EXPERIMENTAL ANALYSES OF HEAT PUMP AND PARABOLIC TROUGH SOLAR FLUIDIZED BED DRYER


GÜREL A. E. , CEYLAN İ. , YILMAZ S.

ISI BILIMI VE TEKNIGI DERGISI-JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY, cilt.35, ss.107-115, 2015 (SCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 35 Konu: 1
  • Basım Tarihi: 2015
  • Dergi Adı: ISI BILIMI VE TEKNIGI DERGISI-JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY
  • Sayfa Sayıları: ss.107-115

Özet

In this study, both a heat pump and parabolic trough solar fluidized bed dryer were designed and manufactured. They were experimentally analyzed by first and second laws of thermodynamics and a comparison was made between the two. Drying air temperatures were controlled as PID for 40 degrees C set temperatures. Drying air temperature was controlled with a sensitivity of +/- 0.254 degrees C in heat pump dryer system and +/- 0.369 degrees C in parabolic trough solar dryer. In the heat pump dryer system, whole system heating coefficient of performance (COPts) was calculated as average 1.91. In parabolic trough solar dryer, heating performance coefficient (IPK) was calculated as average 3. Exergy loss was found to be 203.97 J/kg in the heat pump dryer, and 32.08 J/kg in parabolic trough solar dryer. Average exergy efficiency was found to be 31.1% in the heat pump dryer, and 63.37% in parabolic trough solar dryer.