How much do stack gases reduce stay times by?

Stack gases play a significant role in the operation and efficiency of gas turbine systems. When examining how much stack gases reduce stay times, it's important to consider the specific efficiencies and operational characteristics of the system.

The correct answer indicates that stack gases can reduce stay times by two-thirds. This reduction occurs because the presence of stack gases can affect the thermal dynamics and mixing patterns within the combustion system. As these gases move through the turbine, they influence the temperature and pressure conditions, which can lead to a more effective and rapid expulsion of combustion products from the turbine.

In practical terms, a two-thirds reduction in stay time implies that the gases are being expelled efficiently, reducing the amount of time that needs to be taken for the combustion products to exit the system. This efficient exit minimizes the potential for secondary reactions or heat loss that can lead to decreased overall efficiency in the turbine system.

Understanding the implications of this reduction is crucial for those operating and maintaining gas turbines, as it informs the development of operational protocols and maintenance schedules that maximize efficiency and safety within the gas turbine system.