Economic Analysis of Cogeneration System for Atatürk University Campus

Abstract

The increasing energy needs around the world and the depletion of fossil fuels used to meet this need, pollution to the environment, global warming have increased humanity's interest in alternative energy sources. In this context, cogeneration systems have gained value recently and found applications. In this study, natural gas and electricity consumption values of Ataturk University were examined and graphs of these values were created. Economic analysis of the cogeneration system intended to be established for Ataturk University Campus was carried out. Ataturk University campus's annual electricity needs were 31.352.552 kW. Equivalent energy consumption was calculated as 117.621.184 kW, equivalent to annual gas expenditures of 12.282.914 m3. 28.800.000 kW of electricity can be generated annually with the cogeneration system considered for the campus. However, according to the results obtained, only a fraction (18.6%) of the thermal energy needed by ataturk university campus will be covered by this system.

Keywords

• cogeneration
• economic analysis
• campus

Atatürk Üniversitesi Yerleşkesi İçin Kojenerasyon Sisteminin Ekonomik Analizi

Öz

Dünya genelinde artan enerji ihtiyacı ve bu ihtiyacın karşılanması için kullanılan fosil yakıtların tükenme durumu, çevreye verdiği kirlilik, küresel ısınma gibi durumlar insanlığın alternatif enerji kaynaklarına olan ilgisini arttırmıştır. Bu bağlamda kojenerasyon sistemleri son dönemde değer kazanmış ve uygulama alanları bulmuştur. Bu çalışmada Atatürk Üniversitesi’ne ait doğalgaz ve elektrik tüketim değerleri incelenmiştir ve bu değerlere ait grafikler oluşturulmuştur. Atatürk Üniversitesi Yerleşkesi için kurulması düşünülen kojenerasyon sisteminin ekonomik analizi yapılmıştır. Atatürk Üniversitesi kampüsünün yıllık elektrik enerjisi ihtiyacının 31.352.552 kW olduğu görülmüştür. Yıllık 12.282.914 m3 doğalgaz harcamasına denk gelen eş değer enerji tüketimi 117.621.184 kW olarak hesaplanmıştır. Kampüs için düşünülen kojenerasyon sistemiyle yıllık 28.800.000 kW elektrik üretilebilecektir. Ancak elde edilen sonuçlara göre Atatürk Üniversitesi kampüsünün ihtiyaç duyduğu ısıl enerjinin yalnızca bir kısmı (%18.6) bu sistem tarafından karşılanabilecektir.

Anahtar Kelimeler

• kojenerasyon
• ekonomik analiz
• üniversite yerleşkesi

References

1. Abbaspour, H., et al. 2021, "Energy, exergy, economic, exergoenvironmental and environmental (5E) analyses of the cogeneration plant to produce electrical power and urea." Energy Conversion and Management 235: 113951.
2. Adıgüzel, N., et al. 2015, "Economical evaluation of a cogeneration system for a building complex." Advances in Mechanical Engineering 7(3): 1687814015575951.
3. Caglayan, H. and H. Caliskan 2019, "Thermodynamic based economic and environmental analyses of an industrial cogeneration system." Applied Thermal Engineering 158: 113792.
4. Chen, H., et al. 2022, "Thermodynamic analysis and economic assessment of an improved geothermal power system integrated with a biomass-fired cogeneration plant." Energy 240: 122477.
5. Darabadi Zareh, A., et al. 2018, "Extensive thermodynamic and economic analysis of the cogeneration of heat and power system fueled by the blend of natural gas and biogas." Energy Conversion and Management 164: 329-343.
6. Ebrahimi, A., et al. 2022, "Exergy and economic analyses of an innovative integrated system for cogeneration of treated biogas and liquid carbon dioxide using absorption–compression refrigeration system and ORC/Kalina power cycles through geothermal energy." Process Safety and Environmental Protection 158: 257-281.
7. Jordán, P. S., et al. 2019, "Techno-economic analysis of solar-assisted post-combustion carbon capture to a pilot cogeneration system in Mexico." Energy 167: 1107-1119.
8. Kabacan T., 2019, “Bölgesel Isıtma Yapılan Yerleşkelerde Isı Merkezlerine Kojenerasyon Sisteminin Entegrasyonu ve Muş Alparslan Üniversitesi Kampüsü Örneği”, Fen Bilimleri Enstitüsü, Alparslan Üniversitesi, MUŞ.

9. Kanbur, B. B., et al. 2017, "A Micro Cogeneration System with LNG Cold Utilization-part 1: Energetic, Economic and Environmental Analyses." Energy Procedia 105: 1902-1909.
10. Karana, D. R. and R. R. Sahoo 2020, "Thermal, environmental and economic analysis of a new thermoelectric cogeneration system coupled with a diesel electricity generator." Sustainable Energy Technologies and Assessments 40: 100742.
11. Karellas, S. and K. Braimakis 2016, "Energy–exergy analysis and economic investigation of a cogeneration and trigeneration ORC–VCC hybrid system utilizing biomass fuel and solar power." Energy Conversion and Management 107: 103-113.
12. Li, P., et al. 2021, "Thermodynamic and economic performance analysis of heat and power cogeneration system based on advanced adiabatic compressed air energy storage coupled with solar auxiliary heat." Journal of Energy Storage 42: 103089.
13. Li, Z. X., et al. 2020, "Energy, exergy and economic analyses of new coal-fired cogeneration hybrid plant with wind energy resource." Journal of Cleaner Production 269: 122331.
14. Mosaffa, A. H., et al. 2021, "A novel enhanced ammonia-water power/cooling cogeneration system with dual level cooling temperature: Thermodynamic and economic assessments." Energy Conversion and Management 244: 114530. Urbanucci, L. and D. Testi 2019, "Integration of reversible absorption heat pumps in cogeneration systems: Exergy and economic assessment." Energy Conversion and Management 200: 112062.
15. Vialetto, G., et al. 2017, "Combined micro-cogeneration and electric vehicle system for household application: An energy and economic analysis in a Northern European climate." International Journal of Hydrogen Energy 42(15): 10285-10297.