Scraped floor warmth exchangers have been used for tough heat transfer functions involving viscous fluids or where fouling is an issue, corresponding to evaporation processes. เกจวัดแรงดันน้ำ of scraped floor heat exchanger (SSHE) makes use of a rotating shaft with blades or augers which scrape the floor of the tube. The in style HRS R Series is based on this method. However, the design isn’t optimal for each scenario, and so HRS developed the Unicus Series of reciprocating scraped surface heat exchangers.
The Unicus Series of reciprocating scraped floor warmth exchangers is good for viscous products such as cream and tomato juice, as well as merchandise containing fruit pieces or particles.
IT STARTS WITH DESIGN
The HRS Unicus Series is specifically designed to provide the improved heat switch of a standard SSHE, but with a mild motion to protect the quality and integrity of delicate meals products corresponding to cheese, yoghurt, ice cream, meat paste, and merchandise containing entire items of fruits or vegetables. Over the years, a quantity of completely different scraper designs have been developed, meaning that every utility, from processing curds to heating sauce or pasteurizing fruit compotes could be dealt with in probably the most environment friendly yet light way attainable. Other applications the place the Unicus Series has been beneficial embody 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 inside every inside tube. The movement performs two key capabilities: it minimizes potential fouling by maintaining the tube wall clean and also creates turbulence inside the materials. Together, these actions enhance the rate of warmth switch in the materials, creating a highly environment friendly course of that’s best for viscous and high fouling supplies.
Since they are managed separately, the velocity of the scrapers could be optimized for a selected product being processed, in order that materials that are susceptible to shear stress or strain damage (such as creams and custards) can be handled delicately to stop harm while nonetheless providing excessive ranges of heat transfer. The Unicus Series has confirmed significantly useful in handling viscous meals merchandise the place texture and consistency are important attributes. For example, some creams or sauces may shear when subjected to excess stress, making them unusable. The Unicus implies that effective heat switch may be carried out at low pressures which overcomes these issues.
HRS UNICUS SERIES UP CLOSE
Each Unicus SSHE consists of three elements: a hydraulic cylinder and energy pack (although in smaller models a pneumatic cylinder may be supplied instead), a separation chamber to ensure hygiene and protect product separation from the motor, and the warmth exchanger itself. The heat exchanger consists of numerous tubes, each of which incorporates a stainless-steel rod to which the appropriate scraping components are fitted. Using a range of food-safe materials together with Teflon and PEEK (polyether ether ketone), these present totally different internal geometry setups in accordance with the application, corresponding to 120-degree scrapers for large particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series can additionally be fully scalable by increasing the shell diameter and including more interior tubes from a single tube as much as eighty in a single shell. A key characteristic is the specially designed seals which separate the inner tube from the separation chamber, tailor-made to the product utility. These seals prevent leakage of the product and guarantee inside and exterior hygiene. A standard range of fashions for meals processing provide heat switch areas from 7 to 107 square feet, while bigger fashions as a lot as practically 1,300 square ft can be made for specific makes use of.
EXCELLENCE IN ACTION
One space where the Unicus Series excels is in evaporation functions, where the prevention of fouling is especially necessary. HRS has a selected model of the Unicus for use in evaporation items where volume reduction of the fabric is essential. The scraping motion retains the warmth switch surfaces clean so that Unicus evaporators can focus materials to a degree that’s unattainable using traditional applied sciences. Unicus evaporators can be utilized in multi-effect setups or together with mechanical vapor recompression.
Matt Hale is international sales and marketing 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, offering revolutionary warmth transfer options worldwide across a diverse vary of industries. With forty years’ experience in the food and beverage sector, specializing within the design and manufacture of an in depth range of turnkey techniques and components, incorporating corrugated tubular, and scraped surface warmth exchanger expertise, HRS models are compliant with global design and industry requirements.For more information, go to www.hrs-heatexchangers.com.
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