»
Cover Story
fer applications industry and became experts in their customers ’ unique requirements , the company realised the need for a rotary scraped surface heat exchanger . They developed the R series based on a classic industry standard tube in tube heat exchanger , which introduced a rotary scraping rod . In addition , to ensure a high transfer area , HRS R Series is available as a multitube . To support the multitube design of their scraped heat exchangers , HRS engineered a unique gearbox system , which transfers the energy of a single electrical motor to the scraper rods in each individual tube . Reaching up to 300 rpm in velocity , the R series dramatically increases the heat transfer area compared to the Unicus series , making it a perfect solution for especially viscous products . Another big advantage of applying HRS scraped heat exchangers is thermal treatment time . “ When you have especially difficult products , you need to heat them to the pasteurisation temperature then cool them as quickly as possible . The shorter this period , the better the quality of the food . As a result , you get a higher value-added product ,” says Arnold . of the Unicus series of scraped heat exchangers . “ Traditionally , the scraped surface heat exchanger is built with only one tube on the inside , which makes it very limited in surface area . However , we found a way to make a multitube system . So instead of 1 or 2 square meters per heat exchange of heat transfer area , we were able to increase this to 5 , 10 , or 15 square meters ,” says Arnold . “ Over time , heat exchangers became bigger ,” continues Arnold . “ Instead of 7 , 12 , or 15 tubes inside , we can now manufacture them with 80 tubes . There are not many companies in the world that can deliver such large amounts of heat transfer area , which really opens a niche market for us .” The Unicus series works in a back-andforth way , ensuring hygienic applications while keeping heat transfer high and reducing downtime . The scrapers inside of the heat exchanger work gently to protect the food integrity . “ With the Unicus series heat exchanger , whatever product comes in at one end comes out the other end looking the same without being damaged in any way ,” points out Matt .
Rotary scraped heat exchanger The Unicus series of scraped heat exchangers was the origin of the company , but they didn ’ t stop there . As HRS gained more experience within the food
Adapting to trends “ Energy efficiency is a key focus for us ,” begins Matt . “ You can heat or cool viscous products more effectively with the scraped surface , which saves energy . We ’ re driven by the environment , energy saving , and energy recovery . We ’ ve become experts in these fields and are ready to face the challenge .” HRS Heat Exchangers enforce their 40 years of experience in thermal management by providing evaporation systems as an integral part of their services . With a wide range of heat exchangers tuned for evaporation processes , the company is able to help to select the exact right solution based on a customer ’ s every demand .
Complete processing plant – HRS produce more than just heat exchangers .
www . heat-exchanger-world . com Heat Exchanger World April 2024 9