Experimental and Theoretical Investigation of Pumpkin Drying in Fluidized Bed Dryer

145 - 158, 13.10.2016
https://doi.org/10.17482/uujfe.84114

Abstract

Thin layer drying characteristics of pumpkin cube were experimentally investigated in a  fluidized bed dryer. Experiments were performed at three different drying temperatures: 50, 60 and 70 °C.  Pumpkin used in the experiments had an initial moisture content of  95% wet basis (1930 % dry basis). The drying air velocities were set to 3.5 m/s to achieve fluidization. Experimental results show that large drying rates are obtained in the fluidized bed dryer, which are much higher than those obtained with conventional methods and convective tray dryer. In just 120 minutes moisture contents lower than 6% wet basis were achieved. Pumkin drying was mathematically modeled using the Lewis, Henderson ve Pabis, Page, and logaritmic models,  all of which are semi-emperical models widely applied in the literature. Using Fick’s first law effective diffusivities were calculated and compared with those in the literature. Effective diffusion coefficients obtained in the fluidized bed dryer were up to 70% higher than the diffusion coefficients obtained in convective tray dryers. Temperature dependence of effective diffusion coefficients was described by an Arrhenius-type relationship.

References

  • Aghbashlo, M. ve diğerleri (2008) Influence of drying conditions on the effective moisture diffusivity, energy of activation and energy consumption during the thin-layer drying of berberis fruit (Berberidaceae), Energy Conversion and Management, 49, 2865-71, doi:10.1016/j.enconman.2008.03.009
  • Akpinar, E. ve diğerleri (2003) Experimental investigation of drying behaviour and conditions of pumpkin slices via a cyclone‐type dryer, Journal of the Science of Food and Agriculture, 83, 1480-86, doi: 10.1002/jsfa.1565
  • Alibas, I. (2007) Microwave, air and combined microwave–air-drying parameters of pumpkin slices, LWT-Food Science and Technology, 40, 1445-51, doi:10.1016/j.lwt.2006.09.002
  • Arévalo-Pinedo, A. ve Murr, F. E. (2006) Kinetics of vacuum drying of pumpkin (Cucurbita maxima): Modeling with shrinkage, Journal of Food Engineering, 76, 562-67, doi:10.1016/j.jfoodeng.2005.06.003
  • Crank, J. 1979. The mathematics of diffusion (Oxford university press).
  • Diamante, L. M. ve Munro, P. A. (1993) Mathematical modelling of the thin layer solar drying of sweet potato slices, Solar energy, 51, 271-76, doi:10.1016/0038-092X(93)90122-5
  • Doymaz, I. (2004) Convective air drying characteristics of thin layer carrots, Journal of food engineering, 61, 359-64, doi:10.1016/S0260-8774(03)00142-0
  • Doymaz, I. (2007) The kinetics of forced convective air-drying of pumpkin slices, Journal of food engineering, 79, 243-48, doi:10.1016/j.jfoodeng.2006.01.049
  • Erbay, Z. ve Icier, F. (2010) A review of thin layer drying of foods: theory, modeling, and experimental results, Critical reviews in food science and nutrition, 50, 441-64, doi:10.1080/10408390802437063
  • Gur, M. ve Gur, M. 2014. 'Comparing Corn Drying in Fluidized Bed Dryer and Convective Tray Dryer.' in, Progress in Exergy, Energy, and the Environment (Springer), doi: 10.1007/978-3-319-04681-5_65
