Abstract:
The purpose of this study is to develop a mathematical program for analysing the performance of
the first integrated solar combined cycle system (ISCCS) in Algeria, located in Hassi R’mel. In
this project, an integrated plant with simple pressure level is proposed. During sunny periods, the
energy conversion of the exhaust gas in the steam turbine is improved by using solar heat steam
generator HSSG in parallel with the heat recovery steam generator HRSG. This design furnishes
flexibility in the operation system where it works as a conventional combined cycle during night
time and it switches to operate as an ISCCS during daylight. Thermal efficiency and electricity
generating are the main parameters to evaluate the instantaneous performances of different parts
of the solar power plant through the year. The program results show that the power plant would
produce about 134MW with efficiency equal to 57.5% at night. At daytime, the net solar
electricity ratio can be very interesting and reach the limit of 15% at the design point. As a result,
the output from and the efficiency of the integrated plant will be above the CC regime by 17 and
16.5%, which correspond to 157MW and 67%, respectively. Increasing the steam turbine
capacity by 50% and better performances of the integrated plant in Hassi R’mel desert in warm
days are other advantages of the proposed design
