video

sound

Persian Version

View:

232

Download:

0

Cites:

Information Journal Paper

Title

INFLUENCE OF AIR FLOW RECIRCULATION ON ENERGY CONSUMPTION AND EFFICIENCY IN A SOLAR DRYER

Pages

 Start Page 31 | End Page 38

Abstract

 A combined SOLAR DRYER of a specific mechanism to be adjusted for the tilted angle of the collector was utilized to get the following needed information. The EFFICIENCY of the dryers is low because of such various reasons as heat loss of air occurred in an open flow circuit. Getting air back toward the air inlet of a dryer can increase the EFFICIENCY of the dryer while decreasing the drying process period. A new mechanism was considered for a dryer in which, the percentage of air recirculation is controlled. It contains two dampers embedded in return air channel of the dryer. In order to investigate the effect of air recirculation on ENERGY CONSUMPTION of drying and dryer EFFICIENCY, thin layers of tomato slices are dried at three levels of air flow rate (0.018, 0.036 and 0.054 m3/s) and at four levels of air recirculation percentage (0, 50, 75 and 87.5%). The experiments were carried out, starting with the beginning of the autumn when the moisture content of the samples reaches 12% (w.b.). The results indicated that a minimum of ENERGY CONSUMPTION and a maximum of EFFICIENCY were achieved when 75% of air flow was forced back to the inlet of the dryer.

Cites

  • No record.
  • References

  • No record.
  • Related Journal Papers

    Related Seminar Papers

  • No record.
  • Related Plans

  • No record.
  • Recommended Workshops






    File Not Exists.