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06. İYTE Araştırma Merkezleri / IZTECH Research Centers

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Browsing 06. İYTE Araştırma Merkezleri / IZTECH Research Centers by Journal "Drying Technology"

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    Article
    Citation - WoS: 71
    Citation - Scopus: 77
    A Comparative Study on Exergetic Performance Assessment for Drying of Broccoli Florets in Three Different Drying Systems
    (Taylor and Francis Ltd., 2010-02) İçier, Filiz; Hancıoğlu, Ebru; Çolak, Neslihan; Erbay, Zafer; Hancıoğlu Kuzgunkaya, Ebru; Hepbaşlı, Arif; 01. Izmir Institute of Technology
    This article deals with the exergy analysis and evaluation of broccoli in three different drying systems. The effects of drying air temperature on the exergy destruction, exergy efficiency, and exergetic improvement potential of the drying process were investigated. The exergy destruction rate for the drying chamber increased with the rise in the drying air temperature at 1.5 m/s, both in the tray and the heat pump dryer. The highest exergy efficiency value was obtained as 90.86% in the fluid bed dryer in comparison to the other two drying systems and the improvement potential rate was the highest in the heat pump dryer during drying of broccoli at the drying air temperature of 45°C and the drying air velocity of 1.0 m/s. © 2010 Taylor & Francis Group, LLC.
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    Article
    Citation - WoS: 50
    Citation - Scopus: 50
    Exergoeconomic analysis of plum drying in a heat pump conveyor dryer
    (Taylor and Francis Ltd., 2010-12) Hepbaşlı, Arif; Hancıoğlu, Ebru; Çolak, Neslihan; Hancıoğlu, Ebru; İçier, Filiz; Erbay, Zafer; 01. Izmir Institute of Technology
    In this study, plum slices were dried in a heat pump dryer designed and constructed in Ege University, Izmir, Turkey. Drying experiments were carried out at an air temperature range of 45-55°C. The performance of the dryer along with its main components were evaluated using an exergy analysis method. Exergy destruction and capital cost rates were used for the exergoeconomic analysis, which is based on the quantities exergy, cost, energy, and mass (EXCEM) method. Exergy destruction rates to capital cost values Rex were obtained to vary between 1.668 and 2.063 W/ USD at different drying air temperatures. Ren values were observed to range from 6.258 to 5.749 W/USD. Ren values decreased as the drying air temperature increased, contrary to Rex values. Ṙex and Ṙen values increased linearly with increasing temperature due to the loss, whereas Ṙen decreased due to the relatively higher energy utilization efficiency of the heat pump. In the compressor, Ṙen and Ṙex values decreased with the increase in the temperature contrary to the other components. Ṙex had the lowest value in the drying duct. However, in the compressor, expansion valve, and heat recovery, Ṙex values were found to be higher and should be improved in these units. © 2010 Taylor & Francis Group, LLC.