Mathematical Modelling of a Parabolic Solar Dryer under Overcast Sky Condition

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Orawan Aumporn
Phoothanet Saengcharoon
Serm Janjai


The objective of this paper is to develop mathematical modelling of a parabolic solar dryer under overcast sky condition. The model is based on heat transfer equation which considers the thermophysical properties of drying air at steady state. The solution of this model is solved using a Finite difference method from the heat transfer equation. The numerical method using a Compaq Visual FORTRAN 6.5 program. Validation of the model was carried out by comparing the simulation results calculated from the model and the results obtained from the experiments. It was found that both results were in good consistency with R2 = 0.897 and RMSE = 1.083.


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