ENERGY, EXERGY AND THERMOECONOMIC ANALYSİS OF A NATURAL GAS ASSİSTED GEOTHERMAL CENTRAL HEATING SYSTEM

Abstract

In this work, a natural gas assisted geothermal central heating system in northwestern Turkey utilising low enthalpy geothermal fluid and natural gas as the sources for space heating was analyzed.The study comprised energy, exergy and thermoeconomic analyses of the system under hybrid operating conditions (i.e., from 1 January 2020 to 31 March 2020). The data were collected from a basis of the facility which operates the system. The values about the heat pumps were obtained from the department of the sales company in Istanbul, Turkey and the ‘Average Values for Hybrid Case’ were determined. This work covers energetically, exergetically and thermoeconomically assessment of the system in question through its all stages. The results were found with regard to the system performance investigation. The whole system efficiencies of energy and exergy were found as 56.77% and 49.93% respectively. The exergy cost value per hour and the thermoeconomic factor were calculated as 411.242 €/h and 9.8% respectively.

Keywords

• Energy
• Exergy
• Thermoeconomic analysis

Bir Doğalgaz Destekli Jeotermal Merkezi Isıtma Sisteminin Enerji, Ekserji ve Termoekonomik Analizi

Abstract

Bu çalışmada, alan ısıtması için kaynak olarak düşük entalpili jeotermal akışkan ve doğalgaz kullanan ve Türkiye’nin kuzeybatısında bulunan doğalgaz destekli bir jeotermal merkezi ısıtma sisteminin analizi yapılmıştır. Çalışma, sistemin hibrit çalışma şartları altında (1 Ocak 2020’den 31 Mart 2020’ye kadar) enerji, ekserji ve termoekonomik analizden oluşmaktadir. Veriler sistemi kullanan işletmeden toplanmıştır. Isı pompalarına ait kapasite değerleri ise satıcı firmanın İstanbul, Türkiye’deki şubesinden elde edilmiştir ve ‘Hibrit Durum İçin Ortalama Değerler’ tespit edilmiştir. Bu çalışma, söz konusu sistemin tüm aşamalarındaki enerjetik, ekserjetik ve termoekonomik değerlendirmesini kapsamaktadır. Sonuçlar, sistem performansının incelenmesine dayalı olarak bulunmuştur. Tüm sistemin enerji ve ekserji verimi sırasıyla %56,77 ve % 49,93 olarak bulunmuştur. Saatlik ekserji maliyeti ve termoekonomik faktör sırasıyla 411,242 €/h ve %9,8 olarak hesaplanmıştır. 

Keywords

• Enerji
• Ekserji
• Termoekonomik analiz

References

1. 1. Acar, C., Dincer, I. (2017) Environmental impact assessment of renewables and conventional fuels for different end use purposes, International Journal of Global Warming, 13, 260-277. doi:10.1504/IJGW.2017.087197
2. 2. Akbulut, U., Utlu, Z., Kincay, O. (2016) Exergy, exergoenvironmental and exergoeconomic evaluation of a heat pump-integrated wall heating system, Energy,107,502-522.doi: 10.1016/j.energy.2016.04.050
3. 3. Aleixandre-Tudo, J.L., Castello-Cogollos, L., Aleixandre, J.L., Aleixandre-Benavent, R. (2019) Renewable energies: worldwide trends in research, funding and international collaboration, Renewable Energy, 139, 268-278.doi:10.1016/j.renene.2019.02.079
4. 4. Bhowmika, C., Bhowmika, S., Rayb, A., Pandeya, K.M. (2017) Optimal green energy planning for sustainable development,Renewable and Sustainable Energy Reviews, 71, 796-813. doi:10.1016/j.rser.2016.12.105
5. 5. Blazquez, C.S., Martin, A.F., Nieto, I.M., Gonzalez-Aguilera, D. (2018) Economic and environmental analysis of different district heating systems aided by geothermal energy, Energies, 11, 1-17. doi:10.3390/en11051265
6. 6. Boles, M. and Cengel, Y. (1989) Thermodynamics: An Engineering Approach, Literatüre, Istanbul.
7. 7. Boyaghchi, F.A., Chavoshi, M., Sabeti, V.(2015) Optimization of a novel combined cooling, heating and power cycledriven by geothermal and solar energies using the water/CuO (copperoxide) nanofluid,Energy, 91, 685-699.doi:10.1016/j.energy.2015.08.082
8. 8. Byrne, P. and Ghoubali, R. (2019) Exergy analysis of heat pumps for simultaneous heating and cooling, Applied Thermal Engineering, 149, 414-424. doi:10.1016/j.applthermaleng.2018.12.069

