Scraped surface warmth exchangers have been used for difficult heat switch functions involving viscous fluids or the place fouling is an issue, similar to evaporation processes. The commonest sort of scraped surface heat exchanger (SSHE) uses a rotating shaft with blades or augers which scrape the surface of the tube. The in style HRS R Series is based on this method. However, the design just 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 ideal for viscous merchandise such as cream and tomato juice, as nicely as products containing fruit items or particles.
IT STARTS WITH DESIGN
The HRS Unicus Series is particularly designed to supply the improved warmth switch of a conventional SSHE, however with a gentle motion to preserve the standard and integrity of delicate meals merchandise corresponding to cheese, yoghurt, ice cream, meat paste, and products containing complete items of fruits or vegetables. Over the years, a selection of totally different scraper designs have been developed, that means that each utility, from processing curds to heating sauce or pasteurizing fruit compotes may be dealt with in the most environment friendly but light means possible. Other functions where the Unicus Series has been helpful embrace dealing with meat slurry and mince, and processing yeast-malt extracts.
The hygienic design uses 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 clean and also creates turbulence inside the materials. Together, these actions improve the speed of warmth transfer within the materials, creating a extremely efficient course of that’s perfect for viscous and high fouling supplies.
Since they are controlled individually, the pace of the scrapers can be optimized for a particular product being processed, so that supplies which are susceptible to shear stress or pressure damage (such as creams and custards) may be handled delicately to prevent harm while still providing excessive ranges of heat transfer. The Unicus Series has confirmed significantly useful in dealing with viscous food products where texture and consistency are essential attributes. For example, some creams or sauces could shear when subjected to excess pressure, making them unusable. ส่วนประกอบpressuregauge implies that effective warmth switch could be carried out at low pressures which overcomes these problems.
HRS UNICUS SERIES UP CLOSE
Each Unicus SSHE consists of three components: a hydraulic cylinder and energy pack (although in smaller items a pneumatic cylinder can be provided instead), a separation chamber to ensure hygiene and protect product separation from the motor, and the warmth exchanger itself. The warmth exchanger consists of a quantity of tubes, every of which contains a stainless-steel rod to which the suitable scraping elements are fitted. Using a range of food-safe supplies together with Teflon and PEEK (polyether ether ketone), these present completely different inside geometry setups in accordance with the appliance, such as 120-degree scrapers for large particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series can be absolutely scalable by growing the shell diameter and adding more interior tubes from a single tube up to eighty in a single shell. A key function is the specifically designed seals which separate the internal tube from the separation chamber, tailor-made to the product application. These seals stop leakage of the product and guarantee internal and exterior hygiene. A normal vary of models for meals processing present warmth switch areas from 7 to 107 sq. feet, while bigger models up to practically 1,300 square feet may be made for particular makes use of.
EXCELLENCE IN ACTION
One space the place the Unicus Series excels is in evaporation applications, the place the prevention of fouling is especially essential. HRS has a particular version of the Unicus for use in evaporation items the place quantity reduction of the material is crucial. The scraping action keeps the warmth switch surfaces clean in order that Unicus evaporators can focus supplies to a degree that’s unattainable using traditional technologies. Unicus evaporators can be used in multi-effect setups or in combination with mechanical vapor recompression.
Matt Hale is international sales and advertising director for HRS Heat Exchangers. Located in Atlanta, Georgia, HRS Heat Exchangers is a part of the HRS Group, which operates on the forefront of thermal technology, offering progressive warmth transfer solutions worldwide across a diverse vary of industries. With forty years’ experience within the meals and beverage sector, specializing within the design and manufacture of an extensive range of turnkey methods and parts, incorporating corrugated tubular, and scraped surface warmth exchanger expertise, HRS models are compliant with international design and industry requirements.For extra data, visit www.hrs-heatexchangers.com.
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