Scraped surface warmth exchangers have been used for troublesome heat transfer purposes involving viscous fluids or the place fouling is a matter, such as evaporation processes. The most typical sort of scraped floor warmth exchanger (SSHE) makes use of a rotating shaft with blades or augers which scrape the floor of the tube. The in style HRS R Series is predicated on this strategy. However, เกจวัดแรงดันpressuregauge isn’t optimum for each state of affairs, and so HRS developed the Unicus Series of reciprocating scraped surface warmth exchangers.
The Unicus Series of reciprocating scraped surface heat exchangers is good for viscous products corresponding to cream and tomato juice, in addition to products containing fruit pieces or particles.
The HRS Unicus Series is particularly designed to supply the improved warmth switch of a traditional SSHE, however with a gentle action to preserve the standard and integrity of delicate meals merchandise corresponding to cheese, yoghurt, ice cream, meat paste, and products containing whole items of fruits or greens. Over the years, a variety of completely different scraper designs have been developed, meaning that each utility, from processing curds to heating sauce or pasteurizing fruit compotes may be handled in probably the most efficient yet light method attainable. Other purposes the place the Unicus Series has been helpful embrace 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 back and forth within each interior tube. The motion performs two key capabilities: it minimizes potential fouling by maintaining the tube wall clear and in addition creates turbulence within the materials. Together, these actions increase the speed of heat transfer in the materials, creating a extremely efficient process that is ideal for viscous and excessive fouling supplies.
Since they are managed separately, the speed of the scrapers may be optimized for a particular product being processed, in order that materials that are susceptible to shear stress or stress damage (such as creams and custards) could be dealt with delicately to prevent damage whereas nonetheless providing excessive levels of warmth switch. The Unicus Series has proven significantly helpful in handling viscous food merchandise the place texture and consistency are necessary attributes. For example, some lotions or sauces might shear when subjected to excess strain, making them unusable. The Unicus implies that effective warmth switch can be carried out at low pressures which overcomes these issues.
Each Unicus SSHE consists of three parts: a hydraulic cylinder and energy pack (although in smaller models a pneumatic cylinder may be equipped instead), a separation chamber to make sure hygiene and preserve product separation from the motor, and the warmth exchanger itself. The heat exchanger consists of a variety of tubes, every of which incorporates a stainless-steel rod to which the suitable scraping components are fitted. Using a variety of food-safe supplies together with Teflon and PEEK (polyether ether ketone), these provide different inside geometry setups based on the appliance, such as 120-degree scrapers for big particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series can additionally be absolutely scalable by rising the shell diameter and including extra interior tubes from a single tube up to eighty in a single shell. A key characteristic is the specially designed seals which separate the internal tube from the separation chamber, tailored to the product application. These seals forestall leakage of the product and ensure inside and external hygiene. A standard range of models for meals processing provide warmth transfer areas from 7 to 107 square ft, whereas larger models up to almost 1,300 square toes may be made for particular uses.
One area the place the Unicus Series excels is in evaporation functions, the place the prevention of fouling is particularly essential. HRS has a selected version of the Unicus to be used in evaporation items the place volume discount of the fabric is crucial. The scraping action keeps the warmth transfer surfaces clean in order that Unicus evaporators can focus materials 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 sales and advertising director for HRS Heat Exchangers. Located in Atlanta, Georgia, HRS Heat Exchangers is a part of the HRS Group, which operates at the forefront of thermal technology, providing innovative warmth transfer options worldwide throughout a various range of industries. With forty years’ expertise in the meals and beverage sector, specializing within the design and manufacture of an intensive vary of turnkey techniques and elements, incorporating corrugated tubular, and scraped surface warmth exchanger technology, HRS items are compliant with world design and trade standards.For extra data, visit