, specializing within the design and manufacture of an intensive range of turnkey systems and components, incorporating corrugated tubular, and scraped surface warmth exchanger expertise, HRS units are compliant with world design and business standards.For more data, go to www.hrs-heatexchangers.com.
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