9. 9. Ebadollahi, M., Rostamzadeh, H., Pedram, M.Z., Ghaebi, H., Amidpour, M. (2019) Proposal and assessment of a new geothermal-based multigeneration system for cooling, heating, power, and hydrogen production, using LNG cold energy recovery, Renewable Energy, 135, 66-87. doi:10.1016/j.renene.2018.11.108
10. 10. Ezzat, M.F. and Dincer, I. (2016) Energy and exergy analyses of new geothermal-solar based system, Solar Energy, 134,95-106. doi:10.1016/j.solener.2016.04.029
11. 11. Ghaebi, H., Parikhani, T., Rostamzadeh, H. (2018) A novel trigeneration system using geothermal heat source and liquefied natural gas cold energy recovery: Energy, exergy and exergoeconomic analysis,Renewable Energy, 119, 513-527. doi:10.1016/j.renene.2017.11.082
12. 12. Herez, A., Khaled, M., Murr, R., Haddad, A., Elhage, H., Ramadan, M. (2017) Using geothermal energy for cooling-parametric study , Science Direct, 119, 783-791. doi:10.1016/j.egypro.2017.07.111
13. 13. Imal, M., Karapınar, C., Doğan O. (2013) The effect of natural gas use on air quality, a case study of K.Maras, KSU Journal of Engineering Sciences, 16, 22-28.
14. 14. Kanoglu, M., Cengel, Y.A, Dincer, I. (2012)Efficiency Evaluation of Energy Systems, Springer, New York.doi:10.1007/978-1-4614-2242-6
15. 15. Lazzaretto, A., Tsatsaronis, G. (2006) SPECO: a systematic and general methodology for calculating efficiencies and costs in thermal systems,Energy, 31, 1257-1289.doi:10.1016/j.energy.2005.03.011
16. 16. Noorollahi, Y., Shabbir, M.S., Siddiqi, A.F., Ilyashenko, L.K., Ahmadi, E. (2019)
17. 17. Review of two decade geothermal energy development in Iran, benefits, challenges and
18. 18. future policy, Geothermics, 77, 257-266. doi:10.1016/j.geothermics.2018.10.004
19. 19. Rostamzadeh, H., Gargari, S.G., Ghaebi, H. (2019) A novel multigeneration system driven by a hybrid biogas-geothermal heat source, Part II: Multi-criteria optimization, Energy Conversion and Management, 180, 859-888.doi:10.1016/j.enconman.2018.11.035
20. 20. Singh, D.P., Dwevendi, A. (2019) Production of clean energy by green ways, Solution to Environmental Problems Involving Nanotechnology and Enzyme Technology, 49-90. doi:10.1016/B978-0-12-813123-7.00002-5
21. 21. Soltani, M., Kashkooli, F.M., Dehghani-Sanij A.R., Kazemi, A.R., Bordbar N. Farshchi, M.J., Elmi, M., Gharali, K., Dusseault, M.B. (2019) A comprehensive study of geothermal heating and cooling systems, Sustainable Cities and Society, 44, 793-818.doi:10.1016/j.scs.2018.09.036
22. 22. Wang, X., Klemes, J.J., Dong, X., Fan, W., Xu, Z., Wang, Y., Varbanov, P.S. (2019) Air pollution terrain nexus: a review considering energy generation and consumption, Renewable and Sustainable Energy Reviews, 105, 71-85.