Abstract

AbstractThis experimental study was carried out on an indirect solar dryer with a total volume of 113,3 L. The experimental results of airflow in an indirect dryer with natural and mixed convections were presented. In order to overcome the effect of outdoor experiments, the solar heat flux has been replaced by a heat flux submitted to the absorber and provided by Joule effect. The temperature and fluid velocity profiles are presented in order to determine the fluid flow and the thermal profiles inside the different parts of the dryer with natural and mixed convection in order to describe and allow a better comprehension of the fluid flow inside a dryer. At least to out knowledge, it turns out that the mixed convection mode is for the first time mentioned in the scientific literature.KeywordsIndirected solar dryerNatural convectionMixed convectionDrying chamber

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