Reciprocating Action Solves Tough Heat Exchange Challenges

Scraped floor warmth exchangers have been used for troublesome heat transfer applications involving viscous fluids or the place 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 floor of the tube. The popular HRS R Series is predicated on this approach. However, the design is not optimal for each scenario, and so HRS developed the Unicus Series of reciprocating scraped floor warmth exchangers.
The Unicus Series of reciprocating scraped surface warmth exchangers is good for viscous products corresponding to cream and tomato juice, in addition to products containing fruit items or particles.
The HRS Unicus Series is specifically designed to offer the improved heat switch of a conventional SSHE, however with a delicate action to protect the quality and integrity of delicate food products corresponding to cheese, yoghurt, ice cream, meat paste, and products containing entire items of fruits or vegetables. 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 may be handled in the most environment friendly but mild way potential. Other applications where the Unicus Series has been useful embody handling meat slurry and mince, and processing yeast-malt extracts.
The hygienic design uses a patented stainless-steel scraping mechanism that strikes hydraulically back and forth within every interior tube. The movement performs two key features: it minimizes potential fouling by keeping the tube wall clear and likewise creates turbulence inside the material. Together, these actions enhance the rate of warmth switch within the materials, making a extremely efficient process that is ideal for viscous and high fouling supplies.
Since they are controlled individually, the velocity of the scrapers could be optimized for a selected product being processed, in order that materials that are vulnerable to shear stress or pressure damage (such as lotions and custards) can be handled delicately to stop damage while nonetheless offering high levels of heat transfer. The Unicus Series has proven particularly useful in dealing with viscous food merchandise the place texture and consistency are essential attributes. For instance, some creams or sauces could shear when subjected to extra strain, making them unusable. The Unicus means that efficient warmth transfer 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 items a pneumatic cylinder could 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 number of tubes, each of which accommodates a stainless-steel rod to which the appropriate scraping parts are fitted. Using Results of food-safe supplies together with Teflon and PEEK (polyether ether ketone), these present different internal geometry setups according to the application, such as 120-degree scrapers for giant particulates and 360-degree scrapers for viscous fluids with out particulates.
The Unicus Series can be absolutely scalable by increasing the shell diameter and including extra interior tubes from a single tube as a lot as eighty in one shell. A key characteristic is the specifically designed seals which separate the internal tube from the separation chamber, tailor-made to the product utility. These seals forestall leakage of the product and ensure inside and exterior hygiene. A commonplace vary of models for food processing provide heat transfer areas from 7 to 107 square toes, whereas larger models up to practically 1,300 sq. toes can be made for particular makes use of.
One space the place the Unicus Series excels is in evaporation functions, where the prevention of fouling is especially important. HRS has Efficient of the Unicus for use in evaporation models the place volume discount of the fabric is crucial. The scraping motion retains the heat transfer surfaces clean in order that Unicus evaporators can concentrate supplies to a stage that is unattainable utilizing conventional technologies. Unicus evaporators can be used in multi-effect setups or in combination 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 a part of the HRS Group, which operates on the forefront of thermal know-how, providing innovative heat switch solutions worldwide throughout a diverse range of industries. With forty years’ experience within the meals and beverage sector, specializing within the design and manufacture of an in depth vary of turnkey systems and parts, incorporating corrugated tubular, and scraped floor warmth exchanger expertise, HRS models are compliant with international design and business standards.For more data, go to

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