Precooling Time Estimation and Measurement Methods in Forced Air Precooling Systems

摘要: Abstract: In food precooling it is important to know the coefficients of heat transmission by convection obtain cooling time estimation. this study, simulation a fruit system has been carried out using artificial rubber fruits with spherical form. The coefficient transfer calculated starting from adimensional relationships, applying Buckingham’s pi theorem and adapting necessary parameters characteristics process. determined measuring temperature in different positions simulator. Moreover, parameter convection, solving general equation conduction. results show that obtained complete resolution above-mentioned quite good However, when simplified methods are used, less satisfactory, due fact we times lower than ones