Assessment of the effect of humidity of air-cooled in the absorption refrigeration machine on the operation of an energy gas turbine

Abstract

Due to the fact that the construction of combined cycle plants has become the main trend in the development of the world heat power industry in the last two decades studies of the operating modes and operation of such equipment are very relevant at the moment. The aim of this work is to study the effect of chilled air in an absorption refrigeration machine on the operation of a stationary gas turbine installation. The operation of a gas turbine installation is affected by the temperature of the surrounding air due to changes in its density and humidity at different temperatures and because of the different useful work of the gas turbine. The standard adopted in the design of gas turbines is 15 °C. An increase in ambient temperature leads to a decrease in the generated power of the gas turbine. The influence of gas turbine power from ambient air can be reduced by means of cooling units for incoming air (absorption refrigeration machine (ARM)), or by modernizing the gas flow part of gas turbines and injecting water or carbon dioxide. This study is devoted to the influence of humidity of air entering the gas turbine compressor from the ARM, where it was previously cooled. It was noted that air humidity affects the efficiency of the ARM and therefore the useful power of gas turbines. The power of a gas turbine can be increased to 7-9 MW when using the ARM.