Yazar "Balbay, A." seçeneğine göre listele

Listeleniyor 1 - 3 / 3
  • [ X ]
    Öğe
    An Experimental Study on Drying of Pistacia Terebinthus in a Fixed Bed Dryer
    (Tech Science Press, 2013) Balbay, A.; Ulker, H.; Sahin, O.
    In this study, drying behaviours of the outer shell peeled Bittim (Pistacia terebinthus) with initial moisture content of 42.2% (dry basis (d.b)) was investigated in a novel fixed bed drying system. The drying experiments were performed at different temperatures (40 degrees C, 60 degrees C and 80 degrees C), air velocities (0.5 m/s and 1 m/s) and weights (30 g and 40 g). A constant rate period was not observed in the drying of bittims; all the drying process occurred in falling rate period. Three models in literature were selected to fit the experimental data. The fit quality of models was evaluated using the coefficient of determination (R-2), sum square error (SSE) and root mean square error (RMSE). Balbay and Sahin model has a good agreement with the experimental data and gave the best results for bittims in a fixed bed system.
  • [ X ]
    Öğe
    An experimental study on drying of pistacia terebinthus in a fixed beddryer
    (2013) Balbay, A.; Ülker, H.; Şahin, O.
    In this study, drying behaviours of the outer shell peeled Bittim (Pistacia terebinthus) with initial moisture content of 42.2% (dry basis (d.b))was investigated in a novel fixed bed drying system. The drying experimentswere performed at different temperatures (40°C, 60°C and 80 oC), air velocities (0.5 m/s and 1 m/s) and weights (30 g and 40 g). A constant rate period was not observed in the drying of bittims; all the drying process occurred in falling rate period. Three models in literature were selected to fitthe experimental data. The fit quality of models was evaluated using the coefficient of determination (R2), sum square error (SSE) and root mean square error (RMSE). Balbay and Sahin model has a good agreement with the experimental data and gave the best results for bittims in a fixed bed system.©2013 Tech Science Press.
  • [ X ]
    Öğe
    Hydrogen Production from Sodium Borohydride in Boric Acid-water Mixtures
    (Taylor & Francis Inc, 2014) Balbay, A.; Sahin, Oe
    Borohydride, which reacts slowly with water, is developed as hydrogen production and storage options. The reaction is significantly accelerated by the rise of temperature or by the addition of acidic substances. Boric acid (H3BO3) can be used as an alternative to water for the hydrogen production in the hydrolysis of sodium borohydride (NaBH4). The effect of H3BO3 and NaBH4-H3BO3 molar ratios was studied at 30, 40, 50, 60, and 80 degrees C on the hydrogen production of NaBH4. All of these results show that H3BO3 is a relatively green acid compound for hydrogen generation from NaBH4 and the H3BO3-water-NaBH4 system being quite simple for single-use applications. It was found that the reaction between H3BO3 and NaBH4 complied with a second order kinetics rate with 0.5 reaction orders versus NaBH4 concentration and 1.5 orders versus H3BO3 concentration, and the activation energy for conversion was calculated as 18.01 kJ mol(-1).