  • Henderson, S. (1974) Progress in developing the thin layer drying equation, Transactions of the ASAE, 17, 1167-68, doi: 10.13031/2013.37052
  • Henderson, S. ve Pabis, S. (1961) Grain drying theory I. Temperature effect on drying coefficient, Journal of Agricultural Engineering Research, 6, 169-74.
  • Keey, R. B. 2013. Drying: principles and practice (Elsevier).
  • Lewis, W. K. (1921) The Rate of Drying of Solid Materials, Industrial & Engineering Chemistry, 13, 427-32, doi: 10.1021/ie50137a021
  • Madamba, P. S. ve diğerleri (1996) The thin-layer drying characteristics of garlic slices, Journal of food engineering, 29, 75-97, doi:10.1016/0260-8774(95)00062-3
  • Madhiyanon, T. ve diğerleri (2009) Models of fluidized bed drying for thin-layer chopped coconut, Applied Thermal Engineering, 29, 2849-54, doi:10.1016/j.applthermaleng.2009.02.003
  • Mazza, G. ve LeMaguer, M. (1980) Dehydration of onion: some theoretical and practical considerations, International Journal of Food Science & Technology, 15, 181-94, doi: 10.1111/j.1365-2621.1980.tb00930.x
  • Öztekin, S. ve diğerleri (1999) Crop drying programme in Turkey, Renewable energy, 16, 789-94, doi:10.1016/S0960-1481(98)00282-1
  • Pala, M. ve diğerleri (1996) Effects of pretreatments on the quality of open-air and solar dried apricots, Nahrung-Food, 40, 137-41, doi: 10.1002/food.19960400308
  • Ramesh, M. ve diğerleri (2001) Influence of processing parameters on the drying of spice paprika, Journal of Food Engineering, 49, 63-72, doi:10.1016/S0260-8774(00)00185-0
  • Ratnayake, R. ve diğerleri (2004) Influence of cultivar, storage and cooking on the mechanical properties of winter squash (Cucurbita maxima), Journal of the Science of Food and Agriculture, 84, 433-40, doi: 10.1002/jsfa.1674
  • Sahin, A. ve Dincer, I. (2005) Prediction of drying times for irregular shaped multi-dimensional moist solids, Journal of food engineering, 71, 119-26, doi:10.1016/j.jfoodeng.2004.10.024
  • Seremet, L. ve diğerleri (2016) Effect of different drying methods on moisture ratio and rehydration of pumpkin slices, Food chemistry, 195, 104-09, doi:10.1016/j.foodchem.2015.03.125
  • Tatemoto, Y. ve diğerleri (2001) Effect of fluidizing particle on drying characteristics of porous material in fluidized bed, Drying Technology, 19, 1305-18, doi:10.1081/DRT-100105290
  • Tunde-Akintunde, T. ve Ogunlakin, G. (2013) Mathematical modeling of drying of pretreated and untreated pumpkin, Journal of food science and technology, 50, 705-13, doi: 10.1007/s13197-011-0392-2
  • Tunde-Akintunde, T. Y. ve Ogunlakin, G. O. (2011) Influence of drying conditions on the effective moisture diffusivity and energy requirements during the drying of pretreated and untreated pumpkin, Energy Conversion and Management, 52, 1107-13.
  • Wang, Z. H. ve Chen, G. (2000) Heat and mass transfer in batch fluidized-bed drying of porous particles, Chemical Engineering Science, 55, 1857-69.
  • Yağcıoğlu, A. ve diğerleri. 1999. "Drying Characteristics of Laurel Leaves Under Different Drying Conditions. 7th Int." In Congress on Agricultural Mechanization and Enerdy, 565-69.
  • Yaldız, O. ve Ertekin, C. (2001) Thin layer solar drying of some vegetables, Drying Technology, 19, 583-97, doi: 10.1081/DRT-100103936

