Presented at the Ist International Symposium on Innovative Approaches in Scientific Studies (ISAS 2018), Kemer-Antalya, Turkey, Apr 11, 2018

SETSCI Conference Proceedings, 2018, 2, Page (s): 327-335 , https://doi.org/

Published Date: 23 June 2018    | 547     7

In this study, thermodynamic analysis of a geothermal power-based district energy conversion system which produces electricity, hot water, heating and cooling are investigated. The energy produced from geothermal resource can be utilized to drive a double stage organic Rankine cycle (DS-ORC) and a single effect absorption cooling (SEAC) system. Integrated system analysis is conducted by using the Engineering Equation Solver (EES) software program. The energy and exergy efficiencies of integrated system and its two sub-systems (DS-ORC and SEAC) are calculated. Also, a parametric study is given in order to find out how different operating conditions effect the integrated system and its sub-systems performance. As a result, it is observed that overall energy and exergy efficiencies of whole system are 38.28% and 36.39%, respectively  

Keywords - Geothermal energy, district energy conversion system, thermodynamic analysis

1. Ozturk, M., Yuksel, Y.E. Energy Structure of Turkey for Sustainable Development. Renewable and Sustainable Energy Reviews, 53, 1259–1272, 2016.

2. Kanoglu, M., Bolatturk, A., Yilmaz, C. Thermodynamic analysis of models used in hydrogen production by geothermal energy. International Journal of Hydrogen
Energy. 35, 87838791, 2010.

3. Yuksel, Y.E., Ozturk, M. " Thermodynamic and thermoeconomic analyses of a geothermal energy based integrated system for hydrogen production", International
Journal of Hydrogen Energy, 42(4), pp. 2530–2546, 2017.

4. Dai, Y., Wang, J., Gao, L., 2009. Parametric Optimization And Comparative Study of Organic Rankine Cycle (ORC) For Low Grade Waste Heat Recovery. Energy Conversion and Management, 50(3), 576-582.

5. Gomri, R., 2010. Investigation of the Potential Application of Single Effect and Multiple Effect Absorption Cooling Systems. Energy Conversion and Management, 51(8), 1629- 1636.

6. Rahim, M. A., Gündüz, D., 2013. Gaz Türbinli Bir Isıl-Güç (Kojenerasyon) Çevrim Santralinin Enerji ve Ekserji Analizi: Ankara Şartlarında Uygulama. Tübav Bilim Dergisi, 6(2), 19-27.

7. Dinçer İ., Rosen, M., 2013. Exergy: Energy, Environment and Sustainable Development. Second edition . Waltham, USA: Elsevier.

8. Öztürk, M., Dinçer, İ., 2013. Thermodynamic Analysis of A Solar-Based Multi-Generation System with Hydrogen Production. Applied Thermal Engineering, 51 (1-2), 1235- 1244

9. Bejan, A., Tsatsaronis, G., Moran, M. Thermal design and optimization. Wiley-Interscience, 1995.

10. Moran, M.J., Shapiro, H., Boettner, D.D., Bailey, M.B. “Fundamentals of Engineering Thermodynamics” John Wiley and Sons: New York, 2011.

11. Öztürk, M., Dinçer, İ., 2013. Thermodynamic Assessment of An Integrated Solar Power Tower and Coal Gasification System for Multi-Generation Purposes. Energy Conversion and Management, 76, 1061-1072.

12. Dincer, I., Rosen, M.A., “Exergy Analysis of Heating, Refrigerating, and Air: Conditioning Methods and Applications” Elsevier, New York, 2015.