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A three-dimensional particle model to describe the moisture distribution in copra for 20 hours of drying was developed using computational fluid dynamics. Drying experiments were performed for seven different temperatures in the range of 45 – 75 degrees of Celsius in a laboratory scale hot air dryer using copra samples of the dimensions 0.01×0.01×0.01 m3. Results of the spatial moisture distribution...
This study intends to determine the diffusion coefficient of moisture during hot air drying of copra. A computational fluid dynamic model was used to fine-tune the system parameters with experimental data. Drying experiments were performed in a laboratory scale hot air dryer. Drying rate of copra can be divided into two sub-drying periods, first and second falling rate periods and two significantly...
This paper communicates the energy performance of a solar-ambient hybrid source heat pump drier (SAHSHPD) for copra drying under hot-humid weather conditions. The standard energy performance parameters such as coefficient of performance (COP), condenser heat capacity (Qc) and specific moisture extraction rate (SMER) were evaluated. The results showed that COP of a SAHSHPD was varied between 2.31 and...
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