Е-Публикации
Технически университет - София

Abstract: The Author(s).Cogeneration is one of the leading technologies. Over time, it has been activated by almost all developed and actively developing countries in the world. However, achieving high energy efficiency when investing in such production is not an absolute rule but a matter of a thorough technical and economic assessment of the existing conditions. The management teams of textile enterprises usually focus on improving the economic and operational results, but despite the benefits of cogeneration, they do not want to take risks in its implementation because it is related to large strategic investments in the sector. Conducting research to identify and analyze the specific operating conditions of the textile enterprise in question will allow for the analysis of the possibility of introducing cogeneration. Looking at the structure of the energy consumption of the two types of energy (heat and electricity), the dynamics of prices and the geographical location are a prerequisites for studying the possibilities of introducing joint production of heat and electricity at a large textile enterprise. In the publication, an analysis of primary energy consumption was performed, a heat balance of the considered enterprise was drawn up, and objective economic and technical parameters based on the characteristics of the technology were derived. Based on the analysis of the obtained results, conclusions have been drawn regarding the possibilities of implementing joint extraction of heat and electricity in textile enterprises. The scientific novelty has been demonstrated by applying a new approach for a complete solution, aiming to achieve cleaner production and increase the energy efficiency of the considered textile enterprise.

References

1. Ali et al. 2023a – Ali, R.H., Samee, A.A.A. and Maghrabie, H.M. 2023. Exergoeconomic assessment of a cogeneration pulp and paper plant under bi-operating modes. Applied Energy 351, DOI: 10.1016/j. apenergy.2023.121784.
2. Ali et al. 2023b – Ali, R.H., Samee, A.A.A. and Maghrabie, H.M. 2023. Thermodynamic analysis of a cogeneration system in pulp and paper industry under singular and hybrid operating modes. Energy 263(E), DOI: 10.1016/j.energy.2022.125964.
3. Andreas et al. 2018 – Andreas, J.J., Burns, C. and Touza, J. 2018. Overcoming energy injustice? Bulgaria’s renewable energy transition in times of crisis. Energy Research & Social Science 42, pp. 44–52, DOI: 10.1016/j.erss.2018.02.020.
4. de Oliveira Neto et al. 2022 – de Oliveira Neto, G.C., Correia, J.M.F., Tucci, H.N.P., Librantz, A.F.H., Giannetti, B.F. and de Almeida, C.M.V.B. 2022. Sustainable Resilience Degree assessment of the textile industrial by size: Incremental change in cleaner production practices considering circular economy. Journal of Cleaner Production 380(1), DOI: 10.1016/j.jclepro.2022.134633.
5. Gao et al. 2024 – Gao, J., Wang, C., Wang, Z., Lin, J., Zhang, R., Wu, X., Xu, G. and Wang, Z. 2024. Site selection decision for biomass cogeneration projects from a sustainable perspective: A case study of China. Energy 286, DOI: 10.1016/j.energy.2023.129518.
6. Garcia et al. 2024 – Garcia, D.A., Dionysis, G., Raskovic, P., Duić, N. and Al-Nimr, M.A. 2024. Advanced technological options for sustainable development of energy, water and environment systems upgrade towards climate neutrality. Energy Conversion and Management: X 22, DOI: 10.1016/j. ecmx.2024.100528.
7. Gładysz et al. 2020 – Gładysz, P., Saari, J. and Czarnowska, L. 2020. Thermo-ecological cost analysis of cogeneration and polygeneration energy systems – Case study for thermal conversion of biomass. Renewable Energy 145, pp. 1748–1760, DOI: 10.1016/j.renene.2019.06.088.
8. Hirvonen et al. 2014 – Hirvonen, J., Kayo, G., Hasan, A. and Sirén, K. 2014. Local sharing of cogeneration energy through individually prioritized controls for increased on-site energy utilization. Applied Energy 135, pp. 350–363, DOI: 10.1016/j.apenergy.2014.08.090.
9. Iliev et al. 2020 – Iliev, I., Terziev, A. and Rasheva, V. 2020. Cogeneration Power Plants Based on Biomass Gasification. 7thInternational Conference on Energy Efficiency and Agricultural Engineering (EE&AE), Ruse, Bulgaria, pp. 1–4, DOI: 10.1109/EEAE49144.2020.9279042.
10. Khan et al. 2023 – Khan, K., Khurshid, A. and Cifuentes-Faura, J. 2023. Investigating the relationship between geopolitical risks and economic security: Empirical evidence from central and Eastern European countries. Resources Policy 85(A), DOI: 10.1016/j.resourpol.2023.103872.
11. Khurana et al. 2002 – Khurana, S., Banerjee, R. and Gaitonde, U. 2002. Energy balance and cogeneration for a cement plant. Applied Thermal Engineering 22(5), pp. 485–494, DOI: 10.1016/S1359-4311(01)00128-4.
12. Kluczek, A. and Buczacki, A. 2023. Smart energy sustainability hub in light of Industry 4.0. Energy Reports 10, pp. 3835–3846, DOI: 10.1016/j.egyr.2023.10.048.
13. Krastev et al. 2023 – Krastev, I.I., Filimonova, A.A., Chichirov, A.A., Chichirova, N.D., Pechenkin, A.V. and Vinogradov, A.S. 2023. Theoretical and Experimental Studies of Combined Heat and Power Systems with SOFCs. Energies 16(4), DOI: 10.3390/en16041898.
14. Mancarella, P. and Chicco, G. 2009. Global and local emission impact assessment of distributed cogeneration systems with partial-load models. Applied Energy 86(10), pp. 2096–2106, DOI: 10.1016/j. apenergy.2008.12.026.
15. Park et al. 2015 – Park, C., Kim, C., Lee, S., Lim, G., Lee, S. and Choi, Y. 2015 Effect of control strategy on performance and emissions of natural gas engine for cogeneration system. Energy 82, pp. 353–360, DOI: 10.1016/j.energy.2015.01.045.
16. Saini, M.C. and Jakhar, O.P. 2024. Experimental investigation of diesel engine driven micro-cogeneration system integrated with thermal energy storage for power and space cooling. Energy Conversion and Management: X 21, DOI: 10.1016/j.ecmx.2023.100506.
17. Stós et al. 2019 – Stós, K., Kamiński, J. and Malec, M. 2019. Analysis of selected environmental regulations influencing the long-term operation of cogeneration companies. Polityka Energetyczna – Energy Policy Journal 22(4), pp. 81–96, DOI: 10.33223/epj/110072.
18. Wen et al. 2021 – Wen, X., Cao, H., Hon, B., Chen, E. and Li, H. 2021. Energy value mapping: A novel lean method to integrate energy efficiency into production management. Energy 217, DOI: 10.1016/j. energy.2020.119353.
19. Zaporowski, B. 2019. Energy and economic effectiveness of gas and gas-steam combined heat and power units fired with natural gas. Polityka Energetyczna – Energy Policy Journal 22(3), pp. 33–44, DOI: 10.33223/epj/111669.
20. Zhang et al. 2023 – Zhang, H., Hao, R., Liu, X., Zhang, N., Liu, C., Liu, Y., Duan, C., Qiao, M. and Qin, J. 2023. Thermodynamic and economic evaluation on a novel cogeneration system based on energy sectionalized closed utilization method. Applied Thermal Engineering 233, DOI: 10.1016/j.applther-maleng.2023.121200.

Issue