145 - 158, 13.10.2016
https://doi.org/10.17482/uujfe.84114

Abstract

References

  • Aghbashlo, M. ve diğerleri (2008) Influence of drying conditions on the effective moisture diffusivity, energy of activation and energy consumption during the thin-layer drying of berberis fruit (Berberidaceae), Energy Conversion and Management, 49, 2865-71, doi:10.1016/j.enconman.2008.03.009
  • Akpinar, E. ve diğerleri (2003) Experimental investigation of drying behaviour and conditions of pumpkin slices via a cyclone‐type dryer, Journal of the Science of Food and Agriculture, 83, 1480-86, doi: 10.1002/jsfa.1565
  • Alibas, I. (2007) Microwave, air and combined microwave–air-drying parameters of pumpkin slices, LWT-Food Science and Technology, 40, 1445-51, doi:10.1016/j.lwt.2006.09.002
  • Arévalo-Pinedo, A. ve Murr, F. E. (2006) Kinetics of vacuum drying of pumpkin (Cucurbita maxima): Modeling with shrinkage, Journal of Food Engineering, 76, 562-67, doi:10.1016/j.jfoodeng.2005.06.003
  • Crank, J. 1979. The mathematics of diffusion (Oxford university press).
  • Diamante, L. M. ve Munro, P. A. (1993) Mathematical modelling of the thin layer solar drying of sweet potato slices, Solar energy, 51, 271-76, doi:10.1016/0038-092X(93)90122-5
  • Doymaz, I. (2004) Convective air drying characteristics of thin layer carrots, Journal of food engineering, 61, 359-64, doi:10.1016/S0260-8774(03)00142-0
  • Doymaz, I. (2007) The kinetics of forced convective air-drying of pumpkin slices, Journal of food engineering, 79, 243-48, doi:10.1016/j.jfoodeng.2006.01.049
  • Erbay, Z. ve Icier, F. (2010) A review of thin layer drying of foods: theory, modeling, and experimental results, Critical reviews in food science and nutrition, 50, 441-64, doi:10.1080/10408390802437063
  • Gur, M. ve Gur, M. 2014. 'Comparing Corn Drying in Fluidized Bed Dryer and Convective Tray Dryer.' in, Progress in Exergy, Energy, and the Environment (Springer), doi: 10.1007/978-3-319-04681-5_65
  • Henderson, S. (1974) Progress in developing the thin layer drying equation, Transactions of the ASAE, 17, 1167-68, doi: 10.13031/2013.37052
  • Henderson, S. ve Pabis, S. (1961) Grain drying theory I. Temperature effect on drying coefficient, Journal of Agricultural Engineering Research, 6, 169-74.
  • Keey, R. B. 2013. Drying: principles and practice (Elsevier).
  • Lewis, W. K. (1921) The Rate of Drying of Solid Materials, Industrial & Engineering Chemistry, 13, 427-32, doi: 10.1021/ie50137a021
  • Madamba, P. S. ve diğerleri (1996) The thin-layer drying characteristics of garlic slices, Journal of food engineering, 29, 75-97, doi:10.1016/0260-8774(95)00062-3
  • Madhiyanon, T. ve diğerleri (2009) Models of fluidized bed drying for thin-layer chopped coconut, Applied Thermal Engineering, 29, 2849-54, doi:10.1016/j.applthermaleng.2009.02.003
  • Mazza, G. ve LeMaguer, M. (1980) Dehydration of onion: some theoretical and practical considerations, International Journal of Food Science & Technology, 15, 181-94, doi: 10.1111/j.1365-2621.1980.tb00930.x
  • Öztekin, S. ve diğerleri (1999) Crop drying programme in Turkey, Renewable energy, 16, 789-94, doi:10.1016/S0960-1481(98)00282-1
  • Pala, M. ve diğerleri (1996) Effects of pretreatments on the quality of open-air and solar dried apricots, Nahrung-Food, 40, 137-41, doi: 10.1002/food.19960400308
  • Ramesh, M. ve diğerleri (2001) Influence of processing parameters on the drying of spice paprika, Journal of Food Engineering, 49, 63-72, doi:10.1016/S0260-8774(00)00185-0
  • Ratnayake, R. ve diğerleri (2004) Influence of cultivar, storage and cooking on the mechanical properties of winter squash (Cucurbita maxima), Journal of the Science of Food and Agriculture, 84, 433-40, doi: 10.1002/jsfa.1674
  • Sahin, A. ve Dincer, I. (2005) Prediction of drying times for irregular shaped multi-dimensional moist solids, Journal of food engineering, 71, 119-26, doi:10.1016/j.jfoodeng.2004.10.024
  • Seremet, L. ve diğerleri (2016) Effect of different drying methods on moisture ratio and rehydration of pumpkin slices, Food chemistry, 195, 104-09, doi:10.1016/j.foodchem.2015.03.125
  • Tatemoto, Y. ve diğerleri (2001) Effect of fluidizing particle on drying characteristics of porous material in fluidized bed, Drying Technology, 19, 1305-18, doi:10.1081/DRT-100105290
  • Tunde-Akintunde, T. ve Ogunlakin, G. (2013) Mathematical modeling of drying of pretreated and untreated pumpkin, Journal of food science and technology, 50, 705-13, doi: 10.1007/s13197-011-0392-2
  • Tunde-Akintunde, T. Y. ve Ogunlakin, G. O. (2011) Influence of drying conditions on the effective moisture diffusivity and energy requirements during the drying of pretreated and untreated pumpkin, Energy Conversion and Management, 52, 1107-13.
  • Wang, Z. H. ve Chen, G. (2000) Heat and mass transfer in batch fluidized-bed drying of porous particles, Chemical Engineering Science, 55, 1857-69.
  • Yağcıoğlu, A. ve diğerleri. 1999. "Drying Characteristics of Laurel Leaves Under Different Drying Conditions. 7th Int." In Congress on Agricultural Mechanization and Enerdy, 565-69.
  • Yaldız, O. ve Ertekin, C. (2001) Thin layer solar drying of some vegetables, Drying Technology, 19, 583-97, doi: 10.1081/DRT-100103936
There are 29 citations in total.

