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Modeling the Performance of Multi-Pass Solar Crop Dryer with Reversed Absorber

Journal Name:

  • International Journal of Science and Engineering Investigations

Publication Year:

  • 2017

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Abstract (2. Language): 
In the present communication, performance of a new designed multi-pass solar crop dryer with reversed absorber (MPRASCD) was investigated experimentally and were compared with those of a typical single glazing and multi-pass solar crop dryer (MPSCD). Energy equation was developed for all the elements of solar air heater to validate the performance of multi pass solar air heater with reversed absorber. The result of a multi pass solar crop dryer with reversed absorber when compared with a multi pass solar air heater and single glazing solar crop dryer with and without reflector shows a considerable improvement in the collector efficiency, drying efficiency and pick-up efficiency. For the same flow rate, the efficiency of the solar crop dryer with reversed absorber is found to be higher than the solar crop dryer without reversed absorber solar air heater by 4.23-10%. Moisture content of red chili was reduced from 79.1% (wb) to 9.1% (wb) in 22 h by using MPRASCD and it took 30 h in MPSCD. The values of the coefficient of determination (R²), mean bias error (MBE) and root mean square error (RMSE) are used to find dependability and the quality of the fit. The Page’s model is showed a better fit to drying red chili among Newton model and Hederson & Pabis model.
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www.IJSEI.com Paper ISSN: 2251-8843 ID: 66117-15
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