Reciprocating Action Solves Tough Heat Exchange Challenges

Scraped floor warmth exchangers have been used for troublesome heat switch functions involving viscous fluids or where fouling is a matter, similar to evaporation processes. The commonest sort of scraped floor warmth 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 strategy. However, the design just isn’t optimal for each state of affairs, and so HRS developed the Unicus Series of reciprocating scraped floor heat exchangers.
The Unicus Series of reciprocating scraped surface warmth exchangers is good for viscous products such as cream and tomato juice, as properly as products containing fruit items or particles.
The HRS Unicus Series is particularly designed to provide the improved warmth transfer of a traditional SSHE, however with a gentle motion to preserve the standard and integrity of delicate meals products similar to cheese, yoghurt, ice cream, meat paste, and merchandise containing whole pieces of fruits or greens. Over the years, numerous completely different scraper designs have been developed, meaning that each software, from processing curds to heating sauce or pasteurizing fruit compotes can be handled in essentially the most efficient yet light method possible. Other purposes where the Unicus Series has been helpful embrace handling meat slurry and mince, and processing yeast-malt extracts.
The hygienic design makes use of a patented stainless-steel scraping mechanism that strikes hydraulically backwards and forwards within every inside tube. The movement performs two key capabilities: it minimizes potential fouling by preserving the tube wall clean and likewise creates turbulence inside the material. Together, these actions improve the speed of heat transfer in the materials, making a extremely efficient process that is best for viscous and excessive fouling materials.
Since they’re controlled separately, the velocity of the scrapers can be optimized for a selected product being processed, in order that materials which are susceptible to shear stress or strain harm (such as lotions and custards) may be dealt with delicately to forestall injury whereas nonetheless providing high levels of warmth transfer. The Unicus Series has proven significantly useful in handling viscous food products where texture and consistency are essential attributes. For example, some creams or sauces could shear when subjected to extra strain, making them unusable. The Unicus signifies that effective warmth switch can be carried out at low pressures which overcomes these issues.
Each Unicus SSHE consists of three components: a hydraulic cylinder and energy pack (although in smaller units a pneumatic cylinder may be supplied 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 variety of tubes, every of which incorporates a stainless-steel rod to which the suitable scraping elements are fitted. Using a variety of food-safe supplies together with Teflon and PEEK (polyether ether ketone), these provide completely different inner geometry setups in accordance with the application, similar to 120-degree scrapers for giant particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series can be totally scalable by growing the shell diameter and including more inside tubes from a single tube as a lot as eighty in one shell. A key function is the specially designed seals which separate the internal tube from the separation chamber, tailor-made to the product utility. These seals prevent leakage of the product and ensure internal and external hygiene. เกจวัดแรงดัน300psi of models for meals processing provide warmth transfer areas from 7 to 107 square toes, while bigger models as much as almost 1,300 square feet could be made for specific makes use of.
One area the place the Unicus Series excels is in evaporation purposes, where the prevention of fouling is especially necessary. HRS has a specific model of the Unicus for use in evaporation units the place volume reduction of the fabric is important. The scraping action retains the warmth switch surfaces clear in order that Unicus evaporators can focus materials to a stage 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 a half of the HRS Group, which operates at the forefront of thermal technology, providing progressive heat transfer options worldwide across a diverse vary of industries. With forty years’ expertise in the meals and beverage sector, specializing in the design and manufacture of an intensive range of turnkey systems and elements, incorporating corrugated tubular, and scraped floor heat exchanger technology, HRS units are compliant with world design and business standards.For extra information, visit

Leave a Comment