Details

Authors

Mert Gur

Publication Date October 13, 2016
Submission Date May 16, 2016

Cite

APA Gur, M. (n.d.). Experimental and Theoretical Investigation of Pumpkin Drying in Fluidized Bed Dryer. Uludağ Üniversitesi Mühendislik Fakültesi Dergisi145-158. https://doi.org/10.17482/uujfe.84114
AMA Gur M. Experimental and Theoretical Investigation of Pumpkin Drying in Fluidized Bed Dryer. UUJFE.:145-158. doi:10.17482/uujfe.84114
Chicago Gur, Mert. “Experimental and Theoretical Investigation of Pumpkin Drying in Fluidized Bed Dryer”. Uludağ Üniversitesi Mühendislik Fakültesi Dergisin.d., 145-58. https://doi.org/10.17482/uujfe.84114.
EndNote Gur M Experimental and Theoretical Investigation of Pumpkin Drying in Fluidized Bed Dryer. Uludağ Üniversitesi Mühendislik Fakültesi Dergisi 145–158.
IEEE M. Gur, “Experimental and Theoretical Investigation of Pumpkin Drying in Fluidized Bed Dryer”, UUJFE, pp. 145–158, doi: 10.17482/uujfe.84114.
ISNAD Gur, Mert. “Experimental and Theoretical Investigation of Pumpkin Drying in Fluidized Bed Dryer”. Uludağ Üniversitesi Mühendislik Fakültesi Dergisi. n.d. 145-158. https://doi.org/10.17482/uujfe.84114.
JAMA Gur M. Experimental and Theoretical Investigation of Pumpkin Drying in Fluidized Bed Dryer. UUJFE.;:145–158.
MLA Gur, Mert. “Experimental and Theoretical Investigation of Pumpkin Drying in Fluidized Bed Dryer”. Uludağ Üniversitesi Mühendislik Fakültesi Dergisi, pp. 145-58, doi:10.17482/uujfe.84114.
Vancouver Gur M. Experimental and Theoretical Investigation of Pumpkin Drying in Fluidized Bed Dryer. UUJFE. :145-58.

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