Scraped floor heat exchangers have been used for troublesome warmth transfer purposes involving viscous fluids or where fouling is a matter, similar to evaporation processes. The most typical kind of scraped floor heat exchanger (SSHE) uses a rotating shaft with blades or augers which scrape the surface of the tube. The in style HRS R Series relies on this approach. However, the design is not optimal for each situation, and so HRS developed the Unicus Series of reciprocating scraped floor warmth exchangers.
The Unicus Series of reciprocating scraped floor heat exchangers is good for viscous merchandise corresponding 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 provide the improved warmth switch of a standard SSHE, however with a gentle action to preserve the standard and integrity of delicate food merchandise corresponding to cheese, yoghurt, ice cream, meat paste, and products containing whole items of fruits or greens. Over the years, a quantity of totally different scraper designs have been developed, which means that every utility, from processing curds to heating sauce or pasteurizing fruit compotes may be dealt with in probably the most efficient yet light method possible. Other purposes the place the Unicus Series has been helpful 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 moves hydraulically forwards and backwards within every inside tube. The motion performs two key functions: it minimizes potential fouling by preserving the tube wall clear and also creates turbulence throughout the material. Together, these actions improve the rate of heat switch in the material, making a extremely efficient process that is perfect for viscous and high fouling materials.
Since they are managed separately, the pace of the scrapers may be optimized for a specific product being processed, so that materials that are prone to shear stress or stress injury (such as lotions and custards) could be handled delicately to forestall damage while nonetheless providing excessive ranges of warmth switch. The Unicus Series has confirmed significantly useful in dealing with viscous meals products the place texture and consistency are essential attributes. For example, some lotions or sauces could shear when subjected to excess stress, making them unusable. The Unicus signifies that efficient heat switch may be carried out at low pressures which overcomes these issues.
เกจวัดแรงดันอากาศ consists of three components: a hydraulic cylinder and energy pack (although in smaller units a pneumatic cylinder may be equipped 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 contains a stainless-steel rod to which the appropriate scraping elements are fitted. Using a variety of food-safe materials together with Teflon and PEEK (polyether ether ketone), these provide different internal geometry setups based on the application, corresponding to 120-degree scrapers for giant particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series is also absolutely scalable by increasing the shell diameter and adding extra interior tubes from a single tube as a lot as eighty in a single shell. A key function is the specially designed seals which separate the inner tube from the separation chamber, tailored to the product application. These seals forestall leakage of the product and guarantee inner and exterior hygiene. A standard vary of models for meals processing present heat switch areas from 7 to 107 square ft, whereas larger fashions up to almost 1,300 square toes could be made for particular uses.
EXCELLENCE IN ACTION
One space where the Unicus Series excels is in evaporation applications, the place the prevention of fouling is particularly essential. HRS has a particular version 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 in order that Unicus evaporators can concentrate materials to a level that’s unattainable utilizing traditional applied sciences. Unicus evaporators 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 part of the HRS Group, which operates at the forefront of thermal know-how, offering progressive heat transfer options worldwide across a various vary of industries. With forty years’ expertise in the meals and beverage sector, specializing in the design and manufacture of an in depth range of turnkey methods and components, incorporating corrugated tubular, and scraped surface heat exchanger expertise, HRS models are compliant with international design and industry standards.For extra info, visit www.hrs-heatexchangers.com.
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