Scraped floor warmth exchangers have been used for difficult heat transfer applications involving viscous fluids or the place fouling is an issue, corresponding to evaporation processes. The commonest type of scraped surface 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 method. However, the design is not optimal 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 heat exchangers is good 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 switch of a standard SSHE, but with a mild action to preserve the standard and integrity of delicate meals products corresponding to cheese, yoghurt, ice cream, meat paste, and merchandise containing complete pieces of fruits or vegetables. Over ไดอะแฟรม ซีล , a number of totally different scraper designs have been developed, which means that each utility, from processing curds to heating sauce or pasteurizing fruit compotes can be dealt with in essentially the most efficient but light way possible. Other purposes the place the Unicus Series has been beneficial embrace 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 interior tube. The movement performs two key functions: it minimizes potential fouling by maintaining the tube wall clear and also creates turbulence inside the material. Together, these actions increase the speed of warmth transfer in the material, making a highly efficient course of that is best for viscous and high fouling materials.
Since they’re managed separately, the velocity of the scrapers may be optimized for a selected product being processed, in order that supplies that are prone to shear stress or strain damage (such as creams and custards) could be dealt with delicately to prevent harm while nonetheless offering high levels of warmth switch. The Unicus Series has confirmed significantly useful in handling viscous meals merchandise the place texture and consistency are important attributes. For instance, some creams or sauces could shear when subjected to excess pressure, making them unusable. The Unicus implies that efficient heat transfer may be carried out at low pressures which overcomes these problems.
HRS UNICUS SERIES UP CLOSE
Each Unicus SSHE consists of three parts: a hydraulic cylinder and power pack (although in smaller models a pneumatic cylinder could be supplied instead), a separation chamber to make sure hygiene and preserve product separation from the motor, and the heat exchanger itself. The heat exchanger consists of numerous tubes, every of which incorporates a stainless-steel rod to which the suitable scraping elements are fitted. Using a range of food-safe supplies including Teflon and PEEK (polyether ether ketone), these provide completely different inside geometry setups according to the applying, such as 120-degree scrapers for big particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series is also totally 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 internal tube from the separation chamber, tailored to the product application. These seals stop leakage of the product and ensure internal and exterior hygiene. A normal range of fashions for meals processing provide warmth switch areas from 7 to 107 sq. toes, whereas bigger models as much as nearly 1,300 sq. feet can be made for specific makes use of.
EXCELLENCE IN ACTION
One area the place the Unicus Series excels is in evaporation purposes, where the prevention of fouling is particularly essential. HRS has a selected version of the Unicus for use in evaporation models where quantity reduction of the fabric is crucial. The scraping motion keeps the heat switch surfaces clean in order that Unicus evaporators can focus supplies to a level that is unattainable utilizing conventional technologies. Unicus evaporators can be utilized in multi-effect setups or in combination with mechanical vapor recompression.
Matt Hale is worldwide sales and advertising director for HRS Heat Exchangers. Located in Atlanta, Georgia, HRS Heat Exchangers is part of the HRS Group, which operates at the forefront of thermal technology, offering innovative warmth switch solutions worldwide throughout a various range of industries. With forty years’ expertise in the meals and beverage sector, specializing within the design and manufacture of an intensive range of turnkey systems and elements, incorporating corrugated tubular, and scraped floor warmth exchanger know-how, HRS models are compliant with global design and industry standards.For more info, visit www.hrs-heatexchangers.com.
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