Abstract
AbstractComputer‐aided studies, comprising computational fluid dynamics and heat transfer models, were used to simulate continuous flow cooling of viscous foods. Initially, model validation studies were conducted, giving a good correlation between simulation results and experimental data on cooling of sweet potato puree. Additional computer‐aided studies were performed to compare cooling efficiency of two different flow configurations, with the product flowing within the inner tube and the annulus of a tube‐in‐tube heat exchanger, respectively. Cooling of sweet potato puree was significantly improved for the annular product flow compared with the other case, resulting in a bulk temperature at the exit of the heat exchanger lower by 12 ± 4 °C. Therefore, the simulation results indicate that annular product flow could potentially improve cooling efficiency by 25% for sweet potato puree, due to the increased heat transfer to the environment.Practical applicationsDuring cooling of viscous foods, such as fruit and vegetable purees, laminar flow, and low thermal conductivity lead to a nonuniform, slow cooling process resulting in degradation of food quality. Improvement and optimization of the cooling process in a tube‐in‐tube heat exchanger, with an implementation of annular flow for the product, could potentially result in (1) enhancement of cooling efficiency, (2) reduction of cooling‐related product quality losses, and (3) improvement of sanitary conditions, by eliminating condensation formation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.