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Numerical investigation of moisture removal and energy consumption of porous body affected by EHD

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  • Dolati, F.
  • Amanifard, N.
  • Deylami, H.M.

Abstract

In this study, the convective drying rate of a porous body driven by Electrohydrodynamics (EHD) was numerically investigated. Two different types of collecting electrode were compared: wall plate collector and segmented plate collector. Firstly, wall plate collector was examined and compared with non-EHD case. The numerical results showed that the moisture removal in the wall plate collector was 5 times higher than the non-EHD case. Secondly, the wall plate collector was replaced with a segmented plate collector. Different arrangements, as well as the various vertical distances between the emitter and the collectors, were examined to find a higher mass transfer. The numerical results showed that moisture removal in the segmented collector in the most appropriate conditions was about 3 times greater than the wall plate collector case. Finally, to gain a more general conclusion, the specific energy consumption (SEC) and pressure loss of all cases were evaluated. The results indicated that the pressure loss has increased greatly by using the EHD-induced flow. Moreover, it was depicted that for the wall plate collector the SEC reached to 8.2 W-h/kg when it decreased to orders of 10−2 W-h/kg for the segmented collector cases.

Suggested Citation

  • Dolati, F. & Amanifard, N. & Deylami, H.M., 2018. "Numerical investigation of moisture removal and energy consumption of porous body affected by EHD," Energy, Elsevier, vol. 154(C), pages 352-364.
    • Handle: RePEc:eee:energy:v:154:y:2018:i:c:p:352-364
    DOI: 10.1016/j.energy.2018.04.143
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    References listed on IDEAS

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    1. Bardy, Erik & Hamdi, Merouane & Havet, Michel & Rouaud, Olivier, 2015. "Transient exergetic efficiency and moisture loss analysis of forced convection drying with and without electrohydrodynamic enhancement," Energy, Elsevier, vol. 89(C), pages 519-527.
    2. Kasayapanand, N. & Kiatsiriroat, T., 2007. "Optimized mass flux ratio of double-flow solar air heater with EHD," Energy, Elsevier, vol. 32(8), pages 1343-1351.
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