Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/6836
Title: Thermodynamic performance evaluation of a geothermal drying system
Authors: Helvacı, Hüseyin Utku
Gökçen Akkurt, Gülden
Helvacı, Hüseyin Utku
Gökçen Akkurt, Gülden
Izmir Institute of Technology. Energy Systems Engineering
Keywords: Geothermal energy
Energy analysis
Drying
Olive leaves
District heating
Exergy analysis
Issue Date: Jan-2014
Publisher: Springer Verlag
Source: Helvacı, H. U., and Gökçen Akkurt, G. (2014). Thermodynamic performance evaluation of a geothermal drying system. In İ. Dinçer, A. Midilli, and H. Küçük (Eds.), Progress in Exergy, Energy, and the Environment, (pp. 331-342). Switzerland: Springer. doi:10.1007/978-3-319-04681-5_29
Abstract: Renewable energy sources such as geothermal energy can be used in drying processes as a heat source due to the high energy costs of fossil fuels. In this study, geothermal cabinet type dryer was constructed and situated in Balcova-Narlidere Geothermal Field, Turkey where the clean city water of district heating system is used as an energy source for the dryer. The dryer was tested on site for drying of olive leaves and energy and exergy analyses of the drying process conducted under two cases: Case 1. Exhaust air was rejected to the environment. Case 2. A portion of exhaust air was re-circulated. Energy Utilization Ratio (EUR) was determined as 7.96 for Case 1 and 50.36 for Case 2. The highest rate of exergy destruction occurred in the fan, followed by heat exchanger and the dryer, accounting for 0.2913, 0.05663 and 0.0115 kW, respectively. Exergetic efficiency of the drying chamber was calculated as 89.66 %. Re-circulating the exhaust air decreased the exergy value at the outlet of the dryer from 0.1013 to 0.08104 kW, indicating that re-using the air increases the performance of the dyer.
URI: http://doi.org/10.1007/978-3-319-04681-5_29
http://hdl.handle.net/11147/6836
ISBN: 9783319046815
Appears in Collections:Energy Systems Engineering / Enerji Sistemleri Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Sürdürülebilir Yeşil Kampüs Koleksiyonu / Sustainable Green Campus Collection

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