Performance evaluation for different configurated HRSGs

In this study, performances decreasing heat losses and plant costs are compared in different stage HRSG with inlet parameters of under construction power plant. Flue gas that occurred after combustion in gas turbine was in 1–3 stage HRSG, and thermal changings, produced energies, type of equipments, and effects to environment were calculated and compared when energy and exergy analyses are applied using ASPEN Plus simulation program. Result of these calculations and comparisons has reached optimum design criteria, and 3 stage HRSG is the most effective system. Additionally, exergy analysis behind energy analysis has showed that not only the amount of heat but also the quality of heat is calculated and played important role to choose suitable type of equipment. When using these results in another process, it might not be fixed with it but used method and calculations give the optimum conditions. In conclusion, energy production in combined cycle power plant will be more effective and sensitive for environment with specified and evaluated heat recovery systems. © Springer International Publishing Switzerland 2014