Optimization of Operating Modes of CHPPs as a Way to Reduce Greenhouse Gas Emissions

Abstract

The aim of the work is to analyze and evaluate the operating efficiency of CHPPs to develop an optimal operating strategy based on minimizing fuel consumption and greenhouse gas emissions. To achieve this goal, the following tasks were solved: a quantitative assessment of the most effective methods of operating units in typical operating modes was given; dependences of changes in the main energy and environmental parameters based on mathematical models of turbine units using real energy characteristics of turbine stages and compartments were constructed; long-term optimization method to exploitation operation of CHPРs to the point of view of reduc-ing greenhouse gas emissions was shown on specific examples. The most significant results are the following: a comprehensive methodology for applying mathematical models for solving the most typical problems for CHPP was used, both from the point of view of saving primary fuel and reducing carbon emissions; the dependences of the influence of operating parameters on the carbon footprint were calculated; it has been established that the specific consumption of equiv-alent fuel and the carbon footprint are reduced when the loads are redistributed between turbine units during the heating period; the advantages of two-stage heating of delivery water over single-stage heating and sequential loading of turbines of the same type over parallel loading have been determined. The significance of the results obtained lies in their applicability in solving problems of optimizing the operating modes of CHPPs, taking into account the determination of the values of reducing greenhouse gas emissions.

Keywords

• greenhouse gas emissions
• carbon footprint
• cogeneration
• district heating
• energy efficiency
• chpp
• operating measures.