Reciprocating Action Solves Tough Heat Exchange Challenges

Scraped surface heat exchangers have been used for difficult heat switch applications involving viscous fluids or where fouling is an issue, similar to evaporation processes. The most common kind of scraped floor heat 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 approach. However, the design isn’t optimal for every scenario, and so HRS developed the Unicus Series of reciprocating scraped floor warmth exchangers.
The Unicus Series of reciprocating scraped floor heat exchangers is right for viscous products similar to cream and tomato juice, as nicely as merchandise containing fruit pieces or particles.
The HRS Unicus Series is particularly designed to provide the improved heat transfer of a standard SSHE, but with a mild motion to preserve the quality and integrity of delicate meals products corresponding to cheese, yoghurt, ice cream, meat paste, and products containing entire items of fruits or greens. Over เกจวัดแรงดันco2 , numerous completely different scraper designs have been developed, meaning that every utility, from processing curds to heating sauce or pasteurizing fruit compotes could be handled in essentially the most efficient but light means possible. Other functions where the Unicus Series has been useful embrace dealing with 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 within each inside tube. The movement performs two key capabilities: it minimizes potential fouling by keeping the tube wall clear and also creates turbulence inside the materials. Together, these actions increase the rate of heat transfer within the material, creating a highly environment friendly process that is ideal for viscous and high fouling materials.
Since they are managed individually, the speed of the scrapers can be optimized for a particular product being processed, so that supplies which are prone to shear stress or stress harm (such as lotions and custards) can be handled delicately to forestall injury while still offering excessive ranges of warmth transfer. The Unicus Series has confirmed notably helpful in dealing with viscous food merchandise the place texture and consistency are necessary attributes. For example, some lotions or sauces may shear when subjected to excess strain, making them unusable. The Unicus implies that effective warmth switch could be carried out at low pressures which overcomes these issues.
Each Unicus SSHE consists of three elements: a hydraulic cylinder and energy pack (although in smaller units a pneumatic cylinder could be provided instead), a separation chamber to ensure hygiene and preserve product separation from the motor, and the heat exchanger itself. The heat exchanger consists of a variety of tubes, every of which accommodates 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 provide totally different internal geometry setups according to the appliance, such as 120-degree scrapers for big particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series can also be 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 feature is the specially designed seals which separate the inside tube from the separation chamber, tailor-made to the product application. These seals forestall leakage of the product and ensure inside and external hygiene. A commonplace range of models for meals processing provide heat switch areas from 7 to 107 square ft, whereas larger fashions up to nearly 1,300 sq. feet could be made for particular uses.
One space the place the Unicus Series excels is in evaporation applications, where the prevention of fouling is especially necessary. HRS has a selected version of the Unicus for use in evaporation items the place quantity discount of the fabric is essential. The scraping motion retains the heat switch surfaces clear in order that Unicus evaporators can concentrate supplies to a degree that is unattainable utilizing traditional applied sciences. Unicus evaporators can be utilized in multi-effect setups or together with mechanical vapor recompression.
Matt Hale is worldwide 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 know-how, offering innovative heat transfer options worldwide across a various range of industries. With forty years’ expertise in the food and beverage sector, specializing within the design and manufacture of an extensive vary of turnkey methods and components, incorporating corrugated tubular, and scraped floor heat exchanger technology, HRS units are compliant with global design and business requirements.For extra information, go to

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