Exergy based performance analysis of high efficiency poly-generation systems for sustainable building applications

Date

2011-11-01

Author

Bingol, Ekin
Kilkis, Birol
Eralp, Cahit

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In this study, first and second laws of thermodynamics, accompanying with Rational Exergy Management Method (REMM) were employed in developing a MATLAB based algorithm for natural gas fired, internal combustion engine (ICE) driven poly-generation systems. Two systems were studied based on a tri-generation plant built within the framework of the EU-FP6 HEGEL Project, tested at METU MATPUM (RICBED) building. This study introduces a better set of metrics for rating, evaluating, and optimizing poly-generation systems in order to minimize emissions, maximize fuel savings, and thus to accomplish an optimum sustainability metric among the factors of environment, energy, human needs and economics. Results show that with ICE poly-generation systems, exergy efficiency may increase beyond 60%. Even at part loads, minimum values of Primary energy savings (PES) are 12.4% for Case-1 and 17.7% for Case-2 (compared to minimum allowed 10%). REMM efficiency and Exergy Embedded PES (PES(R)) evaluated by REMM are proven to be better indicators of the performance. When exergy destruction is lower, (waste heat is recovered) PES(R) increases significantly. PES(R) values are minimum 18.2% for Case-1 and 42.4% for Case-2, which reveals that both systems provide high performance energy generation and considerably lower emissions.

Subject Keywords

Mechanical Engineering, Electrical and Electronic Engineering, Civil and Structural Engineering, Building and Construction, Co-generation, Poly-generation, Combined heat and power, Energy analysis, Exergy analysis, Rational exergy management model, Internal combustion engine, Building applications

URI

https://hdl.handle.net/11511/66723

Journal

ENERGY AND BUILDINGS

DOI

https://doi.org/10.1016/j.enbuild.2011.07.029

Collections

Department of Mechanical Engineering, Article

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Citation Formats

E. Bingol, B. Kilkis, and C. Eralp, “Exergy based performance analysis of high efficiency poly-generation systems for sustainable building applications,” ENERGY AND BUILDINGS, pp. 3074–3081, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66723.