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    Drying behaviours of bittim (Pistacia terebinthus) in a fixed bed drying system
    (2012) Balbay, Asim; Ülker, Hakan; ŞahIn, Ömer
    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 °C, 60 °C and 80 °C), ai r 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. Two models in literature were selected to fit the 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). Page model has a good agreement with the experimental data and gave the best results for bittims in a fixed bed system.
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    Öğe
    Energy Profile of Siirt
    (Springer International Publishing Switzerland 2015, 2014-11) Şahin, Ömer; Pala, Mustafa; Balbay, Asım; Hansu, Fevzi; Ülker, Hakan
    Siirt Province has various natural and fossil energy sources such as solar, hydropower, biogas, geothermal, and petrol in terms of energy potential, by contrast with other provinces in Turkey. The data collected in Siirt Province indicate that Siirt has a strong potential for solar energy. The average sunshine duration and total solar radiation in Siirt are about 7.5 h-day and 4.3 kWh/m2-day, respectively. In Siirt, there are two hydropower plants with a total installed power of 263 MW. In addition, more than 10 hydroelectric power plants with a total installed capacity of 1094 MW of power generation will be established by means of the planned dam to be installed. Considering the establishment of biogas systems, Siirt has an annual biogas production of 20,000 m3 with around 500,000 small ruminants. Siirt Province is believed to be rich in geothermal care, but there has not been enough research on this topic, yet. And also, petroleum is an important energy source in Siirt Province, lately. As a result, Siirt Province has a rich variety of energy resources, and in case of investment, it would be an energy basin center in the Southeast Anatolia region.