Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
THEORETICAL STUDY OF A DIRECT STEAM GENERATION POWER PLANT WITH PARABOLIC TROUGH COLLECTORS
Submission Author:
João Marcos Gomes Vieira , MG , Brazil
Co-Authors:
João Marcos Gomes Vieira, Matheus Porto
Presenter: João Marcos Gomes Vieira
doi://10.26678/ABCM.ENCIT2018.CIT18-0150
Abstract
The Direct Steam Generation (DSG) is a Concentrated Solar Power (CSP) system that uses only water as the heat transfer fluid (HTF), instead of the two loops oil/molten salt topology used in almost all CSP plants. DSG works with different receiver technologies, being the most common solar towers, linear Fresnel receivers and Parabolic Trough Collectors (PTC). A still pending advance for DSG technology is the use of a Thermal Energy Storage (TES) to mitigate the intermittency of solar irradiance. Intermittency leads the steam generation and output power to vary along time. TES technology is applied in DSG systems in the form of steam accumulators, but experimental response of an operating TES was not found in the literature. In this sense, this work presents a simulation of a PTC power plant in order to size a TES composed of a steam accumulator and a hot water tank . After defining operational parameters as recirculation mass flow rate and design direct irradiation, two selected days were simulated, using measured solar data. The mathematical model simulated in Ebsilon attested that the integration of the hot water tank to the steam accumulator makes the pressure of the steam generated more constant over time.
Keywords
CSP, DSG, PTC., Simulation
