Reciprocating Action Solves Tough Heat Exchange Challenges

Scraped surface heat exchangers have been used for tough heat transfer functions involving viscous fluids or where fouling is an issue, corresponding to evaporation processes. The commonest sort of scraped surface warmth exchanger (SSHE) makes use of a rotating shaft with blades or augers which scrape the surface of the tube. The well-liked HRS R Series is based 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 warmth exchangers.
The Unicus Series of reciprocating scraped floor warmth exchangers is good for viscous merchandise such as cream and tomato juice, in addition to merchandise containing fruit items or particles.
The HRS Unicus Series is particularly designed to provide the improved warmth switch of a traditional SSHE, however with a delicate motion to protect the standard and integrity of delicate food merchandise such as cheese, yoghurt, ice cream, meat paste, and merchandise containing whole pieces of fruits or vegetables. Over เกจวัดแรงดันไทวัสดุ , a number of different scraper designs have been developed, which means that every software, from processing curds to heating sauce or pasteurizing fruit compotes may be handled in the most environment friendly yet light means attainable. Other functions the place the Unicus Series has been beneficial include dealing with 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 inside each inside tube. The movement performs two key features: it minimizes potential fouling by keeping the tube wall clear and also creates turbulence throughout the material. Together, these actions enhance the speed of heat transfer within the materials, making a highly environment friendly course of that’s best for viscous and high fouling materials.
Since they are controlled individually, the velocity of the scrapers could be optimized for a particular product being processed, in order that materials that are susceptible to shear stress or pressure damage (such as creams and custards) can be handled delicately to forestall damage while nonetheless providing high ranges of warmth switch. The Unicus Series has confirmed notably useful in dealing with viscous food products the place texture and consistency are important attributes. For example, some lotions or sauces could shear when subjected to extra stress, making them unusable. The Unicus signifies that effective warmth switch can be carried out at low pressures which overcomes these issues.
Each Unicus SSHE consists of three components: a hydraulic cylinder and power pack (although in smaller items a pneumatic cylinder may be equipped instead), a separation chamber to make sure hygiene and protect product separation from the motor, and the warmth exchanger itself. The warmth exchanger consists of a number of tubes, each of which incorporates a stainless-steel rod to which the appropriate scraping elements are fitted. Using a variety of food-safe materials including Teflon and PEEK (polyether ether ketone), these provide different internal geometry setups based on the appliance, corresponding to 120-degree scrapers for large particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series can be absolutely scalable by increasing the shell diameter and adding more inside tubes from a single tube as a lot as eighty in a single shell. A key characteristic is the specifically designed seals which separate the inside tube from the separation chamber, tailor-made to the product software. These seals forestall leakage of the product and guarantee internal and exterior hygiene. A commonplace vary of models for food processing present heat transfer areas from 7 to 107 sq. toes, whereas larger models up to nearly 1,300 sq. feet could be made for particular uses.
One space where the Unicus Series excels is in evaporation functions, the place the prevention of fouling is particularly important. HRS has a particular version of the Unicus for use in evaporation items the place volume discount of the fabric is crucial. The scraping action keeps the warmth transfer surfaces clean so that Unicus evaporators can concentrate supplies to a stage that is unattainable using conventional applied sciences. Unicus evaporators can be used 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 on the forefront of thermal expertise, providing revolutionary heat switch options worldwide throughout a various range of industries. With forty years’ expertise within the meals and beverage sector, specializing in the design and manufacture of an in depth range of turnkey systems and parts, incorporating corrugated tubular, and scraped surface warmth exchanger expertise, HRS units are compliant with international design and industry requirements.For extra info, visit

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