Reciprocating Action Solves Tough Heat Exchange Challenges

Scraped floor heat exchangers have been used for troublesome warmth switch applications involving viscous fluids or where fouling is an issue, similar to evaporation processes. The most common type of scraped surface heat exchanger (SSHE) makes use of a rotating shaft with blades or augers which scrape the floor of the tube. The well-liked HRS R Series relies on this strategy. However, the design is not optimum for every 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 right for viscous products similar to cream and tomato juice, in addition to products containing fruit items or particles.

The HRS Unicus Series is particularly designed to offer the improved warmth transfer of a traditional SSHE, however with a mild motion to preserve the standard and integrity of delicate food products similar to cheese, yoghurt, ice cream, meat paste, and products containing entire items of fruits or greens. Over the years, numerous totally different scraper designs have been developed, which means that each software, from processing curds to heating sauce or pasteurizing fruit compotes could be handled in the most environment friendly but mild means potential. Other purposes the place the Unicus Series has been useful embrace dealing with 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 inside every inside tube. The movement performs two key capabilities: it minimizes potential fouling by preserving the tube wall clear and likewise creates turbulence within the materials. Together, these actions enhance the speed of warmth transfer in the material, creating a highly efficient course of that is perfect for viscous and high fouling materials.
Since they’re managed separately, the pace of the scrapers could be optimized for a particular product being processed, in order that supplies that are prone to shear stress or stress harm (such as creams and custards) can be dealt with delicately to forestall harm while nonetheless providing excessive ranges of warmth transfer. The Unicus Series has confirmed particularly helpful in handling viscous food merchandise where texture and consistency are important attributes. For instance, some creams or sauces may shear when subjected to extra stress, making them unusable. The Unicus implies that effective warmth switch can 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 supplied instead), a separation chamber to ensure hygiene and protect product separation from the motor, and the heat exchanger itself. The heat exchanger consists of numerous tubes, each of which accommodates a stainless-steel rod to which the suitable scraping parts are fitted. Using a spread of food-safe supplies together with Teflon and PEEK (polyether ether ketone), these present different inside geometry setups based on the appliance, similar to 120-degree scrapers for big particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series is also absolutely scalable by increasing the shell diameter and including extra inside tubes from a single tube up to eighty in a single shell. A key characteristic is the specifically designed seals which separate the inner tube from the separation chamber, tailor-made to the product application. pressure gauge 10 bar stop leakage of the product and guarantee inside and exterior hygiene. A normal range of fashions for food processing provide warmth switch areas from 7 to 107 square feet, while larger models up to practically 1,300 sq. feet can be made for specific makes use of.

One area where the Unicus Series excels is in evaporation purposes, the place the prevention of fouling is particularly important. HRS has a selected version of the Unicus for use in evaporation units where quantity discount of the material is essential. The scraping action retains the warmth switch surfaces clean in order that Unicus evaporators can focus materials to a level that is unattainable utilizing traditional technologies. Unicus evaporators can be used in multi-effect setups or in combination 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 half of the HRS Group, which operates at the forefront of thermal expertise, providing progressive heat transfer solutions worldwide across a diverse range of industries. With forty years’ experience in the meals and beverage sector, specializing within the design and manufacture of an intensive vary of turnkey systems and parts, incorporating corrugated tubular, and scraped floor heat exchanger know-how, HRS items are compliant with world design and business standards.For more information, visit

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