THE EFFECT OF INTEGRATING SOLAR ENERGY ON THE RANKINE CYCLE IN THE COMBINED CYCLE POWER PLANT TO THE STEAM TURBINE OUTPUT USING A PARABOLIC TROUGH SOLAR COLLECTOR

Abstract

Solar energy is a source of energy that is clean, pollution-free and will never run out. The energy can be used to substitute the petroleum produced energy for different purposes. In this project, solar energy is integrated into a combined cycle power plant or commonly referred to as the Integrated Solar Combined Cycle (ISCC). In solar fields, parabolic troughs are used as solar collectors which stretch from north to south and move in the direction of the sun from east to west. In the process of integration, there are two technologies commonly used in the configuration of this power plant, Direct Steam Generator (DSG) and also Heat Transfer Fluid (HTF). What distinguishes these two configurations is the DSG system, the steam coming from the feed water pump is directly flowed into the solar field so there is no need for heat exchangers like those in HTF technology. By calculating the mass flow rate of water, it can be determined how much additional capacity of a steam turbine, and the efficiency of the plant. In this study, the results obtained where by using DSG technology, the capacity of a steam turbine has more than three times with same efficiency. Whereas in HTF technology, the capacity of a steam turbine is slightly lower than a DSG.