Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6664617 | Journal of Food Engineering | 2018 | 29 Pages |
Abstract
Usually, the thermophysical parameters of bananas available in the literature refer to the flesh of the product. However, to prolong the shelf life avoiding injuries, product cooling should be performed for bananas with peel (from room temperature to 13â¯Â°C). Thus, the main objective of this article was to determine thermal properties of banana with peel during its cooling. A solver was developed for the direct problem, using a two-dimensional solution of the diffusion equation to describe heat transfer. For the inverse problem, we used an experimental dataset of the temperature over time at the center of a banana, and a ready-to-use optimizer software. Convective heat transfer coefficient and thermal diffusivity were h = (2.186â¯Â±â¯0.021)â¯Ãâ¯10â6â¯mâ¯sâ1 and α = (1.45â¯Â±â¯0.06)â¯Ãâ¯10â7â¯m2â¯sâ1, respectively. Heat transfer coefficient and thermal conductivity were hH = (4.93â¯Â±â¯0.05) W mâ2 Kâ1 and k = (0.328â¯Â±â¯0.014) W mâ1 Kâ1, respectively. The chi-square and determination coefficient of the optimization process were 3.5484â¯Ãâ¯10â2 and 0.999955, respectively.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Wilton Pereira da Silva, Cleide Maria D.P.S. e Silva, Leidjane Matos de Souto, Inacia dos Santos Moreira, Elaine Cristina Oliveira da Silva,