ASSESSMENT METHODS THERMODYNAMICS OF COGENERATION PLANTS

Autor/autori: Marcel DRAGAN, Krisztina UZUNEANU, Gelu COMAN p65-68

Abstract: Currently thermodynamic analysis of cogeneration power plants is poorly approached, the problem being determined by the calculation of the overall efficiency of these types of installations. Yield calculation based on application of the first thermodynamic principle leads to erroneous results, deviation from reality being greater with higher heating degree. Summing up the two categories of energy products (electricity and heat), ignoring the quality characteristics of the thermal energy delivered, inevitably leads to these results. The thermodynamic analysis method proposed by the authors, based on power quality (exergy), is presented as the only method of thermodynamic analysis of cogeneration installations, by identifying sources of irreversibility in the system, ans also specifying the scientific framework for an accurate assessment of the energy efficiency of this type of installations.

Keywords: Cogeneration, exergy method, power

DOWNLOAD PDF