2019 Cilt 13 Sayı 37

Permanent URI for this collectionhttps://hdl.handle.net/11452/20511

Browse

Browsing by Department "Biyosistem Mühendisliği Bölümü"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Mathematical modeling of ultrasound pretreated carrot slices
    (Bursa Uludağ Üniversitesi, 2019-03-20) Polat, Ahmet; İzli, Nazmi; Ziraat Fakültesi; Biyosistem Mühendisliği Bölümü
    In this study, the effects of ultrasound pretreatment, air drying temperature and slice thickness on the drying kinetics of carrot were analyzed. Ultrasound pretreatments were applied to carrot samples of different slice thicknesses with for 0 (control), 20 and 40 minutes. All products were dried in the convection oven with constant air speed 1 m s-1 . The drying times varied from 260 to 110 minutes depending on the varying slice thicknesses, temperatures and the applied ultrasound pretreatments. In order to determine a suitable thin layer model for drying applications, 10 different mathematical models were fitted to the experimental results. The model was selected as the best model with the highest value of R 2 (Regression coefficient), lowest RMSE (Root mean square error) and χ2 (Chi-square). As a result of the statistical evaluation, it was determined that the Midilli et al. model is the most suitable model for explaining the convective drying characteristics of carrot according to other models. Consequently, ultrasound pretreatment can be used as a favorable method for reducing the drying time of the carrots in the convective process.
  • Thumbnail Image
    Item
    A research on the meet of energy needs in broiler plant with solar panels
    (Bursa Uludağ Üniversitesi, 2019-03-20) Erden, Sena; Aydin, Merve; Taşkın, Onur; Vardar, Ali; Ziraat Fakültesi; Biyosistem Mühendisliği Bölümü
    One of the biggest problems of today's enterprises is the high-value electricity costs. In order to solve this problem, solutions should be developed based on solar energy projects. Moreover, by selling after the self-consumption to the grid can be obtained more profit. This study includes the investigation of the rooftop of broiler plant with solar energy system. As a result, the total energy consumption of the plant was calculated as 46782 kWhyear-1 . To cover the consumption, 508 pieces (250 Watt) polycrystalline solar panels were used. The panels can be generate a total energy of 161536 kWhyear-1 . It is foreseen that a total energy of 114754 kWhyear-1 can be supply to the grid and 15264 $year-1 income can be obtain. The payback period of the system was found 5.9 years.