Scraped surface warmth exchangers have been used for troublesome warmth switch purposes involving viscous fluids or where fouling is an issue, similar to evaporation processes. The most typical type of scraped floor heat exchanger (SSHE) makes use of a rotating shaft with blades or augers which scrape the floor of the tube. The popular HRS R Series relies on this approach. However, the design isn’t optimum for each situation, and so HRS developed the Unicus Series of reciprocating scraped floor heat exchangers.
The Unicus Series of reciprocating scraped floor warmth exchangers is good for viscous merchandise similar to cream and tomato juice, as well as products containing fruit pieces or particles.
The HRS Unicus Series is particularly designed to provide the improved heat transfer of a traditional SSHE, however with a delicate motion to protect the quality and integrity of delicate meals products such as cheese, yoghurt, ice cream, meat paste, and products containing entire items of fruits or greens. Over the years, a variety of totally different scraper designs have been developed, meaning that each software, from processing curds to heating sauce or pasteurizing fruit compotes could be dealt with in essentially the most efficient but light way possible. Other applications the place the Unicus Series has been beneficial include handling meat slurry and mince, and processing yeast-malt extracts.
The hygienic design uses a patented stainless-steel scraping mechanism that moves hydraulically back and forth within each interior tube. The movement performs two key functions: it minimizes potential fouling by preserving the tube wall clean and likewise creates turbulence within the materials. Together, these actions increase the speed of heat switch within the material, making a extremely efficient course of that is ideal for viscous and excessive fouling materials.
Since they’re controlled separately, the pace of the scrapers could be optimized for a specific product being processed, in order that materials that are vulnerable to shear stress or strain harm (such as lotions and custards) may be handled delicately to prevent harm while nonetheless providing high levels of warmth switch. The Unicus Series has confirmed particularly helpful in dealing with viscous meals merchandise the place texture and consistency are important attributes. For example, some lotions or sauces might shear when subjected to excess stress, making them unusable. The Unicus implies that effective heat transfer could be carried out at low pressures which overcomes these problems.
Each Unicus SSHE consists of three elements: a hydraulic cylinder and power pack (although in smaller models a pneumatic cylinder can be equipped 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 variety of tubes, each of which incorporates a stainless-steel rod to which the appropriate scraping components are fitted. Using a range of food-safe supplies together with Teflon and PEEK (polyether ether ketone), these present totally different inside 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 is also totally scalable by rising the shell diameter and adding more inside tubes from a single tube as much as eighty in a single shell. A key function is the specifically designed seals which separate the internal 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 standard range of models for food processing provide warmth transfer areas from 7 to 107 sq. toes, while larger models as much as nearly 1,300 sq. toes may be made for particular makes use of.
เกจวัดแรงดันเชื้อเพลิง where the Unicus Series excels is in evaporation functions, the place the prevention of fouling is particularly necessary. HRS has a selected version of the Unicus for use in evaporation units where quantity discount of the fabric is essential. The scraping action retains the heat transfer surfaces clear so that Unicus evaporators can focus materials to a degree that is unattainable utilizing traditional applied sciences. Unicus evaporators can be utilized 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 part of the HRS Group, which operates at the forefront of thermal expertise, providing progressive heat transfer solutions worldwide across a various vary of industries. With forty years’ expertise within the meals and beverage sector, specializing in the design and manufacture of an extensive vary of turnkey systems and parts, incorporating corrugated tubular, and scraped floor heat exchanger technology, HRS items are compliant with international design and trade requirements.For more data, visit