Reciprocating Action Solves Tough Heat Exchange Challenges

Scraped floor warmth exchangers have been used for troublesome warmth switch functions involving viscous fluids or where fouling is a matter, such as evaporation processes. The most common kind of scraped surface 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 based on this approach. However, the design isn’t optimum for every state of affairs, and so HRS developed the Unicus Series of reciprocating scraped surface warmth exchangers.
The Unicus Series of reciprocating scraped floor warmth exchangers is ideal for viscous merchandise similar to cream and tomato juice, as well as merchandise containing fruit pieces or particles.

The HRS Unicus Series is specifically designed to provide the improved heat switch of a conventional SSHE, but with a delicate motion to preserve the standard and integrity of delicate food products such as cheese, yoghurt, ice cream, meat paste, and merchandise containing whole items of fruits or vegetables. Over the years, numerous totally different scraper designs have been developed, which means that every software, from processing curds to heating sauce or pasteurizing fruit compotes may be dealt with in probably the most efficient yet light way attainable. Other applications where the Unicus Series has been helpful include 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 backwards and forwards within each interior tube. The movement performs two key functions: it minimizes potential fouling by preserving the tube wall clear and likewise creates turbulence inside the materials. Together, these actions improve the speed of heat switch in the material, making a extremely environment friendly process that’s best for viscous and high fouling supplies.
Since they are controlled separately, the velocity of the scrapers may be optimized for a specific product being processed, so that materials which are prone to shear stress or strain harm (such as lotions and custards) can be handled delicately to stop injury whereas nonetheless offering excessive ranges of heat switch. The Unicus Series has confirmed notably useful in dealing with viscous meals products 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 means that effective heat switch could be carried out at low pressures which overcomes these problems.

Each Unicus SSHE consists of three elements: a hydraulic cylinder and energy pack (although in smaller units a pneumatic cylinder can be provided instead), a separation chamber to make sure hygiene and protect product separation from the motor, and the heat exchanger itself. The heat exchanger consists of a selection of tubes, every of which incorporates a stainless-steel rod to which the appropriate scraping elements are fitted. Using a range of food-safe supplies including Teflon and PEEK (polyether ether ketone), these provide different internal geometry setups in accordance with the applying, corresponding to 120-degree scrapers for giant particulates and 360-degree scrapers for viscous fluids with out particulates.
ไดอะแฟรม can be fully scalable by rising the shell diameter and adding extra interior tubes from a single tube as a lot as eighty in a single shell. A key feature is the specially designed seals which separate the internal tube from the separation chamber, tailor-made to the product software. These seals prevent leakage of the product and guarantee inner and exterior hygiene. A commonplace range of fashions for meals processing present warmth switch areas from 7 to 107 square ft, while bigger fashions as a lot as nearly 1,300 square feet could be made for specific makes use of.

One area the place the Unicus Series excels is in evaporation functions, where the prevention of fouling is particularly essential. HRS has a selected model of the Unicus to be used in evaporation items the place quantity discount of the fabric is essential. The scraping action keeps the heat switch surfaces clean in order that Unicus evaporators can concentrate supplies to a stage 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 worldwide gross sales and marketing director for HRS Heat Exchangers. Located in Atlanta, Georgia, HRS Heat Exchangers is a part of the HRS Group, which operates at the forefront of thermal know-how, providing innovative heat transfer options worldwide throughout a various range of industries. With forty years’ expertise in the meals and beverage sector, specializing within the design and manufacture of an in depth vary of turnkey techniques and parts, incorporating corrugated tubular, and scraped floor heat exchanger know-how, HRS items are compliant with global design and industry requirements.For extra info, go to

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