المجلة الدولية للعلوم والتقنية

The Combined Cycle Power Plants (CCPP) and gas power plant operating in hot climate conditions suffer from a decrease in energy production, and this negatively affects the efficiency of the plant, especially during the high temperature in the summer months, and the production of CCPP in the hot summer months is less by up to 20% compared to cold winter days. As a result, a gas turbine inlet air cooling technology have been developed over the years to increase plant efficiency. In the gas turbine cycle system, the exhaust gases of the are used to generate steam through a heat exchanger. Because mass flux decreases with increasing ambient temperature, the total power output of the combined cycle will decrease dramatically with increasing temperature. In this research, the efficiency improvement of Combined Cycle Power in Plant Zawia city (ZCCPP), Libya, will be studied by using a proposed absorption chiller system (AC) to cool the air entering the gas turbine, and the obtained theoretical results will be compared with the readings from power plant by using GTpro simulation software. By comparing the results obtained using an absorption chiller system (AC) with the results without using an absorption chiller system (AC), it was found that the energy produced by the gas turbine of the plant increases with the decrease in the air entry temperature of the gas turbine, thus increasing the efficiency of the power plant and thus the possibility of applying this the system on gas and combined power plants in Libya on a large area.