Scraped surface heat exchangers have been used for tough warmth switch purposes involving viscous fluids or the place fouling is an issue, such as evaporation processes. The most typical type 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 relies on this approach. However, the design is not optimal for every state of affairs, and so HRS developed the Unicus Series of reciprocating scraped floor heat exchangers.
The Unicus Series of reciprocating scraped surface heat exchangers is good for viscous products similar to cream and tomato juice, as well as products containing fruit items or particles.
pressure gauge น้ำ is particularly designed to offer the improved heat transfer of a standard SSHE, however with a mild action to preserve the quality and integrity of delicate food merchandise corresponding to cheese, yoghurt, ice cream, meat paste, and merchandise containing complete items of fruits or vegetables. Over the years, numerous totally different scraper designs have been developed, which means that each software, from processing curds to heating sauce or pasteurizing fruit compotes can be dealt with in the most efficient but light method possible. Other applications the place the Unicus Series has been beneficial include dealing with meat slurry and mince, and processing yeast-malt extracts.
The hygienic design makes use of a patented stainless-steel scraping mechanism that strikes hydraulically backwards and forwards within each interior tube. The motion performs two key capabilities: it minimizes potential fouling by preserving the tube wall clean and in addition creates turbulence inside the material. Together, these actions enhance the speed of heat transfer in the material, creating a extremely environment friendly process that is perfect for viscous and excessive fouling supplies.
Since they’re managed individually, the velocity of the scrapers can be optimized for a specific product being processed, in order that supplies that are prone to shear stress or stress damage (such as creams and custards) may be dealt with delicately to forestall damage while still providing excessive ranges of warmth switch. The Unicus Series has proven particularly helpful in dealing with viscous food products where texture and consistency are essential attributes. For instance, some lotions or sauces might shear when subjected to extra pressure, making them unusable. The Unicus means that efficient warmth switch can be carried out at low pressures which overcomes these issues.
HRS UNICUS SERIES UP CLOSE
Each Unicus SSHE consists of three parts: 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, each of which accommodates a stainless-steel rod to which the appropriate scraping parts are fitted. Using a spread of food-safe materials together with Teflon and PEEK (polyether ether ketone), these provide completely different inner geometry setups in accordance with the application, similar to 120-degree scrapers for giant particulates and 360-degree scrapers for viscous fluids with out particulates.
The Unicus Series can be totally scalable by increasing the shell diameter and adding more inside tubes from a single tube up to eighty in one shell. A key function is the specially designed seals which separate the internal tube from the separation chamber, tailor-made to the product utility. These seals prevent leakage of the product and guarantee inner and exterior hygiene. A normal vary of models for meals processing present warmth switch areas from 7 to 107 sq. ft, whereas bigger models up to practically 1,300 sq. toes could be made for particular makes use of.
EXCELLENCE IN ACTION
One space the place the Unicus Series excels is in evaporation functions, where the prevention of fouling is particularly necessary. HRS has a selected version of the Unicus for use in evaporation models the place volume discount of the fabric is important. The scraping motion retains the heat transfer surfaces clear so that Unicus evaporators can concentrate supplies to a degree that is unattainable utilizing traditional applied sciences. Unicus evaporators can be used in multi-effect setups or in combination with mechanical vapor recompression.
Matt Hale is worldwide gross sales and marketing 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, offering revolutionary heat transfer solutions worldwide throughout a diverse range of industries. With forty years’ expertise in the food and beverage sector, specializing in the design and manufacture of an in depth range of turnkey methods and parts, incorporating corrugated tubular, and scraped surface heat exchanger expertise, HRS units are compliant with global design and business standards.For extra info, visit www.hrs-heatexchangers.com.
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