Banca de QUALIFICAÇÃO: JOSÉ LOPES DA SILVA JUNIOR

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : JOSÉ LOPES DA SILVA JUNIOR
DATA : 06/03/2019
HORA: 09:00
LOCAL: Sala 414 CTEC
TÍTULO:

THERMO-HYDRAULIC ANALYSIS IN RLF'S TRANSIENT REGIME

PALAVRAS-CHAVES:

RLF, Transient Analysis, Thermohydraulics, Solar Energy

PÁGINAS: 75
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Mecânica
SUBÁREA: Fenômenos de Transporte
RESUMO:

The Fresnel Linear Reflector (RLF) system is a concentrated solar energy technology promising, which concentrates the irradiation coming from the Sun in a single point. In the system RLF, a set of mirrors arranged in straight rows reflects sunlight, concentrating it in a stationary pickup device consisting of one or more tubes within In a cavity, the fluid flowing into the absorber tubes increases temperature due to the received energy flow. The objective in this work is to perform a Fresnel concentrator thermal-hydraulic analysis. Initially it was performed a study of the heat loss in the cavity and an analysis of the convective flow in the tubes in permanent regime, developing the equation and simulating several parameters of the RLF system with the aid of computational tools for differential equations, thermal balance result. An analysis was then carried out in the system using the Monte Carlo method for ray tracing. Finally, it will be performed the analysis of the daily performance of the system, in a transient regime, for different days of the year in the climatic conditions of Rio Grande do Norte, and the sensitivity of some parameters of the system, including thermal and exergetic efficiency, variations of Direct Normal Radiation (DNI) throughout the day. The results obtained in the simulations will be compared to experimental data obtained from a prototype of the system object of the simulations that is set up at the Federal University of Santa Catarina - UFSC. In simulations of heat loss values were found that were consistent with the data for forced convection with 2.9 m / s of air velocity. In the analysis of the convective flow it was possible to understand the behavior of the working fluid to different irradiation incidence conditions and their implications

MEMBROS DA BANCA:
Presidente - 2550377 - THERCIO HENRIQUE DE CARVALHO COSTA
Externo ao Programa - 2524058 - DOUGLAS DO NASCIMENTO SILVA
Externo ao Programa - 1770049 - GABRIEL IVAN MEDINA TAPIA
Externo ao Programa - 2654020 - KLEIBER LIMA DE BESSA