Reciprocating Action Solves Tough Heat Exchange Challenges

Scraped surface heat exchangers have been used for tough warmth transfer functions involving viscous fluids or the place fouling is an issue, corresponding to evaporation processes. The commonest kind of scraped floor warmth exchanger (SSHE) makes use of 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 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 surface heat exchangers is good for viscous products similar to cream and tomato juice, as properly as products containing fruit items or particles.
The HRS Unicus Series is particularly designed to provide the improved warmth transfer of a standard SSHE, however with a delicate action to preserve the quality and integrity of delicate meals products such as cheese, yoghurt, ice cream, meat paste, and merchandise containing complete items of fruits or greens. Over the years, a quantity of totally different scraper designs have been developed, that means that each application, from processing curds to heating sauce or pasteurizing fruit compotes can be dealt with in the most efficient but gentle way potential. Other applications the place the Unicus Series has been beneficial embody dealing with meat slurry and mince, and processing yeast-malt extracts.
The hygienic design uses a patented stainless-steel scraping mechanism that moves hydraulically backwards and forwards inside every inside tube. The motion performs two key features: it minimizes potential fouling by maintaining the tube wall clean and in addition creates turbulence inside the materials. Together, these actions enhance the rate of warmth transfer in the material, making a extremely efficient process that is best for viscous and excessive fouling supplies.
Since they are managed individually, the velocity of the scrapers could be optimized for a particular product being processed, in order that supplies which are prone to shear stress or stress injury (such as lotions and custards) could be handled delicately to prevent harm whereas still offering excessive levels of warmth transfer. The Unicus Series has confirmed particularly useful in dealing with viscous food products the place texture and consistency are necessary attributes. For instance, some lotions or sauces might shear when subjected to extra strain, making them unusable. The Unicus signifies that efficient warmth switch may be carried out at low pressures which overcomes these problems.
Each Unicus SSHE consists of three elements: a hydraulic cylinder and energy pack (although in smaller items a pneumatic cylinder can be supplied instead), a separation chamber to ensure hygiene and preserve product separation from the motor, and the heat exchanger itself. The warmth exchanger consists of numerous tubes, every 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 provide completely different inner geometry setups according to the appliance, corresponding to 120-degree scrapers for big particulates and 360-degree scrapers for viscous fluids without particulates.
The Unicus Series is also absolutely scalable by increasing the shell diameter and adding extra inside tubes from a single tube as a lot as eighty in one shell. A key feature is the specifically designed seals which separate the inner tube from the separation chamber, tailored to the product software. เกจไนโตรเจนsumo forestall leakage of the product and ensure inner and external hygiene. A normal range of models for meals processing present warmth transfer areas from 7 to 107 square ft, while larger fashions as much as nearly 1,300 sq. ft can be made for specific uses.
One space where the Unicus Series excels is in evaporation purposes, the place the prevention of fouling is especially essential. HRS has a selected model of the Unicus for use in evaporation items where volume discount of the material is important. The scraping action keeps the heat transfer surfaces clean so that Unicus evaporators can focus supplies to a level that is unattainable utilizing traditional applied sciences. Unicus evaporators can be used in multi-effect setups or together 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 half of the HRS Group, which operates on the forefront of thermal technology, providing revolutionary heat switch solutions worldwide across a diverse range of industries. With forty years’ experience in the food and beverage sector, specializing within the design and manufacture of an intensive range of turnkey systems and elements, incorporating corrugated tubular, and scraped surface warmth exchanger technology, HRS units are compliant with world design and trade requirements.For more data, go to