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Technical and economic performance analysis for a microturbine in combined heat and power generation

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  • Kaikko, Juha
  • Backman, Jari

Abstract

This paper focuses on a single-shaft microturbine in combined heat and power generation. In the application, the microturbine is operated by the heat demand and it replaces purchased electricity and produced heat in an existing boiler. The objective of the study is to analyze the effect of recuperation and different load control methods on the overall economy of the operation. The control parameters include the turbine inlet temperature and the rotational speed of the shaft. As a basis for the analysis, a steady-state performance model using realistic component descriptions has been constructed for the microturbine. The economy of the operation is determined by combining the performance model with the economy model developed for the engine. The economy model uses the net present value from investing in the microturbine as a criterion. As a result, the conditions for the cost-effective operation of the engine are determined. In addition to the analysis of general validity, the developed models are applied to a case with given profiles for heat and power demand. The size range with the highest economic potential is determined for the microturbine options. For the selected size, the maximum costs that can be allowed for the investment are determined. Apart from the microturbine specifications and case-specific heat and power demand, the results are strongly dependent on the economic parameters. The sensitivity of the results against the energy prices is presented.

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  • Kaikko, Juha & Backman, Jari, 2007. "Technical and economic performance analysis for a microturbine in combined heat and power generation," Energy, Elsevier, vol. 32(4), pages 378-387.
    • Handle: RePEc:eee:energy:v:32:y:2007:i:4:p:378-387
    DOI: 10.1016/j.energy.2006.06.013
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    3. Gabriele Loreti & Andrea Luigi Facci & Stefano Ubertini, 2021. "High-Efficiency Combined Heat and Power through a High-Temperature Polymer Electrolyte Membrane Fuel Cell and Gas Turbine Hybrid System," Sustainability, MDPI, vol. 13(22), pages 1-24, November.
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    9. Shamshiri, Mehdi & Ashrafizaadeh, Mahmud & Shirani, Ebrahim, 2012. "Effects of rarefaction, viscous dissipation and rotation mode on the first and second law analyses of rarefied gaseous slip flows confined between a rotating shaft and its concentric housing," Energy, Elsevier, vol. 37(1), pages 359-370.
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    12. Carpaneto, Enrico & Chicco, Gianfranco & Mancarella, Pierluigi & Russo, Angela, 2011. "Cogeneration planning under uncertainty. Part II: Decision theory-based assessment of planning alternatives," Applied Energy, Elsevier, vol. 88(4), pages 1075-1083, April.
    13. Stathopoulos, P. & Paschereit, C.O., 2015. "Retrofitting micro gas turbines for wet operation. A way to increase operational flexibility in distributed CHP plants," Applied Energy, Elsevier, vol. 154(C), pages 438-446.
    14. De Paepe, Ward & Delattin, Frank & Bram, Svend & De Ruyck, Jacques, 2013. "Water injection in a micro gas turbine – Assessment of the performance using a black box method," Applied Energy, Elsevier, vol. 112(C), pages 1291-1302.
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    16. Rachtan, W. & Malinowski, L., 2013. "An approximate expression for part-load performance of a microturbine combined heat and power system heat recovery unit," Energy, Elsevier, vol. 51(C), pages 146-153.
    17. Lin, Wei & Jin, Xiaolong & Mu, Yunfei & Jia, Hongjie & Xu, Xiandong & Yu, Xiaodan & Zhao, Bo, 2018. "A two-stage multi-objective scheduling method for integrated community energy system," Applied Energy, Elsevier, vol. 216(C), pages 428-441.
    18. Mancarella, Pierluigi & Chicco, Gianfranco, 2009. "Global and local emission impact assessment of distributed cogeneration systems with partial-load models," Applied Energy, Elsevier, vol. 86(10), pages 2096-2106, October.
    19. Caresana, Flavio & Brandoni, Caterina & Feliciotti, Petro & Bartolini, Carlo Maria, 2011. "Energy and economic analysis of an ICE-based variable speed-operated micro-cogenerator," Applied Energy, Elsevier, vol. 88(3), pages 659-671, March.
    20. Vítězslav Máša & Petr Bobák & Marek Vondra, 2017. "Potential of gas microturbines for integration in commercial laundries," Operational Research, Springer, vol. 17(3), pages 849-866, October.
    21. Konečná, Eva & Teng, Sin Yong & Máša, Vítězslav, 2020. "New insights into the potential of the gas microturbine in microgrids and industrial applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 134(C).
    22. Kornbluth, Kurt & Greenwood, Jason & Jordan, Eddie & McCaffrey, Zach & Erickson, Paul A., 2012. "Economic feasibility of hydrogen enrichment for reducing NOx emissions from landfill gas power generation alternatives: A comparison of the levelized cost of electricity with present strategies," Energy Policy, Elsevier, vol. 41(C), pages 333-339.
    23. Comodi, Gabriele & Cioccolanti, Luca & Polonara, Fabio & Brandoni, Caterina, 2012. "Local authorities in the context of energy and climate policy," Energy Policy, Elsevier, vol. 51(C), pages 737-748.
    24. Bracco, Stefano & Bianchi, Enrico & Bianco, Giovanni & Giacchino, Alessandro & Ramaglia, Alessandro & Delfino, Federico, 2022. "On the participation of small-scale high performance combined heat and power plants to the Italian ancillary services market within Virtually Aggregated Mixed Units," Energy, Elsevier, vol. 239(PE).
    25. Lontsi, Frederic & Hamandjoda, Oumarou & Fozao, Kennedy & Stouffs, Pascal & Nganhou, Jean, 2013. "Dynamic simulation of a small modified Joule cycle reciprocating Ericsson engine for micro-cogeneration systems," Energy, Elsevier, vol. 63(C), pages 309-316.

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