Power Increase of Gas Turbines by Inlet Air Pre-Cooling with Absorption Refrigeration Utilizing Exhaust Waste Heat

Abstract

Using heat energy from the tail-end of gas turbine exhaust, an ammonia absorption refrigeration system can precool the inlet air to a temperature slightly above the freezing point of the air humidity. The concept is described and shows how it indicates a significant increase of gas turbine power output, depending on ambient conditions.