Which method is used to reduce inlet air temperatures for gas turbines?

The method that is commonly used to reduce inlet air temperatures for gas turbines is spray cooling. This technique involves the introduction of water or other cooling fluids into the air intake stream of the turbine. When the spray reaches the incoming air, it evaporates, absorbing heat and thereby lowering the air temperature before it enters the turbine. Cooler air is denser, which increases the mass flow rate and subsequently improves the efficiency and power output of the gas turbine.

Using spray cooling not only helps in enhancing the performance of the turbine but also assists in managing the thermal stresses and maintaining optimal operating conditions. The effectiveness of spray cooling can be particularly beneficial in warm climates or during peak loading periods when the ambient temperatures are high.