Heat exchanger with rotary scraper for high levels of mixing
The R Series heat exchanger from HRS Heat Exchangers, Marietta, Ga., uses a rotary scraper rod capable of reaching velocities of 300 rpm, providing high levels of shear and mixing at the heat transfer surface. This makes it particularly suitable for challenging heat transfer applications, such as those where the product has the potential to crystallize during processing or where aeration is required.
The scraper rod features both a helical mixing spiral (to reduce the pressure drop in the tube) and a series of scraper blades. Together, these provide a continuous scraping action that mixes highly viscous products and reduces fouling.
A unique gearbox design reduces noise and allows multiple tubes to be fitted inside a single shell from a single electrical drive.
Thanks to its helical spiral, in many applications the R Series can also be run in reverse, enabling valuable product to be recovered before routine cleaning or product changeover without the need for additional pigging or flushing systems.
The HRS R Series is available in 1 and 2 meters with 1-, 3- or 6-tube options. For larger installations, multiple units can be combined in series and units, and can be mounted horizontally or vertically. The R Series is suitable for a range of uses in the food processing industry, including heating, cooling, pasteurization, crystallization and evaporation.
HRS Heat Exchangers