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Scraped surface warmth exchangers have been used for troublesome warmth transfer functions involving viscous fluids or where fouling is an issue, similar to evaporation processes. The most typical type of scraped surface warmth exchanger (SSHE) uses 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 just isn’t optimal for every scenario, and so HRS developed the Unicus Series of reciprocating scraped floor heat exchangers.
The Unicus Series of reciprocating scraped surface warmth exchangers is ideal 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 provide the improved warmth transfer of a conventional SSHE, however with a gentle motion to protect the standard and integrity of delicate food products such as cheese, yoghurt, ice cream, meat paste, and merchandise containing complete pieces of fruits or greens. Over the years, a quantity of totally different scraper designs have been developed, that means that every software, from processing curds to heating sauce or pasteurizing fruit compotes can be dealt with in the most environment friendly but gentle means attainable. Other functions the place the Unicus Series has been helpful include dealing with meat slurry and mince, and processing yeast-malt extracts.
The hygienic design uses a patented stainless-steel scraping mechanism that moves hydraulically backwards and forwards inside each inside tube. The movement performs two key functions: it minimizes potential fouling by maintaining the tube wall clear and likewise creates turbulence inside the material. Together, these actions increase the rate of heat switch within the material, making a highly environment friendly process that is perfect for viscous and excessive fouling materials.
Since they’re controlled individually, the speed of the scrapers may be optimized for a particular product being processed, so that materials that are vulnerable to shear stress or strain damage (such as lotions and custards) can be handled delicately to prevent damage whereas still providing excessive levels of heat switch. The Unicus Series has proven notably helpful in dealing with viscous meals products where texture and consistency are necessary attributes. For example, some lotions or sauces might shear when subjected to extra pressure, making them unusable. The Unicus means that effective heat transfer can be carried out at low pressures which overcomes these issues.
Each Unicus SSHE consists of three elements: a hydraulic cylinder and power pack (although in smaller models a pneumatic cylinder could be equipped instead), a separation chamber to make sure hygiene and protect product separation from the motor, and the heat exchanger itself. pressure gauge หลักการ ทํา งาน consists of numerous tubes, every of which contains a stainless-steel rod to which the suitable scraping elements are fitted. Using a spread of food-safe materials including Teflon and PEEK (polyether ether ketone), these present different inside geometry setups based on the application, similar to 120-degree scrapers for large particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series is also fully scalable by increasing the shell diameter and adding extra inside tubes from a single tube as much as eighty in one shell. A key function is the specifically designed seals which separate the inside tube from the separation chamber, tailored to the product software. These seals prevent leakage of the product and guarantee inside and external hygiene. A standard vary of models for food processing present heat transfer areas from 7 to 107 sq. feet, while larger models up to nearly 1,300 sq. ft could be made for specific uses.
One area the place the Unicus Series excels is in evaporation purposes, where the prevention of fouling is especially essential. HRS has a specific version of the Unicus for use in evaporation units where volume discount of the material is important. The scraping motion keeps the heat transfer surfaces clean in order that Unicus evaporators can focus supplies to a level that is unattainable using conventional technologies. เครื่องมือวัดความดันคือ can be utilized in multi-effect setups or in combination with mechanical vapor recompression.
Matt Hale is worldwide gross sales and advertising director for HRS Heat Exchangers. Located in Atlanta, Georgia, HRS Heat Exchangers is part of the HRS Group, which operates on the forefront of thermal know-how, providing revolutionary heat transfer solutions worldwide throughout a diverse vary of industries. With forty years’ experience within the meals and beverage sector, specializing in the design and manufacture of an extensive range of turnkey systems and components, incorporating corrugated tubular, and scraped floor warmth exchanger expertise, HRS models are compliant with global design and business standards.For extra info, go to

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