In this paper, an optimization-oriented model of a hybrid
solar power plant is proposed. The facility is composed of a
parabolic trough solar field, a packed bed thermal storage,
a fired heater and a supercritical ORC power block.
In a first step, all the components of the power plant
are sized. In a second step, its operation is simulated over
a typical year using irradiance data as input which allows
to assess the Levelized Cost of Electricity (LCOE) and the
amount of CO2 emitted per kWh produced.
A new analytical model developed by the authors is used
to simulate the operation of the heat storage and permits to
reduce considerably the computation time. Therefore, the
model is suitable to be integrated in stochastic optimization
Finally, the effects of the solar field size and the storage
tank on the LCOE and CO2 emission are investigated and
it has been found that the shape factor of the packed bed
storage (the ratio between the hight and the diameter) is
a very important parameter that affects the impact of the
storage integration on the LCOE and CO2 emission levels.
Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016.