Scraped surface warmth exchangers have been used for tough warmth transfer purposes involving viscous fluids or where fouling is an issue, corresponding to evaporation processes. The most common type of scraped surface warmth exchanger (SSHE) makes use of a rotating shaft with blades or augers which scrape the surface of the tube. The popular HRS R Series is predicated on this strategy. However, the design is not optimum for every situation, and so HRS developed the Unicus Series of reciprocating scraped surface heat exchangers.
The Unicus Series of reciprocating scraped floor heat exchangers is right for viscous merchandise similar to cream and tomato juice, in addition to merchandise containing fruit items or particles.
เกจวัดแรงดันดิจิตอล is particularly designed to offer the improved heat transfer of a traditional SSHE, but with a gentle motion to preserve the quality and integrity of delicate meals merchandise similar to cheese, yoghurt, ice cream, meat paste, and merchandise containing whole items of fruits or greens. Over the years, a quantity of completely different scraper designs have been developed, meaning that each utility, from processing curds to heating sauce or pasteurizing fruit compotes could be handled in probably the most environment friendly yet light means potential. Other applications where the Unicus Series has been beneficial 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 within every interior tube. The motion performs two key features: it minimizes potential fouling by preserving the tube wall clear and likewise creates turbulence within the materials. Together, these actions improve the speed of warmth transfer in the material, creating a extremely efficient course of that’s ideal for viscous and excessive fouling materials.
Since they’re controlled separately, the speed of the scrapers may be optimized for a particular product being processed, so that supplies that are susceptible to shear stress or stress injury (such as creams and custards) could be handled delicately to forestall injury whereas still offering high levels of warmth transfer. The Unicus Series has proven significantly useful in handling viscous meals products the place texture and consistency are essential attributes. For instance, some creams or sauces may shear when subjected to extra pressure, making them unusable. The Unicus signifies that effective warmth switch could be carried out at low pressures which overcomes these issues.
Each Unicus SSHE consists of three parts: a hydraulic cylinder and power pack (although in smaller models a pneumatic cylinder can 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 quantity of tubes, every of which incorporates a stainless-steel rod to which the appropriate scraping parts are fitted. Using a spread of food-safe supplies including Teflon and PEEK (polyether ether ketone), these present totally different inner geometry setups according to the application, corresponding to 120-degree scrapers for large particulates and 360-degree scrapers for viscous fluids with out particulates.
The Unicus Series is also fully scalable by growing the shell diameter and including extra inside tubes from a single tube up to eighty in a single shell. A key function is the specifically designed seals which separate the inside tube from the separation chamber, tailor-made to the product utility. These seals prevent leakage of the product and ensure internal and exterior hygiene. A normal vary of fashions for meals processing provide heat switch areas from 7 to 107 square feet, while larger fashions up to nearly 1,300 sq. ft may be made for specific makes use of.
One space where 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 units where volume reduction of the material is crucial. The scraping motion keeps the warmth transfer surfaces clear so that Unicus evaporators can concentrate supplies to a degree that is unattainable utilizing conventional applied sciences. Unicus evaporators can be used in multi-effect setups or together with mechanical vapor recompression.
Matt Hale is international gross 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, providing revolutionary warmth switch solutions worldwide across a diverse range of industries. With forty years’ expertise within the meals and beverage sector, specializing in the design and manufacture of an in depth range of turnkey systems and elements, incorporating corrugated tubular, and scraped surface warmth exchanger know-how, HRS items are compliant with international design and industry standards.For more information, visit