Scraped floor heat exchangers have been used for tough heat transfer applications involving viscous fluids or where fouling is an issue, similar to evaporation processes. The commonest sort of scraped surface 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 is based on this approach. However, the design is not optimum for every scenario, and so HRS developed the Unicus Series of reciprocating scraped floor warmth exchangers.
The Unicus Series of reciprocating scraped surface warmth exchangers is good for viscous products corresponding to cream and tomato juice, in addition to merchandise containing fruit pieces or particles.
IT STARTS WITH DESIGN
The HRS Unicus Series is specifically designed to supply the improved heat switch of a standard SSHE, but with a delicate motion to preserve the quality and integrity of delicate food products similar to cheese, yoghurt, ice cream, meat paste, and merchandise containing whole pieces of fruits or vegetables. Over the years, numerous totally different scraper designs have been developed, meaning that every utility, from processing curds to heating sauce or pasteurizing fruit compotes may be handled in the most efficient but mild way potential. Other applications the place the Unicus Series has been helpful include handling 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 interior tube. The motion performs two key capabilities: it minimizes potential fouling by keeping the tube wall clean and in addition creates turbulence inside the materials. Together, these actions improve the speed of heat transfer in the material, making a extremely efficient course of that’s perfect for viscous and high fouling supplies.
Since they’re controlled individually, the pace of the scrapers may be optimized for a selected product being processed, in order that materials which are susceptible to shear stress or stress injury (such as creams and custards) can be handled delicately to forestall injury while still providing high levels of warmth switch. The Unicus Series has confirmed notably helpful in dealing with viscous meals products where texture and consistency are important attributes. For instance, some creams or sauces might shear when subjected to excess stress, making them unusable. The Unicus means that effective heat switch could be carried out at low pressures which overcomes these issues.
HRS UNICUS SERIES UP CLOSE
Each Unicus SSHE consists of three components: a hydraulic cylinder and power pack (although in smaller models a pneumatic cylinder could be supplied instead), a separation chamber to make sure hygiene and protect product separation from the motor, and the warmth exchanger itself. The heat exchanger consists of numerous tubes, each of which contains a stainless-steel rod to which the appropriate scraping elements are fitted. Using a variety of food-safe materials together with Teflon and PEEK (polyether ether ketone), these present different inside geometry setups based on the application, similar to 120-degree scrapers for big particulates and 360-degree scrapers for viscous fluids with out particulates.
The Unicus Series can be fully scalable by rising the shell diameter and adding extra interior tubes from a single tube up to eighty in a single shell. A key feature is the specifically designed seals which separate the inner tube from the separation chamber, tailored to the product software. เครื่องมือใช้วัดความดัน prevent leakage of the product and ensure inside and external hygiene. A normal range of models for meals processing present warmth transfer areas from 7 to 107 square feet, while larger models as a lot as nearly 1,300 sq. feet can be made for specific makes use of.
EXCELLENCE IN ACTION
One area where the Unicus Series excels is in evaporation applications, where the prevention of fouling is especially necessary. HRS has a particular model of the Unicus for use in evaporation models where quantity reduction of the material is essential. The scraping action retains the warmth switch surfaces clear so that Unicus evaporators can focus supplies to a stage that’s unattainable utilizing conventional applied sciences. Unicus evaporators 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 a half of the HRS Group, which operates on the forefront of thermal know-how, offering revolutionary warmth switch solutions worldwide throughout a diverse range of industries. With forty years’ experience in the food and beverage sector, specializing in the design and manufacture of an intensive range of turnkey techniques and components, incorporating corrugated tubular, and scraped surface warmth exchanger technology, HRS units are compliant with world design and industry requirements.For extra data, visit www.hrs-heatexchangers.com.
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