Scraped floor warmth exchangers have been used for tough warmth switch applications involving viscous fluids or the place fouling is an issue, such as evaporation processes. The commonest type of scraped floor heat exchanger (SSHE) uses a rotating shaft with blades or augers which scrape the floor of the tube. The well-liked HRS R Series is predicated on this method. However, the design isn’t optimal for each situation, and so HRS developed the Unicus Series of reciprocating scraped surface heat exchangers.
The Unicus Series of reciprocating scraped surface warmth exchangers is right for viscous products corresponding to 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 offer the improved warmth transfer of a standard SSHE, but with a mild motion to preserve the standard and integrity of delicate meals merchandise such as cheese, yoghurt, ice cream, meat paste, and products containing whole items of fruits or vegetables. Over the years, numerous totally different scraper designs have been developed, that means that each software, from processing curds to heating sauce or pasteurizing fruit compotes can be handled in probably the most efficient but gentle method potential. Other purposes the place the Unicus Series has been beneficial include dealing with meat slurry and mince, and processing yeast-malt extracts.
The hygienic design uses a patented stainless-steel scraping mechanism that strikes hydraulically backwards and forwards inside every inside tube. The motion performs two key features: it minimizes potential fouling by preserving the tube wall clean and in addition creates turbulence within the materials. Together, these actions improve the rate of heat switch within the materials, creating a highly efficient process that is ideal for viscous and high fouling materials.
Since they are managed individually, the velocity of the scrapers may be optimized for a particular product being processed, in order that materials which are vulnerable to shear stress or pressure damage (such as creams and custards) could be dealt with delicately to stop damage while still providing excessive ranges of warmth switch. The Unicus Series has proven particularly helpful in handling viscous meals merchandise the place texture and consistency are necessary attributes. For instance, some creams or sauces might shear when subjected to excess strain, making them unusable. The Unicus implies that effective warmth switch could be carried out at low pressures which overcomes these problems.
HRS UNICUS SERIES UP CLOSE
Each Unicus SSHE consists of three components: a hydraulic cylinder and energy pack (although in smaller items a pneumatic cylinder could be provided instead), a separation chamber to ensure hygiene and protect product separation from the motor, and the heat exchanger itself. The warmth exchanger consists of a number of tubes, each of which contains a stainless-steel rod to which the suitable scraping components are fitted. Using a range of food-safe materials together with Teflon and PEEK (polyether ether ketone), these present totally different inside geometry setups based on the applying, similar to 120-degree scrapers for large particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series is also totally scalable by increasing the shell diameter and including 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 internal tube from the separation chamber, tailored to the product application. These seals prevent leakage of the product and guarantee internal and external hygiene. A normal vary of fashions for food processing present warmth switch areas from 7 to 107 sq. ft, while bigger models up to nearly 1,300 square ft could be made for specific makes use of.
EXCELLENCE IN ACTION
One area the place the Unicus Series excels is in evaporation purposes, the place the prevention of fouling is particularly essential. HRS has a selected model of the Unicus to be used in evaporation models where quantity reduction of the fabric is essential. The scraping action retains the warmth switch surfaces clean in order that Unicus evaporators can focus supplies to a stage that’s unattainable using traditional technologies. เกจวัดแรงดันco2 can be used in multi-effect setups or together with mechanical vapor recompression.
Matt Hale is international sales and marketing 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 intensive vary of turnkey systems and elements, incorporating corrugated tubular, and scraped surface warmth exchanger know-how, HRS items are compliant with international design and industry requirements.For more data, visit www.hrs-heatexchangers.com.
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