Scraped surface warmth exchangers have been used for tough heat switch purposes involving viscous fluids or where fouling is an issue, corresponding to evaporation processes. The most common sort 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 based on this approach. However, the design just isn’t optimum for each state of affairs, and so HRS developed the Unicus Series of reciprocating scraped floor warmth exchangers.
The Unicus Series of reciprocating scraped floor warmth exchangers is good for viscous products corresponding to cream and tomato juice, as properly as merchandise containing fruit items or particles.
IT STARTS WITH DESIGN
The HRS Unicus Series is particularly designed to provide the improved warmth transfer of a conventional SSHE, however with a mild action to protect the standard and integrity of delicate food products corresponding to cheese, yoghurt, ice cream, meat paste, and merchandise containing whole items of fruits or greens. Over the years, numerous completely different scraper designs have been developed, meaning that each software, from processing curds to heating sauce or pasteurizing fruit compotes can be dealt with in probably the most environment friendly but light way attainable. Other functions the place the Unicus Series has been beneficial include handling meat slurry and mince, and processing yeast-malt extracts.
The hygienic design makes use of a patented stainless-steel scraping mechanism that strikes hydraulically forwards and backwards inside every interior tube. The motion performs two key capabilities: it minimizes potential fouling by maintaining the tube wall clear and also creates turbulence within the materials. Together, these actions enhance the rate of heat switch in the materials, creating a extremely efficient course of that’s best for viscous and high fouling materials.
Since they are managed individually, the pace of the scrapers could be optimized for a selected product being processed, in order that supplies which are prone to shear stress or pressure injury (such as creams and custards) can be handled delicately to forestall injury while nonetheless offering high ranges of warmth switch. The Unicus Series has confirmed significantly helpful in handling viscous food products the place texture and consistency are necessary attributes. For example, some creams or sauces might shear when subjected to excess strain, making them unusable. The Unicus signifies that effective warmth transfer can be carried out at low pressures which overcomes these problems.
HRS UNICUS SERIES UP CLOSE
Each Unicus SSHE consists of three elements: a hydraulic cylinder and energy pack (although in smaller units a pneumatic cylinder can be supplied instead), a separation chamber to ensure hygiene and protect product separation from the motor, and the heat exchanger itself. The heat exchanger consists of numerous tubes, every of which accommodates a stainless-steel rod to which the suitable scraping parts are fitted. Using a range of food-safe supplies including Teflon and PEEK (polyether ether ketone), these provide totally different inside geometry setups according to the appliance, similar to 120-degree scrapers for large particulates and 360-degree scrapers for viscous fluids with out particulates.
The Unicus Series can be totally scalable by growing the shell diameter and adding more inside tubes from a single tube as much as eighty in one shell. A key function is the specifically designed seals which separate the inner tube from the separation chamber, tailor-made to the product application. These seals stop leakage of the product and ensure inner and exterior hygiene. A standard vary of fashions for meals processing provide heat switch areas from 7 to 107 sq. feet, while larger fashions up to practically 1,300 square feet can be made for specific makes use of.
EXCELLENCE IN ACTION
One space the place the Unicus Series excels is in evaporation purposes, the place the prevention of fouling is especially necessary. HRS has a selected version of the Unicus to be used in evaporation items the place volume discount of the material is important. The scraping motion retains the warmth transfer surfaces clean so that Unicus evaporators can concentrate materials to a stage that is unattainable utilizing conventional applied sciences. Unicus evaporators can be used in multi-effect setups or together with mechanical vapor recompression.
Matt Hale is worldwide gross sales and marketing director for HRS Heat Exchangers. Located in เกจวัดแรงดันไฮดรอลิค , Georgia, HRS Heat Exchangers is a part of the HRS Group, which operates at the forefront of thermal expertise, providing revolutionary heat transfer options worldwide throughout a various vary of industries. With forty years’ experience in the food and beverage sector, specializing within the design and manufacture of an extensive range of turnkey techniques and elements, incorporating corrugated tubular, and scraped surface heat exchanger expertise, HRS items are compliant with world design and industry requirements.For more data, go to www.hrs-heatexchangers.com.
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