5484
Abdullah Mohamed Ali Shaaban
Energy Management Of Multi Purposes Concentrated Solar Power System
Energy Management , Renewable energy , concentrating solar ,thermal enargy storaye, organic rankine cycle, thermal adsorptim chile
The global electrical energy consumption is still rising and there is a steady demand to increase the power capacity. Renewable energy is one of the major inputs for the economic, environmental and social development of any country. Both photovoltaic (PV) and concentrating solar power (CSP) technologies now constitute feasible commercial options for large scale power plants as well as for smaller electricity and heat generating devices. The present work aims to manage the thermal energy stored from CSP research plant, in order to obtain the best operating condition of CSP system. This plant is considered standalone system. In case of grid connection, grid tied inverter is used to connect the plant to the national grid. The investigated plant consists of solar collector field of 120 kW peak thermal capacity, thermal storage tank with 3 tons of therminol-66 oil, an organic rankine cycle (ORC) of 8 kW nominal electric power production capacity, and thermally driven absorption chiller (TDC) of 35 kW cooling capacity. The system was modeled mathematically then calculated using engineering equation solver (EES) software program in order to analyze the performance at similar conditions to the real ones to ensure the feasibility of the presented study. The present simulation model is verified by using data of another study and the output results are compared. From this comparison between the present work and the other study for the output net power versus exhaust mass flow rate work, it is clear that, the two curves have the same trend with some acceptable deviations. The output results were analyzed. Effect of hot oil temperature and mass flow rate on ORC output and efficiency are investigated. Also effect of generator and evaporator temperatures on TDC cooling capacity and coefficient of performance are obtained. Both ORC net output power and TDC cooling capacity increase with the increase of the input thermal power. When ORC exit hot oil temperature is constant, the ORC output electric power and inlet thermal power increase with the increase of the inlet hot oil temperature. When applying different working fluids, the same linearity was found but at higher electric output power.
2018
M.Sc
Helwan
Engineering