Reciprocating Action Solves Tough Heat Exchange Challenges

Scraped floor warmth exchangers have been used for troublesome heat switch applications involving viscous fluids or where fouling is an issue, similar to evaporation processes. The commonest kind of scraped surface heat exchanger (SSHE) uses a rotating shaft with blades or augers which scrape the floor of the tube. The popular HRS R Series is based on this method. However, the design 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 floor warmth exchangers is good for viscous products such as cream and tomato juice, in addition to merchandise containing fruit pieces or particles.
The HRS Unicus Series is particularly designed to offer the improved heat switch of a conventional SSHE, but with a mild motion to protect the standard and integrity of delicate meals merchandise similar to cheese, yoghurt, ice cream, meat paste, and products containing entire items of fruits or greens. Over the years, a number of completely different scraper designs have been developed, that means that each application, from processing curds to heating sauce or pasteurizing fruit compotes could be dealt with in the most efficient yet mild method possible. Other purposes 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 strikes hydraulically backwards and forwards inside each inside tube. The motion performs two key capabilities: it minimizes potential fouling by keeping the tube wall clean and in addition creates turbulence inside the materials. Together, these actions enhance the speed of heat transfer within the materials, creating a highly efficient process that’s perfect for viscous and excessive fouling supplies.
Since they’re managed individually, the velocity of the scrapers could be optimized for a selected product being processed, so that supplies that are vulnerable to shear stress or strain damage (such as creams and custards) may be dealt with delicately to stop harm while nonetheless offering high ranges of warmth switch. The Unicus Series has confirmed notably useful in handling viscous meals merchandise where texture and consistency are necessary attributes. For instance, some creams or sauces might shear when subjected to excess strain, making them unusable. The Unicus means that efficient heat switch could be carried out at low pressures which overcomes these problems.
Each Unicus SSHE consists of three components: a hydraulic cylinder and power pack (although in smaller models a pneumatic cylinder can be provided instead), a separation chamber to make sure hygiene and preserve product separation from the motor, and the heat exchanger itself. The warmth exchanger consists of a quantity of tubes, each of which incorporates a stainless-steel rod to which the appropriate scraping components are fitted. Using a range of food-safe supplies including Teflon and PEEK (polyether ether ketone), these present completely different internal geometry setups in accordance with the application, such as 120-degree scrapers for giant particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series is also absolutely scalable by growing the shell diameter and adding more inside tubes from a single tube up to eighty in a single shell. A key feature is the specially designed seals which separate the inside tube from the separation chamber, tailored to the product utility. These seals forestall leakage of the product and ensure inner and external hygiene. A commonplace range of fashions for meals processing provide warmth switch areas from 7 to 107 square ft, whereas larger models as a lot as practically 1,300 square feet may be made for specific uses.
One area where the Unicus Series excels is in evaporation applications, where the prevention of fouling is particularly essential. HRS has a specific version of the Unicus to be used in evaporation models where quantity discount of the material is crucial. Accredited scraping action keeps the warmth switch surfaces clean in order that Unicus evaporators can concentrate materials to a level that’s unattainable utilizing conventional applied sciences. Unicus evaporators can be used in multi-effect setups or together with mechanical vapor recompression.
Manageable is worldwide gross sales and advertising director for HRS Heat Exchangers. Located in Atlanta, Georgia, HRS Heat Exchangers is a part of the HRS Group, which operates on the forefront of thermal know-how, providing revolutionary warmth transfer options worldwide throughout a various range of industries. With forty years’ expertise in the food and beverage sector, specializing within the design and manufacture of an intensive range of turnkey systems and elements, incorporating corrugated tubular, and scraped floor heat exchanger expertise, HRS models are compliant with international design and business standards.For more information, visit

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